Pilot Bearing issue May 14, 2010 20:05:15 GMT -6
Post by dspeed on May 14, 2010 20:05:15 GMT -6
I've posted this at DTA and Sweptline w/o much response. Figured I'd try here.
Back from travel, yard work caught up (well, sorta), the DTA headers are here and I'm back to work on the Poly.
Looking through the manual, I could not find a torque value for the flywheel bolts. Seems that I'm not the only one with this problem. Anyhow, I settled for 55 ft pounds as appropriate for that size bolt.
After some thought, it seemed to me that I had to remove the clutch/flywheel before getting the bellhousing off. After the discussion here and looking it over, I did not see what an issue. was. Installing the flywheel first was fine.
But now, I'm stuck on a pilot bearing issue. Is there more than one size? I bought a new one from Rock Auto. It fits over the transmission shaft nicely. It is a Dorman pn 14652. After a good cleaning, I cannot see or feel a bearing or shoulder (of an old bearing) inside the crank. I pulled the pilot bearing out of another crank (labeled as 'old' below) one out of another crank (on a -2 blocack. This bearing was obvious. They are both essentially the same size and match the nominal dimensions on the package as shown below:
package measured measured
dimensions dimension dimension
length 0.873 0.875 0.878
id 0.753 0.750 0.755
od 0.939 0.940 0.938
I can get a Sears 11/16" deep socket (OD 0.920"winking smiley into the old crank handily. I can't get this into the new (aka 'installed') crank. My calipers don't reach quite that deep, but I'd say it was 0.900 or 0.910 diameter. The new crank was from a -1 block and the old crank was from a -2 block.
This has me stopped for the moment. I have another good crank 'old', but would hate to pull this one out. I have a friend w a lathe and could take 0.020 off the bearing. Or use a brake cyl hone on the crank? Or use a bigger hammer?
What size drill (fractional/letter/number???) would it take to get a 0.940 cut?