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**Goat Blower** · 10-10-2007

No special prep except you want to give the machine shop your pistons so they can measure them accurately. Each type of piston has a different expansion rate and needs a different piston to wall clearance. It's not as simple as just boring .020" unless you're dropping in plain old mitsu pistons and don't care.

10-10-2007	#3
Goat Blower aka Goodbye Asteroids Champion! Beach Squirter Champion! Join Date: Oct 2003 Location: under the car Drives: Taylor Made R15 Posts: 7,765	Re: question about head and block.. No special prep except you want to give the machine shop your pistons so they can measure them accurately. Each type of piston has a different expansion rate and needs a different piston to wall clearance. It's not as simple as just boring .020" unless you're dropping in plain old mitsu pistons and don't care. __________________ 2009 Corvette Z51-SOLD 1992 Mitsubishi Eclipse GSX-SOLD 2013 BMW Z4-Current summer hooptie 2017 GMC Yukon-Current winter hooptie