rod bearing clearance

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Re: rod bearing clearance

Post  460Dave on November 26th 2015, 5:42 pm

Thanks, and Happy Thanksgiving to all.

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Re: rod bearing clearance

Post  richter69 on November 26th 2015, 5:44 pm

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

Run it Very Happy

Clearance is application drive also.

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


Same
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Re: rod bearing clearance

Post  hienergy557 on November 26th 2015, 7:20 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?
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Re: rod bearing clearance

Post  460Dave on November 26th 2015, 7:32 pm

I swapped some around and got a better grouping.

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

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Re: rod bearing clearance

Post  richter69 on November 26th 2015, 8:30 pm

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