Welcome to the The Garage Journal Board forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   The Garage Journal Board > The Garage > Free Parking

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-13-2011, 02:06 PM   #1
scott37300
Senior Member
 
Join Date: May 2010
Location: Wisconsin
Posts: 3,451
Default What cars have interference engines?

What are some cars that have interference engines? Just curious if they are common in one brand or if it's a hit and miss type thing? Also what precautions do you have to take when working on one?
scott37300 is offline   Reply With Quote
Old 06-13-2011, 02:07 PM   #2
SpiderGearsMan
Banned
 
Join Date: Jul 2007
Location: Now Leaving , NJ
Posts: 12,076
Default Re: What cars have interference engines?

everything but toyota
SpiderGearsMan is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 06-13-2011, 02:09 PM   #3
VWandDodge
Senior Member
 
Join Date: May 2011
Posts: 951
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
everything but toyota

Sorry, but that is incorrect.

http://www.aa1car.com/library/timing...ce_engines.htm
VWandDodge is offline   Reply With Quote
Old 06-13-2011, 02:10 PM   #4
Zrexxer
Senior Member
 
Zrexxer's Avatar
 
Join Date: Jan 2007
Location: Austin, TX
Posts: 3,819
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
everything but toyota
Wrong. Toyota 22R is most definitely interference.
__________________
"As if you could kill time without injuring eternity..."
Zrexxer is offline   Reply With Quote
Old 06-13-2011, 02:11 PM   #5
SpiderGearsMan
Banned
 
Join Date: Jul 2007
Location: Now Leaving , NJ
Posts: 12,076
Default Re: What cars have interference engines?

That is a chain
SpiderGearsMan is offline   Reply With Quote
Old 06-13-2011, 02:11 PM   #6
George in Rancho Cordova
Senior Member
 
Join Date: Mar 2011
Posts: 380
Default Re: What cars have interference engines?

Here is a link to a list of engines, credited to the Automotive Engine Rebuilding Association.

http://www.aa1car.com/library/timing...ce_engines.htm
George in Rancho Cordova is offline   Reply With Quote
Old 06-13-2011, 02:15 PM   #7
Zrexxer
Senior Member
 
Zrexxer's Avatar
 
Join Date: Jan 2007
Location: Austin, TX
Posts: 3,819
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
That is a chain
I don't care if it's a rope. If the pistons hit the valves when whatever is connecting the camshaft to the crankshaft breaks, THAT is an interference engine.
__________________
"As if you could kill time without injuring eternity..."

Last edited by Zrexxer; 06-13-2011 at 02:22 PM.
Zrexxer is offline   Reply With Quote
Old 06-13-2011, 02:20 PM   #8
ratdoggy
Senior Member
 
ratdoggy's Avatar
 
Join Date: Mar 2009
Location: Akron-Canton area OH
Posts: 3,923
Default Re: What cars have interference engines?

Quote:
Originally Posted by Zrexxer View Post
I don't care if it's a rope. When whatever is connecting the camshaft to the crankshaft breaks, the pistons hit the valves. THAT is an interference engine.
Old Ford 2.3 Pinto engines were non interference
ratdoggy is offline   Reply With Quote
Old 06-13-2011, 02:26 PM   #9
Jack Olsen
Super Moderator
 
Jack Olsen's Avatar
 
Join Date: Mar 2009
Location: Los Angeles
Posts: 5,898
Default Re: What cars have interference engines?

The 911 flat six is an interference engine.
Jack Olsen is offline   Reply With Quote
Old 06-13-2011, 02:30 PM   #10
bart1
Senior Member
 
bart1's Avatar
 
Join Date: Dec 2010
Location: Alabama the Beautiful
Posts: 1,509
Default Re: What cars have interference engines?

Quote:
Originally Posted by Jack Olsen View Post
The 911 flat six is an interference engine.
As is the 944 and 968 4 pot. I looked for a picture I have from my old 944 that aptly demonstrates it
bart1 is online now   Reply With Quote
Old 06-13-2011, 02:38 PM   #11
scott37300
Senior Member
 
Join Date: May 2010
Location: Wisconsin
Posts: 3,451
Default Re: What cars have interference engines?

Quote:
Originally Posted by George in Rancho Cordova View Post
Here is a link to a list of engines, credited to the Automotive Engine Rebuilding Association.

http://www.aa1car.com/library/timing...ce_engines.htm
That's a neat list but it doesn't have anything in the 2000+ years, is it just out of date or are no newer cars interference?
scott37300 is offline   Reply With Quote
Old 06-13-2011, 02:42 PM   #12
Stuart in MN
Senior Member
 
Stuart in MN's Avatar
 
Join Date: Sep 2005
Location: Minneapolis
Posts: 8,110
Default Re: What cars have interference engines?

It took about 30 seconds to find this:
http://www.gates.com/part_locator/in...o=Interference
Stuart in MN is offline   Reply With Quote
Old 06-13-2011, 02:46 PM   #13
Freeborn John
Senior Member
 
Freeborn John's Avatar
 
Join Date: Jul 2010
Location: Great Britain
Posts: 198
Default Re: What cars have interference engines?

