1934 21 stud need info oil presure +leaks
 

I have worked on model A and B motors,shims ,oil slinger etc.. before i pull motor ..oil presure about 30 when cold but about 5 to 10 psi when hot...no smoke out of pipe but leaks oil when shut down..does 1934 21 stud have floating rod bearings like a 59AB ? can I shin rods and mains to tighten clearence like a model B ??? compression about 65 to 75 each cylinder.. runs good and good power.... but I think I will have to pull motor..opinions needed ..thanks in advance..

Re: 1934 21 stud need info oil presure +leaks
 

34 is babbitt mains. So there could be shims to remove.

To me the oil pressure doesn't sound bad, 0 is bad, pretty normalish on a regular old engine. We tend to over do things. But It wouldn't effect cylinder pressure, which is a bit low.

You could remove the pan and clean the pickup screen and/or at the same time change out the oil pump spring. Off hand I wouldn't be to worried about the oil pressure.

They all leak a little oil. or not... depends on whom you ask. If power is good, run it.




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Re: 1934 21 stud need info oil presure +leaks
 

The engine does have floating rod bearings.

Re: 1934 21 stud need info oil presure +leaks
 

it should not have shims

Re: 1934 21 stud need info oil presure +leaks
 

Shims on the mains and no shims on the rods.

Re: 1934 21 stud need info oil presure +leaks
 

V8's Never had shims.!

Re: 1934 21 stud need info oil presure +leaks
 

Probably not from the factory, but I had a '35 21 stud flathead V8 engine rebuilt by Schwalms in Strasburg, Pa., and he used shims on the mains. I found them in place when I had to remove the oil pan for an unrelated problem.
This engine now has over 35k miles since rebuild, so I see no problems related to these shims.