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Author Topic:   L2256 Forged Piston
dasher31
Member
posted November 01, 2004 05:48 PM
I just bought a set of L2256 Forged Pistons from a buddy and need to know what to tell the maching shop to bore/hone the cylinders to for clearance. Anybody know what the piston to cylinder wall clearance should be?
Thanks


engineman
Member
posted November 02, 2004 03:00 AM
quote:
Originally posted by dasher31:
I just bought a set of L2256 Forged Pistons from a buddy and need to know what to tell the maching shop to bore/hone the cylinders to for clearance. Anybody know what the piston to cylinder wall clearance should be?
Thanks

Speed pro says .0015, I give them .003 for circle track, and have good luck with them.
(I give them a little extra for a whole bunch of reasons)

A good engine builder should also have a Speed Pro book laying on his workbench with this data in it.

your machine shop should be able to measure the skirts and see how much clearance is built into the piston and get a general idea of what they need, and adjust the cylinders from there, and if the pistons are used....this is pretty much mandantory. And BTW if they are used some of the skirts may be colapsed...and if this is the case the piston really needs to be replaced.

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