Pistons

[Warehouse1001]

Any one know what changed relative to the L and M piston versus the A and B? Note they have different part numbers. Interchangeable? Thanks.

[rngdng]

MAB pistons should all be the same (are at least interchangeable). J-L pistons are narrower at the wrist-pin and will not accept the later spacers. You can run early pistons on later rods, but you have to leave the spacers out.


Lane

[Warehouse1001]

Lane, that would explain it. Thank you. Any idea why the parts manual shows L and M with the same part number?
Chuck

[tz375]

Slight addendum: J and K pistons are narrow inside. L, M, A &B are all the same as each other and are machined to take thurst washer on the small end.

[Warehouse1001]

Perfect...Mine (L model) does have the thrust washers. Many thanks.