This is an interesting subject, every engine I've ever heard of breaking a belt/chain has at least kissed a valve, I was under the impression that interference valve gear had been almost universal for many years.
We live and learn.
Freeborn John is offline   Reply With Quote
Old 06-13-2011, 03:05 PM   #14
porphyre
Banned
 
Join Date: Sep 2009
Posts: 1,328
Default Re: What cars have interference engines?

Quote:
Originally Posted by Stuart in MN View Post
It took about 30 seconds to find this:
http://www.gates.com/part_locator/in...o=Interference
That's a belt manufacturer's website, therefore chain driven motors are not listed (as far as interference goes).

I do not know if there are non-interference motors with timing chains, though. Does a chain always mean interference?
porphyre is offline   Reply With Quote
Old 06-13-2011, 03:26 PM   #15
Scotto
Senior Member
 
Join Date: Apr 2008
Location: South Jersey
Posts: 720
Default Re: What cars have interference engines?

Quote:
Originally Posted by VWandDodge View Post
That info is like 15 yrs out-dated
Scotto is offline   Reply With Quote
Old 06-13-2011, 03:42 PM   #16
Stuart in MN
Senior Member
 
Stuart in MN's Avatar
 
Join Date: Sep 2005
Location: Minneapolis
Posts: 8,110
Default Re: What cars have interference engines?

Quote:
Originally Posted by porphyre View Post
I do not know if there are non-interference motors with timing chains, though. Does a chain always mean interference?
Not necessarily.

Unless you need a full list of every engine, it's probably simpler to just google on the particular engine you're working on at the moment.
Stuart in MN is offline   Reply With Quote
Old 06-13-2011, 03:42 PM   #17
tonydanzah
Senior Member
 
tonydanzah's Avatar
 
Join Date: Nov 2009
Location: the champagne of people
Posts: 5,026
Default Re: What cars have interference engines?

Quote:
Originally Posted by scott37300 View Post
What are some cars that have interference engines? Just curious if they are common in one brand or if it's a hit and miss type thing? Also what precautions do you have to take when working on one?
with modern cars it should more be like what is not a interference engine
__________________
Cheap,fast,reliable. You can chose only 2. Rip Ryan Dunn
http://www.usenglish.org/
tonydanzah is offline   Reply With Quote
Old 06-13-2011, 03:48 PM   #18
SpiderGearsMan
Banned
 
Join Date: Jul 2007
Location: Now Leaving , NJ
Posts: 12,076
Default Re: What cars have interference engines?

944 is a volkswagen
SpiderGearsMan is offline   Reply With Quote
Old 06-13-2011, 03:55 PM   #19
scott37300
Senior Member
 
Join Date: May 2010
Location: Wisconsin
Posts: 3,451
Default Re: What cars have interference engines?

Quote:
Originally Posted by tonydanzah View Post
with modern cars it should more be like what is not a interference engine
So it's "fairly" safe to say most newer cars are interference engines?
scott37300 is offline   Reply With Quote
Old 06-13-2011, 03:59 PM   #20
bart1
Senior Member
 
bart1's Avatar
 
Join Date: Dec 2010
Location: Alabama the Beautiful
Posts: 1,509
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
944 is a volkswagen
So is a Veyron... Your point?
bart1 is online now   Reply With Quote
Old 06-13-2011, 05:15 PM   #21
HookWorse
Senior Member
 
HookWorse's Avatar
 
Join Date: Dec 2010
Location: Iowa
Posts: 490
Send a message via Yahoo to HookWorse
Default Re: What cars have interference engines?

As far as Toyota goes, everything with a belt is non-interference. Everything with a chain should be considered interference. At least they had the insight to build the belt driven ones with clearance.

Most other import ones belt driven are interference, and also the Chevy Aveo.
__________________
"If I wanted smoke blown up my ass, I'd be at home with a pack of cigarettes and a short length of hose."
HookWorse is offline   Reply With Quote
Old 06-13-2011, 06:09 PM   #22
wafrederick
Senior Member
 
Join Date: Jul 2010
Location: Holton,Mi
Posts: 4,303
Default Re: What cars have interference engines?

The Chrysler 2.7s are interferance engines,timing chain breaks and bends all of the valves.Some say the 2.4 too and I never seen one do this yet.The engine in the Chevy Aveos are and GM says to replace the timing belt on these every 60,000 miles.Done one of these so far and bent a couple valves,the idler pulley broke instead of the timing belt.The 2.4 quad 4 is too when it jumps time and seen this happen.The Subarus are too,don't hit the piston when the valves bend.The valves clash with each other when they bend.
wafrederick is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 06-13-2011, 07:12 PM   #23
jayoldschool
Senior Member
 
Join Date: Apr 2006
Location: Canada
Posts: 1,199
Default Re: What cars have interference engines?

