I reciently bought a b18 block that was decked 0.025. Anyone know how much this effects my comression?. Also when shipping the block off to get sleeved. Does anyone know if the block decking will effect the sleeves as well? I'd think it would. I was gonna run 8.8 wiesco pistons hoping i'd be up around 9:1.

Captain, jdog

 

http://www.c-speedracing.com/h...c.php
Just fill in the blanks at the above site but reduce the head gasket thickness by .025" and you can see your compression change. If you have cut your block by .025 already, the pistons should be sticking out of the block slightly.