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Jim Hawkins 06-28-2025 11:02 PM

Question for stick racers
 
What are you guys using for a pilot bearing or bushing?
I have been using a ball bearing in a bushing made to fit in the back of the crankshaft. This is the larger hole where the convertor hub would fit.
Problem is getting one made for each specific crank and fit needs to be about perfect.
Also can have clearance problems to the splines on the input.
I tried a bushing from speedway once that has a shoulder for extra height with a motor plate. It spun loose after very few runs.
I have a torrington type bearing here from moroso goes in stock pilot hole.
Anyone use these? Believe this is used in some oem applications.

james schaechter 06-29-2025 09:40 AM

Re: Question for stick racers
 
Quote:

Originally Posted by Jim Hawkins (Post 713827)
What are you guys using for a pilot bearing or bushing?
I have been using a ball bearing in a bushing made to fit in the back of the crankshaft. This is the larger hole where the convertor hub would fit.
Problem is getting one made for each specific crank and fit needs to be about perfect.
Also can have clearance problems to the splines on the input.
I tried a bushing from speedway once that has a shoulder for extra height with a motor plate. It spun loose after very few runs.
I have a torrington type bearing here from moroso goes in stock pilot hole.
Anyone use these? Believe this is used in some oem applications.

The sealed bearing is best, but you have to have it set when the crank is out. I have used the needle bearing bushing in stockers but they do wear out. I have also used the Kevlar ones in a pinch.
The modern clutches we all use put more strain on the pilot bearings so anything other than a good strong roller bearing is going to get wobbled out and can cause issues. Thst is ok as long as you keep an eye on it and are prepared to change them as needed.

Mark Yacavone 06-29-2025 12:43 PM

Re: Question for stick racers
 
I have used roller bearing, in place of a bushing, but let's just say they are unforgiving.
I had to indicate the bell housing and re-balance all the clutch components...then it was fine.

Robbie Draughon 06-29-2025 01:22 PM

Re: Question for stick racers
 
Lakewood 15975. For chevy engine and the bigger ford pilot size. Have run these for years.

Jim Hawkins 06-29-2025 09:19 PM

Re: Question for stick racers
 
Yes you just answered my next question. Upgrade to the Ford pilot size.
Thanks for all replies.

Dirk Olson 07-01-2025 02:06 PM

Re: Question for stick racers
 
Call G Force have them in two motors with different crank manufactures and I have had no problems. I used to get them from Jerico but these fit much better.

Paul Merolla 07-02-2025 03:08 PM

Re: Question for stick racers
 
I've been using the GM 12557583 that registers in the larger hole in the crank where a torque converter fits.
Available on Summit for $13.99.
Haven't had to pound out a pilot with bread ever since! Haha

Rory McNeil 07-02-2025 04:31 PM

Re: Question for stick racers
 
On my 427/428 FE Fords, I use a sealed ball bearing, supposedly the original application was a GM alternator. only issue is an extra .001 or 2 would hold it in better, sometimes it slides out while removing the transmission.
On my SB Fords, I use a factory needle bearing pilot for a 5.0L FOX Mustang, and replace them every year, as they tend to wear.
Many years ago, when I bought my first Jerico, and McLeod "Soft Lok" sintered iron disc clutch, I used a factory bronze bushing, but the iron dust from the disc ate the bronze up really quickly.

Jim Hawkins 07-03-2025 03:02 PM

Re: Question for stick racers
 
Quote:

Originally Posted by Paul Merolla (Post 713926)
I've been using the GM 12557583 that registers in the larger hole in the crank where a torque converter fits.
Available on Summit for $13.99.
Haven't had to pound out a pilot with bread ever since! Haha

Thanks Paul! I have not seen this one.
Ordered one and will see how it fits.
Measuring this crank looks like it should work. Aftermarket crank.
If all goes back together will test it somewhat locally, Julesberg, and hope to make the midwest and divisional races at Earlville.


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