VW/Audi 1.8Ts are interference! Five valves per cylinders equals lots to fix.
jayoldschool is offline   Reply With Quote
Old 06-14-2011, 04:46 AM   #24
illmatyk
Senior Member
 
Join Date: Sep 2009
Location: Yigo, Guam
Posts: 757
Default Re: What cars have interference engines?

Quote:
Originally Posted by HookWorse View Post
As far as Toyota goes, everything with a belt is non-interference. Everything with a chain should be considered interference. At least they had the insight to build the belt driven ones with clearance.

Most other import ones belt driven are interference, and also the Chevy Aveo.
Lexus GX470's are interference motors. IIRC, the V8 Special Edition 4Runners use the same motor as well as the LX470's....
__________________
NOTE!!! USPS classifies Guam as domestic with the rest of the USA as far as shipping rates go.


My feedback thread:
http://www.garagejournal.com/forum/s...d.php?t=133098


If I have made a transaction with you, please feel free to leave some feedback.
illmatyk is offline   Reply With Quote
Old 06-14-2011, 05:08 AM   #25
Garage5.9
Senior Member
 
Garage5.9's Avatar
 
Join Date: Jan 2011
Location: Maui,Hawaii
Posts: 2,155
Default Re: What cars have interference engines?

anything nissan
Garage5.9 is offline   Reply With Quote
Old 06-14-2011, 05:13 AM   #26
nissan_crawler
Senior Member
 
nissan_crawler's Avatar
 
Join Date: Jan 2008
Location: Wichita, KS
Posts: 9,638
Default Re: What cars have interference engines?

Is it really worth worrying about? Yes, I know it's happened, but how often does a *properly maintained* car toss a belt and munch the valves?

I know people that think belts are horrible, and always break. Well, usually only when you don't change them.

All things being equal I would prefer a chain, but I'm not going to worry about an interference engine with a timing belt.

I'm not sure I'm keen on the pickup having 4 timing chains, either.
__________________
If guns cause crime, all mine are defective. Ted Nugent

"A man with a gun is a citizen. A man without a gun is a subject. " John Lott

"Taking my gun away because I might shoot someone is like cutting my tongue out because I might yell `Fire!' in a crowded theater." Peter Venetoklis
nissan_crawler is offline   Reply With Quote
Old 06-14-2011, 05:30 AM   #27
aussiek2000
Senior Member
 
aussiek2000's Avatar
 
Join Date: Dec 2010
Posts: 3,290
Default Re: What cars have interference engines?

Hyundai 4-cylinders are interference.
aussiek2000 is offline   Reply With Quote
Old 06-14-2011, 08:53 AM   #28
Joelfke
Senior Member
 
Joelfke's Avatar
 
Join Date: Mar 2009
Location: Monroe Township, NJ
Posts: 1,757
Send a message via AIM to Joelfke Send a message via Yahoo to Joelfke
Default Re: What cars have interference engines?

Quote:
Originally Posted by aussiek2000 View Post
Hyundai 4-cylinders are interference.
Hyundai anything is interference....Ive personally seen 1 of each motor they produce blown up because of timing belt failure. the newer ones have chains but theyre still interference
__________________
"The bolt doesn't really care who made your wrench, its going to be a stubborn prick reguardless"

Quote:
Originally Posted by Merkava_4 View Post
Sears = [fill in the blank] problem. :lol:
Joelfke is offline   Reply With Quote
Old 06-14-2011, 09:28 AM   #29
lomonte
Senior Member
 
Join Date: Jan 2006
Location: Independence, Mo
Posts: 489
Default Re: What cars have interference engines?

Did a TON of the 1st gen Escorts back in the day. 4-5 a week through the machine shop. 2nd gen non interfer.
lomonte is offline   Reply With Quote
Old 06-14-2011, 06:49 PM   #30
Daniel Dudley
Senior Member
 
Join Date: Sep 2009
Posts: 1,973
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
944 is a volkswagen
944 is an all Porsche engine and transmission. 924 is Audi engine and transmission. The chassis was designed by Porsche.
Daniel Dudley is offline   Reply With Quote
Old 06-14-2011, 06:52 PM   #31
gabeancounter
Senior Member
 
gabeancounter's Avatar
 
Join Date: Jan 2010
Location: east bumble
Posts: 848
Default Re: What cars have interference engines?

2006 tundra
4.7
gabeancounter is offline   Reply With Quote
Old 06-14-2011, 07:08 PM   #32
SpiderGearsMan
Banned
 
Join Date: Jul 2007
Location: Now Leaving , NJ
Posts: 12,076
Default Re: What cars have interference engines?

the 3.6 gm timing chain stretches like a timing belt
SpiderGearsMan is offline   Reply With Quote
Old 06-14-2011, 07:37 PM   #33
Garage5.9
Senior Member
 
Garage5.9's Avatar
 
Join Date: Jan 2011
Location: Maui,Hawaii
Posts: 2,155
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
the 3.6 gm timing chain stretches like a timing belt
Not suppersied
Garage5.9 is offline   Reply With Quote
Old 06-14-2011, 07:51 PM   #34
Morrisman
Senior Member
 
Join Date: Nov 2006
Location: Angeles City, Philippines
Posts: 404
Default Re: What cars have interference engines?

