How to Attach Reamer to Drill?

[bulletpruf]

When reaming out automotive valve guides and using a piloted reamer in a hand drill, I have seen a flexible joint used to attach the reamer to the drill, allowing for straight holes even if the drill is not 100% aligned.

What would this joint/chuck be called? My Google-fu is weak today.

Thanks

Scott

 

[NORTON'S SHOP]

Something like this?

 

[bulletpruf]

Something like this?

I think so. My reamer has a square piece on the end.

 

[dnschmidt]

See what Goodson has. Call them up and ask them where to get one of these joints. I know exactly what you're talking about but can't find it either. The one shown in the picture above is super light duty for driving screws the one you're talking about looks like a universal joint and is ten times bigger. Sunnen might make these.

 

[ez-duzit]

Something like this?

I think that will truly F-up your bore, no matter how well piloted the reamer may be.

Surely you are not trying to do this without removing the head?

 

[bulletpruf]

Cylinder heads are off, cleaned, magged, valve guides measured, etc.

BTW - please don’t call me Shirley.

 

[bulletpruf]

See what Goodson has. Call them up and ask them where to get one of these joints. I know exactly what you're talking about but can't find it either. The one shown in the picture above is super light duty for driving screws the one you're talking about looks like a universal joint and is ten times bigger. Sunnen might make these.

E mailed Goodson. They said they didn’t have it. May have to follow up with a phone call.

 

[Steve_P]

I have done this by hand, or with the reamer chucked directly in the drill. If you are using a hand drill, I don't see what real purpose a flexible joint would serve- you shouldn't need a death grip on the drill.

 

[bmwrd0]

If the reamer has a square section at the end, it is not for chucking but for a hand tap.

 

[Rusted Nut]

I wouldn't use a reamer on a hand drill; to easy to screw up. I would do it by hand, or on a machine reamer.

 

[Steve_P]

OP, you may need to use two sizes of reamers. I looked at what reamers I have, and I used two different ones, sized .001" apart. I probably ran the first one thru with a drill and the second by hand. No idea, it's been so long.

 

[bulletpruf]

OP, you may need to use two sizes of reamers. I looked at what reamers I have, and I used two different ones, sized .001" apart. I probably ran the first one thru with a drill and the second by hand. No idea, it's been so long.

I only needed to enlarge the valve guides by about .001" so I only got one reamer.

Thanks

 

[larry_g]

If the reamer has a square section at the end, it is not for chucking but for a hand tap.

X2 on this

 

[RAYJAY]

If the reamer has a square section at the end, it is not for chucking but for a hand tap.

no they make sockets for the square taps and reamers

https://www.amazon.com/dp/B0002SRFOE/?tag=atomicindus08-20

or these

https://www.amazon.com/dp/B000TGM7HY/?tag=atomicindus08-20

 

[bulletpruf]

no they make sockets for the square taps and reamers

https://www.amazon.com/dp/B0002SRFOE/?tag=atomicindus08-20

or these

https://www.amazon.com/dp/B000TGM7HY/?tag=atomicindus08-20

I do have a set of those...

 

[mogandave]

Those Irwin tap-sockets are the bomb!

 

[bmwrd0]

no they make sockets for the square taps and reamers

https://www.amazon.com/dp/B0002SRFOE/?tag=atomicindus08-20

or these

https://www.amazon.com/dp/B000TGM7HY/?tag=atomicindus08-20

I can't think of a better way to break a tap or reamer than to use those. But, to each his own.

 

[dnschmidt]

The tool he is looking for does exist. There is a YouTube channel called Jim's Automotive Machine Shop and he uses this exact tool and a DeWalt drill all the time for this purpose. It is what it's designed for. He just wants to know where to buy one. THIS IS HIS QUESTION. I don't think he cares what you, me or anybody else would do or think. Me, I'd call Jim's Machine shop and ask him where he bought it. The worst that could happen is they tell him to **** off.

 

[RAYJAY]

I can't think of a better way to break a tap or reamer than to use those. But, to each his own.

i have power tapped in SS angle iron and tapped in cast iron with a impact gun never have a problem....... power tapping at app. 7:05

tap with a impact gun - Bing video

www.bing.com

 

[bulletpruf]

The tool he is looking for does exist. There is a YouTube channel called Jim's Automotive Machine Shop and he uses this exact tool and a DeWalt drill all the time for this purpose. It is what it's designed for. He just wants to know where to buy one. THIS IS HIS QUESTION. I don't think he cares what you, me or anybody else would do or think. Me, I'd call Jim's Machine shop and ask him where he bought it. The worst that could happen is they tell him to **** off.

It's similar to what they're using at 1:38 in this video, but that's a hone, not a reamer.

 

[Steve_P]

I only needed to enlarge the valve guides by about .001" so I only got one reamer.

Thanks

If you only need to remove .001", you should be able to do it by hand

 

[bulletpruf]

If you only need to remove .001", you should be able to do it by hand

If that's the correct way to do it, I'm ok with that.

Thanks

 

[mogandave]

If that's the correct way to do it, I'm ok with that.

Thanks

I would do it by hand.

 

[LXCam]

I highly suggest by hand as well.

 

[bulletpruf]

Here's something that appears to be designed for this task - speed reducer, some swivel action, fits the reamer square shaft.

Vintage Babco 821 Speed Reducer (5:1) 1/4" Square Output | eBay

Find many great new & used options and get the best deals for Vintage Babco 821 Speed Reducer (5:1) 1/4" Square Output at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[ez-duzit]

Here's something that appears to be designed for this task - speed reducer, some swivel action, fits the reamer square shaft.

Vintage Babco 821 Speed Reducer (5:1) 1/4" Square Output | eBay

Find many great new & used options and get the best deals for Vintage Babco 821 Speed Reducer (5:1) 1/4" Square Output at the best online prices at eBay! Free shipping for many products!

www.ebay.com

No way.

 

[PetesPonies]

No way.

That's EXACTLY what that tool is designed for. Lol the comments some people make. Smh

 

[bulletpruf]

That's EXACTLY what that tool is designed for. Lol the comments some people make. Smh

That's what I was thinking, too. I picked up a lightly used one on eBay.

 

[leadfoot70]

1/4 inch socket drive extension with the male end cut off. Grind about half the depth off the female end. This will give the reamer some side to side play so you don’t bind it if your drill angle isn’t perfect. Chuck up in standard hand drill. Use either a low speed or variable speed with just enough trigger to get you to the slow speed you want. Allow the reamer to pass completely thru and drop onto a padded area below the guide. I use a rubber mat. Total cost to me, single 1/4 inch socket extension and about 5 min in front of the bench grinder.
Go slow
Low pressure as you ream.

Personally I ream to .001
Then I hone the last thou with a sunnen honall
Using a sunnen guide gage I can check my sizes. The reamer is consistent and strait so long as I was careful to keep all side pressure off it by holding the drill reasonably strait. In fact
I have to intentionally force the reamer out of alignment to measure any amount of out of round or out of strait in the guide. And even then it’s so small it honed out easily. I just tried.

 

[Wrench97]

What size is the square end?
I have a 7/16, 1/2" drive impact swivel socket that has a 7/16 allen held in by a roll pin that came in a Kent Moore kit years ago to enlarge the head bolt holes in 8.2L Detroits from 14 mm to 16 mm.
The ream and taps were all designed to run through a bolt on guide and be powered by a 1/2" hand drill



The hex goes in the drill and the 1/2" square end goes over the tap or ream.