Re: rod bearing clearance

460Dave November 26th 2015, 7:42 pm

Thanks, and Happy Thanksgiving to all.

richter69 November 26th 2015, 7:44 pm

Lem Evans wrote:
460Dave wrote:Callies Ultra, on a Callies billet crank, yes, spray (300 - 400)

Run it

Clearance is application drive also.

Or, put coated bearings in it......best answer.

Same

hienergy557 November 26th 2015, 9:20 pm

460Dave wrote:I know this is an old post, but it is still relevant. I have a quick question. Is .0033 too much clearance for the rods? Everything I read says .0028 - .003. Is it better to err on the high side or low? How much is too much?
Here is my measurements w/ King HP X bearings.
1 - .0029
2 - .003
3 - .0032
4 - .0029
5 - .0032
6 - .0029
7 - .0033
8 - .0031
Would I be better off to close up some of these with a half shell of a standard bearing? I might be able to move bearings around and get them all closer to .003. What do you guys think?

Have you tried swaping the shells from rod 6 to rod 7?

460Dave November 26th 2015, 9:32 pm

I swapped some around and got a better grouping.

As it is now,
.0030
.0030
.0030
.0030
.0032
.0031
.0031
.0031

richter69 November 26th 2015, 10:30 pm

I like green oil and green pistons......

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