[Glene]

Number 6 piston has rod bearing spun. After polishing the spun rod journal, it's measured 0.635mm (.025") less in diameter comparing to one of the good rod journals. I may need over-sized rod bearings for this piston, but not sure which size to get. I will use plastigage to check the clearance, but don't have the clearance tolerance specs for this engine. Any advice on the rod bearing size and tolerance specs? Thanks,

[Tunafish]

N55
https://www.newtis.info/tisv2/a/en/e...rings/AlznYERj
N54
https://www.newtis.info/tisv2/a/en/e...arings/6t9ti6C

[Glene]

[QUOTE=Tunafish;26624845]N55
https://www.newtis.info/tisv2/a/en/e...rings/AlznYERj

How do I read these numbers? Thanks,

[Welcome to NBA Jam]

Originally Posted by glenpointe

How do I read these numbers? Thanks,

They're Plastigage values.

[pure_7777]

Originally Posted by Glene

Number 6 piston has rod bearing spun. After polishing the spun rod journal, it's measured 0.635mm (.025") less in diameter comparing to one of the good rod journals. I may need over-sized rod bearings for this piston, but not sure which size to get. I will use plastigage to check the clearance, but don't have the clearance tolerance specs for this engine. Any advice on the rod bearing size and tolerance specs? Thanks,

I’m doing rod bearings on my N54. I’m using king racing bearings. I can’t find info on the clearance for the rod bearings! can anyone help me out? is it the same as N55?