Quote:
Originally Posted by Freeborn John View Post
This is an interesting subject, every engine I've ever heard of breaking a belt/chain has at least kissed a valve, I was under the impression that interference valve gear had been almost universal for many years.
We live and learn.
A buddy of mine broke the timing chain on his 350 motored Camaro, in slow traffic. Never touched a valve, which surprised everybody we know.
Morrisman is offline   Reply With Quote
Old 06-14-2011, 08:48 PM   #35
N8
Senior Member
 
N8's Avatar
 
Join Date: Dec 2006
Location: In a house
Posts: 314
Default Re: What cars have interference engines?

Quote:
Originally Posted by jayoldschool View Post
VW/Audi 1.8Ts are interference! Five valves per cylinders equals lots to fix.
Experience speaking Jay? I am about to rip into a 2003 1.8T Jetta with reported timing belt breaking issues. Timing belt is intact, so it may have just sheared some teeth and skipped.
__________________
Self Made.

Complacency kills.

Respect is earned.

B and B Speed and Custom

The Compound

Mega Garages - Social Group

GJ Industrial Designers Social Group
N8 is offline   Reply With Quote
Old 06-15-2011, 02:02 PM   #36
mikeesracing
Senior Member
 
mikeesracing's Avatar
 
Join Date: Jul 2009
Location: Kuwait
Posts: 315
Default Re: What cars have interference engines?

When I was a kid my Dad had a Fiat 131s Miafiori. It had duel overhead cams with a Hemi style head, twin carbs and a duel point ignition.

I ran the crap out of the car racing anything I thought I could beat. Well the timing belt finally let go and took about half the valves with it. It really wasn't a very good car and I didn't help at all but my dad and I were always working on it.

And yes my Dad's name was Tony!
mikeesracing is offline   Reply With Quote
Old 06-15-2011, 02:59 PM   #37
weegaz22
Senior Member
 
weegaz22's Avatar
 
Join Date: Feb 2008
Location: Glasgow Scotland
Posts: 836
Default Re: What cars have interference engines?

Ford Zetec engines arent non interference....i know from experience, as i bent all 16 valves.

whether an engine is interference or non interference depends solely on that engine design, it isnt a manufacturer thing. if you want to know for a specific engine the info is out there
weegaz22 is offline   Reply With Quote
Old 06-15-2011, 03:04 PM   #38
Joelfke
Senior Member
 
Joelfke's Avatar
 
Join Date: Mar 2009
Location: Monroe Township, NJ
Posts: 1,757
Send a message via AIM to Joelfke Send a message via Yahoo to Joelfke
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
the 3.6 gm timing chain stretches like a timing belt
yup....what pieces of SH!T those things are....everything on that thing is a PITA to fix
__________________
"The bolt doesn't really care who made your wrench, its going to be a stubborn prick reguardless"

Quote:
Originally Posted by Merkava_4 View Post
Sears = [fill in the blank] problem. :lol:
Joelfke is offline   Reply With Quote
Old 09-07-2012, 03:48 PM   #39
heamicdan
Junior Member
 
Join Date: Sep 2012
Posts: 2
Default Re: What cars have interference engines?

my 2001 forester had a 2.5 interference tension pully on ac broke and belt locked up fan-----new motor -----my kids 2.4 mitsubishi ran great she pulled in parked and next day it would not start ---timing belt is missing some teeth think motor is shot?
heamicdan is offline   Reply With Quote
Old 09-07-2012, 07:14 PM   #40
egnorant
Senior Member
 
egnorant's Avatar
 
Join Date: May 2012
Location: East Texas
Posts: 770
Default Re: What cars have interference engines?

Quote:
Originally Posted by lomonte View Post
Did a TON of the 1st gen Escorts back in the day. 4-5 a week through the machine shop. 2nd gen non interfer.
Unless you got the GT! 1.6 and 1.9 Mazda/Ford/Mercury engines of the 90s were interference.

On my 91 Escort I have broken the belt three times! Second time was 12,000 miles after installation.

Bruce
__________________
1969 Mustang convertible
1991 Capri XR2
1991 Escort
Certified tool junkie!

My garage resurrection
http://www.garagejournal.com/forum/s...d.php?t=154033

-... .- -. --. .... .. ... .-- .. ..-. .
egnorant is offline   Reply With Quote
Old 09-07-2012, 07:28 PM   #41
wmartin
Senior Member
 
wmartin's Avatar
 
Join Date: Jun 2011
Posts: 1,452
Default Re: What cars have interference engines?

