bearings

[mark3006]

1942 h s/n 114195. having trouble with rod bearings. bearing # shows .002.the crank diameter matches what is in the book.what p/n bearings should i buy. i tried standard size but there is alot of play.the old bearing is about .100" thick the replacement bearing is about .075" thick.what is the difference in the early crank and late crank,could it have been changed

 

[teddy52food]

Find the forging # on the crank. Check with a machine shop that grinds cranks and they can tell if it is early or late. Also give the right specs.

 

[El Toro]

You need to take that crankshaft to your local auto machine shop and have them measure it for wear and to see if it's still round and not egg-shaped. They can determine if it needs to be ground. They can supply the correct bearings too. You probably need new cam bearings since they determine good oil pressure. Hal
PS: That shaft should measure 2.2475-2.2485" on the rods and 2.4975-2.4985" on the mains. You need from .001" to .0015 clearance on the bearings.

 

[Anonymous-0]

I hired the machinist at our local engine machine shop for a half hour to come out to my place and measure the crank for bearing sizes (rods) and condition. Good investment for the $20.00 it cost (and even at that the $20 was a tip). In my case money/time well spent.

After i found out what I had and the clearences etc, info and all I purchased my Federal Mogul bearings and new oil pump from him... one hand wash's the other. Takes alot of the worrys out of the equation and I didn't have to buy a bunch of expensive micrometers. Hope this helps.