Alternative for garage exhaust hose?

[ADSR]

After looking at the prices here for a through wall port, i'm going to build my own. The prices are ridiculous. Not sure what i can come up with for a 3" exhaust hose.

Any ideas?

http://www.hosecraftusa.com/model/RG1_Garage_Exhaust_Hose

 

[Thumper68]

I converted a dryer vent, took the outside piece and attached it to a 3 in pvc pipe and screwed it to the wall where I could connect my hose.

 

[ADSR]

I converted a dryer vent, took the outside piece and attached it to a 3 in pvc pipe and screwed it to the wall where I could connect my hose.

Hmmm... You mean the high heat aluminum flex hose?

 

[Thumper68]

Sorry I thought you ment the through the wall part, I had a real 2 1/2 inch exhaust hose to use.

 

[zkdiesel]

Diesel exhaust even gets so hot at high idle my real exhaust hose almost wants to melt. Bite the bullet if you need high flexibility and buy the proper stuff, seem guys melt other similiar non exhaust hose

 

[zkdiesel]

http://www.garagejournal.com/forum/showthread.php?t=253800

 

[saabman]

Exhaust gas at idle loads is not very hot (relatively speaking). As load goes up, the heat of the exhaust system and exhaust gas goes up. I have chassis dyno, and it is easy to melt cheap exhaust hose. For my context, I buy the stuff that is thick and rated for high temp.

 

[redmondjp]

Another vote for all-aluminum flexible dryer vent pipe (not the silver plastic hose). I use 3" flexible duct (folded over on itself on the end to fit the exhaust pipe with a hose clamp around it) and run it out underneath the garage door. It was under $20 at the local big-box store.

 

[ADSR]

http://www.garagejournal.com/forum/showthread.php?t=253800

That's an awesome setup!

 

[bzinsky]

I use a shop vac hose, happens to be the perfect size that I can just shove it inside the exhaust pipe of one car, and over it on another. EGT's at the exhaust tip are not very high at idle, it gets soft but doesn't melt.

I have a 4" hole cut into my garage door, and then a 5 inch circle plate with a not so tight screw at the top, I just flip it up and shove the hose through it.

 

[rlitman]

Another vote for all-aluminum flexible dryer vent pipe (not the silver plastic hose). I use 3" flexible duct (folded over on itself on the end to fit the exhaust pipe with a hose clamp around it) and run it out underneath the garage door. It was under $20 at the local big-box store.

It's cheap, but kinks easily, and is easily ruined if you step on it.
Also, anything metal will get uncomfortably hot on the outside.
But this makes me think...what about stainless chimney liner. They make this is small diameters, and you can stand on it (though it's not very flexible).

The secret to keeping the rubber hose cool enough is to use a large diameter hose, and a blower that pulls more air than your exhaust puts out. It'll **** cool air into the gap, which dilutes the heat a lot.

 

[redmondjp]

It's cheap, but kinks easily, and is easily ruined if you step on it.
Also, anything metal will get uncomfortably hot on the outside.
But this makes me think...what about stainless chimney liner. They make this is small diameters, and you can stand on it (though it's not very flexible).

The secret to keeping the rubber hose cool enough is to use a large diameter hose, and a blower that pulls more air than your exhaust puts out. It'll **** cool air into the gap, which dilutes the heat a lot.

You are correct about everything that you said!

But you can buy a cart-load of those $15-20 flexible aluminum tubes for the price of one piece of the correct rubber hose - I don't use mine that much so it's not worth the expense for me at this time.

 

[bzinsky]

It's cheap, but kinks easily, and is easily ruined if you step on it.
Also, anything metal will get uncomfortably hot on the outside.
But this makes me think...what about stainless chimney liner. They make this is small diameters, and you can stand on it (though it's not very flexible).

The secret to keeping the rubber hose cool enough is to use a large diameter hose, and a blower that pulls more air than your exhaust puts out. It'll **** cool air into the gap, which dilutes the heat a lot.

Most dont need a blower for a personal shop, the main reason a shop has a blower is its completely universal. It doesnt matter if the hose doesnt fit perfectly because its a vacuum. If you only have only a few vehicles you work on, just buy 3 different hose/boot combos that seal up the connection from the exhaust tip to the hose pretty well and run it outside. Assumming you dont have an exhaust leak elsewhere.

 

[TAMU05]

I was planning on the dryer exhaust vent method. Dryer vent in the wall, ducting, and an inline fan (http://t.homedepot.com/p/Suncourt-Corded-4-in-In-line-Duct-Fan-DB204-CRD/203227157/ or similar) to help pull fumes. This is just for a 600cc bike exhaust, so probably the low end of what you guys are dealing with.