Quote:
Originally Posted by George in Rancho Cordova View Post
Here is a link to a list of engines, credited to the Automotive Engine Rebuilding Association.

http://www.aa1car.com/library/timing...ce_engines.htm
Aren't N/A 10v I5 Audis non-interference?
wmartin is offline   Reply With Quote
Old 09-07-2012, 08:05 PM   #42
Charles (in GA)
Senior Member
 
Charles (in GA)'s Avatar
 
Join Date: Jan 2006
Location: 50 mi south of Atlanta
Posts: 10,621
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
944 is a volkswagen
Quote:
Originally Posted by bart1 View Post
So is a Veyron... Your point?
He is just building up his post count.

Charles
Charles (in GA) is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 09-07-2012, 08:10 PM   #43
Skin
Senior Member
 
Join Date: Feb 2010
Location: Boston
Posts: 6,243
Default Re: What cars have interference engines?

Quote:
Originally Posted by nissan_crawler View Post
Is it really worth worrying about? Yes, I know it's happened, but how often does a *properly maintained* car toss a belt and munch the valves?

I know people that think belts are horrible, and always break. Well, usually only when you don't change them.

All things being equal I would prefer a chain, but I'm not going to worry about an interference engine with a timing belt.

I'm not sure I'm keen on the pickup having 4 timing chains, either.
Doesnt matter if its a chain or a belt if your tensioners are junk. Theres been a few brands running chains that have had issues with tensioners going around 75-100k. I think the most recent one that comes to mind is Nissan V6s.

Last edited by Skin; 09-07-2012 at 08:14 PM.
Skin is offline   Reply With Quote
Old 09-07-2012, 08:20 PM   #44
tcianci
Senior Member
 
tcianci's Avatar
 
Join Date: Feb 2009
Location: Walpole, Ma
Posts: 3,009
Send a message via AIM to tcianci
Default Re: What cars have interference engines?

I just got a 2000 Ford ranger for free because the timing belt went and the mechanic at the garage where the truck was towed told the owner that it was an interference engine and it was toast and wasn't worth fixing. I got the truck for free and 60 bucks worth of timing belt and tensioner later, it was running fine. I ended up doing a lot of general maintenance and repair on that truck but the engine needed very little work. This truck has a 2.5L inline 4
__________________
People are doing either what they THINK is right or what they KNOW is wrong.
tcianci is offline   Reply With Quote
Old 09-07-2012, 08:21 PM   #45
Joelfke
Senior Member
 
Joelfke's Avatar
 
Join Date: Mar 2009
Location: Monroe Township, NJ
Posts: 1,757
Send a message via AIM to Joelfke Send a message via Yahoo to Joelfke
Default Re: What cars have interference engines?

Quote:
Originally Posted by SpiderGearsMan View Post
the 3.6 gm timing chain stretches like a timing belt
with as often as I change them out it might as well have a belt...or 3
__________________
"The bolt doesn't really care who made your wrench, its going to be a stubborn prick reguardless"

Quote:
Originally Posted by Merkava_4 View Post
Sears = [fill in the blank] problem. :lol:
Joelfke is offline   Reply With Quote
Old 09-07-2012, 08:45 PM   #46
cmandp
Senior Member
 
cmandp's Avatar
 
Join Date: Dec 2011
Location: New Jersey
Posts: 296
Default Re: What cars have interference engines?

Rubber timing belts... worst "innovation" ever...
cmandp is offline   Reply With Quote
Old 09-08-2012, 08:04 AM   #47
cowboy73
Senior Member
 
cowboy73's Avatar
 
Join Date: Feb 2010
Location: southern Indiana
Posts: 1,531
Default Re: What cars have interference engines?

GM/Saturn 2.2L Ecotech are interference engines. Blew one up recently in 2004 Cavalier.
cowboy73 is offline   Reply With Quote
Old 09-08-2012, 09:34 AM   #48
heamicdan
Junior Member
 
Join Date: Sep 2012
Posts: 2
Default Re: What cars have interference engines?

too many people don't know what an interference is
i learned when my ac tensioner pully broke and belt wrapped around fan and locked up motor-- 20.00 part cost me 3 grand--- also there are way too many people these days who can't afford to spend 3-500.00 to get them changed.
i am going to be learning to do timing next belt next week---i am sure i could do it but i wanna do it fast and right
also if a car was pulled in and parked running very well then went to start it and found out timing belt shit---what are chances of motor being safe if she was not driving---its is my kids 2002 galant---

Last edited by heamicdan; 09-08-2012 at 09:40 AM. Reason: adding
heamicdan is offline   Reply With Quote
Old 09-08-2012, 09:48 AM   #49
wmartin
Senior Member
 
wmartin's Avatar
 
Join Date: Jun 2011
Posts: 1,452
Default Re: What cars have interference engines?

Quote:
Originally Posted by cmandp View Post
Rubber timing belts... worst "innovation" ever...
I always thought that overhead cams in V8's were the worst.

I suppose that you buy quietness and lack of stretching in belts, although I imagine that the main advantage is cost of manufacture and flexibility in placement of engine internals.
wmartin is offline   Reply With Quote
Old 09-08-2012, 11:16 AM   #50
TwoInch
Senior Member
 
TwoInch's Avatar
 
Join Date: Mar 2012
Location: NW INDIANA
Posts: 2,598
Default Re: What cars have interference engines?

