I know where to get plastigauge. Im asking what should clearance be between rod and crankpin
?
The accepted norm for standard engines is 1.0 thou for every inch of journal diameter.
So a 1.5" journal needs 0.0015" running clearence.
Note this is 15 thenth thou so you are measuring in 0.0001" which is why you use plasti gauge to measure it.
Plasti gauge is good down to 0.00001 incriments.
It does not get printed because it is not a range, like the acceptiable limit of wear in a journal it s a function of the actual journal size.
There is zero limits on this unless you are a very experienced engineer with access to oil flow tables.
