Posted by PackardV8 on January 22, 2013 at 08:34:48 from (205.188.116.19):
In Reply to: 134 piston direction? posted by Tony in Mass. on January 20, 2013 at 16:11:58:
Perhaps not that it matters in terms of repop pistons but what does the service manual say about piston installation front/rear???? Do the OEM pistons with no pin offset have any marks or notches to indicate front?????
It mite be advisable to look at the oil ring groove (of OEM) to determine if there are any holes in the groove to one side or the other of the piston.
As for my comment above about engine balancing i should have specified engines of FOUR or more cylinders and NOT in a radial configuration such as some airplane engines.
Note that the Z120 has no counterweights. I have several V8 passenger car cranks here and V12. When placed COMPLETELY BARE on leveled knife edges the cranks will hold their position no matter how they are stopped on the knife edges. Piston and/or rod has no effect on crank balance (except 1 and 2 cylinder engines and radials).
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