Quote:
Originally Posted by heamicdan View Post
also if a car was pulled in and parked running very well then went to start it and found out timing belt shit---what are chances of motor being safe if she was not driving---its is my kids 2002 galant---
not sure that engine in particular, but usually, if it broke when the engine was running, your in trouble. doesnt matter if it was moving down a road or idling in the driveway, piston smacks the valves, there will be trouble to deal with.
__________________
[B]LOOKING FOR -

Craftsman Professional 11mm and 19mm combos, Danaher USA style.

JH Williams - M-52 1/4" ratchet.
TwoInch is offline   Reply With Quote
Old 09-08-2012, 11:41 AM   #51
Link-Belt
Senior Member
 
Link-Belt's Avatar
 
Join Date: May 2012
Location: Arlington Texas
Posts: 507
Default

Not sure that it matters here but I would think the salution here is simple enough. You guys are talking belts and chains, how about gear drives. Yes I understand gear drives are mostly a performance upgrade but really how much of a gear drive is performance over reliability? Harder to jump time on a gear drive unless maybe it breaks a tooth and I can only see the broken tooth scenario in a high performance application.

Sent from my SCH-R720 using Tapatalk 2
Link-Belt is offline   Reply With Quote
Old 09-08-2012, 02:07 PM   #52
TangoFoxTrot
Senior Member
 
TangoFoxTrot's Avatar
 
Join Date: Jan 2009
Posts: 896
Default Re: What cars have interference engines?

I have a crazy "conspiracy" theory that dealerships push manufacturers to make vehicles with timing belts and interference engines because it's so lucrative for their service departments.

Dealerships will push it WELL before the actual time to replace, and many times get the water pump replaced as well. They also can say with a straight face that if the service isn't done, it will destroy the motor. It's very easy to scare the consumer into getting it done, and it's a thousand dollar service that the same car with a chain would probably never have done. It adds up.

Having the pistons close to the valves does make the engine slightly more efficient, but it really is in the area that most consumers would never notice. Toyota seemed to be able to handle making engines that were for the most part non-interference just fine without any problems.
TangoFoxTrot is offline   Reply With Quote
Old 09-08-2012, 02:18 PM   #53
Joelfke
Senior Member
 
Joelfke's Avatar
 
Join Date: Mar 2009
Location: Monroe Township, NJ
Posts: 1,757
Send a message via AIM to Joelfke Send a message via Yahoo to Joelfke
Default Re: What cars have interference engines?

Quote:
Originally Posted by TangoFoxTrot View Post
I have a crazy "conspiracy" theory that dealerships push manufacturers to make vehicles with timing belts and interference engines because it's so lucrative for their service departments.

Dealerships will push it WELL before the actual time to replace, and many times get the water pump replaced as well. They also can say with a straight face that if the service isn't done, it will destroy the motor. It's very easy to scare the consumer into getting it done, and it's a thousand dollar service that the same car with a chain would probably never have done. It adds up.

Having the pistons close to the valves does make the engine slightly more efficient, but it really is in the area that most consumers would never notice. Toyota seemed to be able to handle making engines that were for the most part non-interference just fine without any problems.
I'm going to disagree with all due respect, as a dealer tech I HATE replacing timing belts...its a pain in the ass and you always have to worry about having the belt tight enough or else its going to skip timing down the road

Ask a hyundai tech about doing a timing belt on a 3.5L.....gotta triple check it, pays 6 hours for a reason
__________________
"The bolt doesn't really care who made your wrench, its going to be a stubborn prick reguardless"

Quote:
Originally Posted by Merkava_4 View Post
Sears = [fill in the blank] problem. :lol:
Joelfke is offline   Reply With Quote
Old 09-08-2012, 02:29 PM   #54
TangoFoxTrot
Senior Member
 
TangoFoxTrot's Avatar
 
Join Date: Jan 2009
Posts: 896
Default Re: What cars have interference engines?

Quote:
Originally Posted by Joelfke View Post
I'm going to disagree with all due respect, as a dealer tech I HATE replacing timing belts...its a pain in the ass and you always have to worry about having the belt tight enough or else its going to skip timing down the road

Ask a hyundai tech about doing a timing belt on a 3.5L.....gotta triple check it, pays 6 hours for a reason
It might not be a fun job for the actual tech, but I'm sure the service department likes the revenue it brings.
TangoFoxTrot is offline   Reply With Quote
Old 09-08-2012, 04:22 PM   #55
Joelfke
Senior Member
 
Joelfke's Avatar
 
Join Date: Mar 2009
Location: Monroe Township, NJ
Posts: 1,757
Send a message via AIM to Joelfke Send a message via Yahoo to Joelfke
Default Re: What cars have interference engines?

