| jfats808 |
Wed Jun 10, 2020 8:35 pm |
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| Building a 2332 with 5.325 rods, got about .050 clearance after shaving the piston down some. What's rule of thumb clearance there after operating temp expansion? |
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| Dan Ruddock |
Thu Jun 11, 2020 6:32 am |
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| Sounds like enough to me, rule of thumb is .040. Depends on how much crank flex you have. Dan |
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| Ohio Tom |
Thu Jun 11, 2020 6:53 am |
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I'm not understanding what, "Rod to piston pin clearance" is?
Are you talking about the wristpin fit into the rod bushing?
Typically that is .0005" to .0015". |
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| Dan Ruddock |
Thu Jun 11, 2020 7:16 am |
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Ohio Tom wrote: I'm not understanding what, "Rod to piston pin clearance" is?
Are you talking about the wristpin fit into the rod bushing?
Typically that is .0005" to .0015".
The underside of the pin boss to the opposing cylinder rod cap, short rod with 84 crank. I have done it with oem Porsche rods which are a little longer than OP’s rods. Not sure I would even do what he is doing. Dan |
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| Ohio Tom |
Thu Jun 11, 2020 8:40 am |
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Ahh. OK.
I understand now.
short rod problems..
LOL. |
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| bugguy1967 |
Thu Jun 11, 2020 10:00 am |
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| I don't think the clearance is for temp expansion as much as it is for tolerance stack-up, flexing, bearing wear, etc. .050" is about the minimum there. |
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| jfats808 |
Thu Jun 11, 2020 11:38 am |
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| I've decided to install longer rods and get more clearance. Didnt feel comfortable, other rod caps were closer than .050 and I dont want to clearance anymore from the boss. Thanks for replies. |
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