roller pilot bearing.
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
roller pilot bearing.
Hello
When I install my GM/T56 Viper trans, I want to use a pilot roller bearing.
Does this one fit my 68 427 CI BB M21 setup ? The T56 Viper should have the same size as the M21.
SUM-G1700 Roller Pilot Bearing, Chevy all V8, 90 Degree V6, 76-up Buick V6
$12.99
Thanks and merry Christmas. Gunther
When I install my GM/T56 Viper trans, I want to use a pilot roller bearing.
Does this one fit my 68 427 CI BB M21 setup ? The T56 Viper should have the same size as the M21.
SUM-G1700 Roller Pilot Bearing, Chevy all V8, 90 Degree V6, 76-up Buick V6
$12.99
Thanks and merry Christmas. Gunther
Melting Slicks
Joined: Feb 2002
Posts: 2,298
Likes: 1
From: Sodertalje/Sweden
I was looking into this a time ago and searched the archives and the conclusion was that if you`re going with a roller bearing you have to check the alignment of the inputshaft vs crank. 
..
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Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Our Nascar engines use either a bushing or bearing, it is up to the team.
Either the bushing or bearing only comes into play when the clutch is disengaged. Then the input shaft and the crankshaft spin at different speed. When the clutch is engaged both the input shaft and the crankshaft spin at the same RPM so it does not matter whether you use a bearing or bushing. Shifting is not an important matter for Nascar motors except at Pocono or the road coarses.
If you are flattening out roller pilot bearings you either have an alignment problem or have a low quality bearing(a lot of aftermarket pilot bearings are very low quality). Whenever I use a pilot bearing I only use one from GM. But personally I do not see a benifit of one over the other.
Regardless of which one you use, if you shift hard make sure you dial indicate the bellhousing to eliminate any bind.
Pete
Either the bushing or bearing only comes into play when the clutch is disengaged. Then the input shaft and the crankshaft spin at different speed. When the clutch is engaged both the input shaft and the crankshaft spin at the same RPM so it does not matter whether you use a bearing or bushing. Shifting is not an important matter for Nascar motors except at Pocono or the road coarses.
If you are flattening out roller pilot bearings you either have an alignment problem or have a low quality bearing(a lot of aftermarket pilot bearings are very low quality). Whenever I use a pilot bearing I only use one from GM. But personally I do not see a benifit of one over the other.
Regardless of which one you use, if you shift hard make sure you dial indicate the bellhousing to eliminate any bind.
Pete
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Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Thanks a lot.
So, if roller bearing, than from Chevy.
Any P/N for this, so that my fellow worker collegue can get it from Chevy for me ?
@ redvetracr
Thanks for the offer. Asking my collegue will save me the shipping and you the hassle. I would need the P/N to make it easy for him.
He lives in Seattle and drives " Mercedes ".
Greetings. Gunther
So, if roller bearing, than from Chevy.
Any P/N for this, so that my fellow worker collegue can get it from Chevy for me ?
@ redvetracr
Thanks for the offer. Asking my collegue will save me the shipping and you the hassle. I would need the P/N to make it easy for him.
He lives in Seattle and drives " Mercedes ".
Greetings. Gunther
Melting Slicks
Joined: Jun 2001
Posts: 2,429
Likes: 14
From: CA
This is what I have & what redvetracr is refering to
http://www.gmgoodwrench.com/perfpart...394§ion=ep
http://www.gmgoodwrench.com/perfpart...394§ion=ep
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Annone here know how to get the old bearing out with the motor in the car, heard a couple of ways that sound more like someone just thought up a way that might work including the grease gun fantasy I had to hammer mine in so I doubt it will come out easy, anyone actually done it ? 
Le Mans Master
Joined: Mar 2004
Posts: 7,470
Likes: 1,492
From: Little Rock AR
The bronze bushing is cheap, does the job, is easier to remove, and is more tolerant of any bellhousing misalignment.
The roller bearing costs more, does the job, is much harder to remove, and is less tolerant of any bellhousing misalignment.
The car will not be any faster or work any better either way, SO......you make the call.
-Mark.
The roller bearing costs more, does the job, is much harder to remove, and is less tolerant of any bellhousing misalignment.
The car will not be any faster or work any better either way, SO......you make the call.
-Mark.
Race Director
Joined: Apr 1999
Posts: 10,866
Likes: 717
From: Beverly Hills/Pine Ridge Florida
Originally Posted by ZD75blue
I've always just heard that you blob grease into the hole in the bearing, and find a rod thats the same size as the ID of the hold in the bearing. Push on grease, grease pushes bearing out.
Try a small slide hammer and see if you can tap it out. If that fails, use a die grinder/dremel and cut radial cuts in it and take it out in pieces. DON'T get overzealous with the die grinder and gouge your crank. Chuck
Team Owner
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Originally Posted by 71coupe
This is what I have & what redvetracr is refering to
http://www.gmgoodwrench.com/perfpart...394§ion=ep
http://www.gmgoodwrench.com/perfpart...394§ion=ep
Le Mans Master
Joined: Mar 2004
Posts: 7,470
Likes: 1,492
From: Little Rock AR
Originally Posted by MotorHead
Annone here know how to get the old bearing out with the motor in the car, heard a couple of ways that sound more like someone just thought up a way that might work including the grease gun fantasy I had to hammer mine in so I doubt it will come out easy, anyone actually done it ?
-Mark.