Quote:
Originally Posted by TangoFoxTrot View Post
It might not be a fun job for the actual tech, but I'm sure the service department likes the revenue it brings.
well that might be true....service dept never understands that taking 4 hours on a warranty job that pays 2 isnt "making money" for the tech
__________________
"The bolt doesn't really care who made your wrench, its going to be a stubborn prick reguardless"

Quote:
Originally Posted by Merkava_4 View Post
Sears = [fill in the blank] problem. :lol:
Joelfke is offline   Reply With Quote
Old 09-08-2012, 08:21 PM   #56
Skin
Senior Member
 
Join Date: Feb 2010
Location: Boston
Posts: 6,243
Default Re: What cars have interference engines?

Quote:
Originally Posted by TangoFoxTrot View Post
I have a crazy "conspiracy" theory that dealerships push manufacturers to make vehicles with timing belts and interference engines because it's so lucrative for their service departments.
Do some research. Virtually all diesels are interference as well. Its not a "conspiracy".

Belts are used because thats what has always been used. Chains becoming the norm on OHC engines are a relatively new addition to vehicles.

Quote:
Originally Posted by Link-Belt View Post
Not sure that it matters here but I would think the salution here is simple enough. You guys are talking belts and chains, how about gear drives.
It sounds great to just suggest it, implimentation is another thing entirely. You cant just pop the belt off and stick some cog wheels where they're needed. For many engine designs it would require considerable R&D if not outright scrapping current offerings in favor of a new engine. Any chain or gear driven engine requires a rather complex lubrication system to keep it functioning. If you actually look at car manufacturers most are using engines, or a variation of an engine, that have been in service for decades.

Last edited by Skin; 09-08-2012 at 08:35 PM.
Skin is offline   Reply With Quote
Old 09-08-2012, 10:06 PM   #57
wmartin
Senior Member
 
wmartin's Avatar
 
Join Date: Jun 2011
Posts: 1,452
Default Re: What cars have interference engines?

Quote:
Originally Posted by Link-Belt View Post
Not sure that it matters here but I would think the solution here is simple enough. You guys are talking belts and chains, how about gear drives. Yes I understand gear drives are mostly a performance upgrade but really how much of a gear drive is performance over reliability? Harder to jump time on a gear drive unless maybe it breaks a tooth and I can only see the broken tooth scenario in a high performance application.

Sent from my SCH-R720 using Tapatalk 2
I only play a doctor on TV, but I can think of a few problems.

. Noise. It's going to be darned hard to work that out of the system, depending on how the teeth are designed.
. Distance from the crank to the cam. OHC engines are going to need lots of intermediate gears or some great big ones. Although that might be less awful than the cam chain in 427 SOHC Ford.
. Vibration. My guess is that there's a damping effect when you go through a belt. If all this stuff is directly connected, I'll bet you get the teeth wiggling back and forth as everything accelerates and decelerates. I wouldn't be a bit surprised if you had cams going forwards (mostly) and backwards (a little), maybe a good way to break something.
wmartin is offline   Reply With Quote
Old 09-08-2012, 10:32 PM   #58
mrobins297aaa
Senior Member
 
mrobins297aaa's Avatar
 
Join Date: Sep 2010
Location: south east michigan
Posts: 1,387
Default Re: What cars have interference engines?

2002 Kia rio 4 cyl. 77k........do I have to say interference, about as bad as it gets.



mrobins297aaa is offline   Reply With Quote
Old 09-09-2012, 12:26 AM   #59
sxk122
Senior Member
 
sxk122's Avatar
 
Join Date: Sep 2011
Location: Dallas, TX
Posts: 354
Default Re: What cars have interference engines?

Ford escorts (specifically 2.0 liter ZX2's) were non interference... I lost my timing belt just shy of 100k. put a new one on, and she was good as new
sxk122 is offline   Reply With Quote
Old 09-09-2012, 06:25 AM   #60
MBfreak
Senior Member
 
Join Date: Dec 2010
Location: Vasteras, Sweden
Posts: 384
Default Re: What cars have interference engines?

Interference engines with belt drives are OK, as long as you actually follow the mfrs schedule and procedure wrt belt replacements.
There were some unlucky early designs, like the VW early Golf that scooped up snow when driving thru a snowdrift, unseated the belt and bye bye!

Some Audis have non interference engines, at least according to the mfr. However, even a thin carbon build-up on top of the pistons negates that. No real bad damage, but valves and valve guides need to be replaced. This is on the early 90s 4 bangers.

Again, do replacement as per schedule ( time or distance, whichever comes first) and use only top q belts, tensioners, idlers, water pumps.

Ola
MBfreak is offline   Reply With Quote
Old 09-09-2012, 06:50 AM   #61
wormwood
Senior Member
 
wormwood's Avatar
 
Join Date: Apr 2010
Location: Dixie
Posts: 887
Default Re: What cars have interference engines?

Miatas are non interference.
wormwood is offline   Reply With Quote
Old 09-09-2012, 08:51 AM   #62
Wakefield
Alliance Member
 
Join Date: Aug 2010
Location: Arlington VA (but would like to get out to country or small town)
Posts: 1,489
Default Re: What cars have interference engines?

Do some newer Diesel designs use overhead cams? Do they have gear drive for these cams? For cam in block gear driven cam the best except most expensive if done right (with torsional dampers)?
Cheap plastic or bakelite timing gears on some Iron Duke or something cam drive?

I guess the more shafts you have to drive in each head the harder it gets to invent a system to drive all of them.

Last edited by Wakefield; 09-09-2012 at 09:11 AM.
Wakefield is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 09-09-2012, 09:38 AM   #63
GirchyGirchy
Senior Member
 
GirchyGirchy's Avatar
 
Join Date: Nov 2011
Location: Central Indiana
Posts: 1,581
Default Re: What cars have interference engines?

Quote:
Originally Posted by wmartin View Post
. Noise. It's going to be darned hard to work that out of the system, depending on how the teeth are designed.
. Distance from the crank to the cam. OHC engines are going to need lots of intermediate gears or some great big ones. Although that might be less awful than the cam chain in 427 SOHC Ford.
. Vibration. My guess is that there's a damping effect when you go through a belt. If all this stuff is directly connected, I'll bet you get the teeth wiggling back and forth as everything accelerates and decelerates. I wouldn't be a bit surprised if you had cams going forwards (mostly) and backwards (a little), maybe a good way to break something.
Noise is a big one...they need to be helical gears rather than spur, so you also need thrust bearings in the cam & crank.

You're also right about the amount of gears required, especially for an OHC design...many gears, some of them very large. This also makes it pretty heavy.

I'll have to take a picture of the geartrain in a Cummins ISX15 - It's pretty crazy.
GirchyGirchy is offline   Reply With Quote
Old 09-09-2012, 10:35 AM   #64
greasemonkey44
Senior Member
 
greasemonkey44's Avatar
 
Join Date: Mar 2011
Location: memphis
Posts: 1,529
Default Re: What cars have interference engines?

2.4l pt cruiser motors are not in my experience
however i have heard the valves can click together if you are unlucky
1.8l chain driven toyota engines are
i dont think eco tech engine are
__________________
Quote:
Originally Posted by countryroad82
I don't break tools very often, when I do it is in grand fashion and normally my fault.

Last edited by greasemonkey44; 09-09-2012 at 05:14 PM.
greasemonkey44 is offline   Reply With Quote
Old 09-09-2012, 11:07 AM   #65
ourkid2000
Senior Member
 
Join Date: Jul 2008
Location: Nova Scotia
Posts: 919
Default Re: What cars have interference engines?

I had an 89 Toyota Celica GT.......blew the belt at 270,000 km while I was at a red light. I remember trying to start it and it was basically freewheeling. I didn't have the slightest idea what was going on at the time. This was long before I had a clue, obviously *shakes head*.

Anyways, replaced the belt and it worked fine. She was a non-interference for sure.

Loved that car. I'm having another one if I ever find on in nice condition.
ourkid2000 is offline   Reply With Quote
Old 09-09-2012, 03:23 PM   #66
DARKSCOPE001
Senior Member
 
DARKSCOPE001's Avatar
 
Join Date: May 2009
Location: Pickerington Oh
Posts: 767
Default Re: What cars have interference engines?

pretty sure just about every engine these days is. im not sure of to many that arent. i know the engine in my current and last car were interference. my last car had a timing belt and it went 120 miles on the origional (im not recomending this im just saying it happened) till i changed it. sadly other things on the car let go and i wasnt able to reap the benifits of a fresh belt and pulleys.

Current car is a toyota yaris. interferance engine. dual overhead cams that are chain driven. toyota says chain is good for the "life" of the car. not sure what the life of a car is but i suppose if i have this car long enough ill change it out eventually.
DARKSCOPE001 is offline   Reply With Quote
Old 09-09-2012, 04:04 PM   #67
walrus
Senior Member
 
walrus's Avatar
 
Join Date: Nov 2008
Location: Maine
Posts: 4,032
Default Re: What cars have interference engines?

My 96 Honda Odessey does, I did the leak down after it stalled to prove it
walrus is offline   Reply With Quote
Old 09-09-2012, 04:16 PM   #68
dlc
Senior Member
 
dlc's Avatar
 
Join Date: Nov 2008
Location: Northwest NC
Posts: 915
Default Re: What cars have interference engines?

I use this, it is very accurate

http://www.supratrucks.com/pictures/...nt%20Guide.pdf:
__________________
my website
www.supratrucks.com

my build
dlc is offline   Reply With Quote
Old 12-17-2012, 01:58 AM   #69
jdepriest711
Junior Member
 
Join Date: Dec 2012
Posts: 1
Default Re: What cars have interference engines?

I have a 2000 Chevy Cavalier with a 2.2L Engine. My car has a timing chain and from what i read on gates website my car doesn't have a interference engine in it. But please tell me if im right.

My timing chain broke and i have to get it replaced so i want to double check my findings before i move further with my repairs. Thanks in advance.
jdepriest711 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 05:40 AM.