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*AzCivic* · 05-03-2003, 12:19 AM

Here: http://www.c-speedracing.com/howto/c...c/compcalc.php

Play with this, notice that if you increase the bore(by a few mm's) and leave everything else the same your displacement increases. Also notice that if you increase the bore and leave the piston dome height/dish the same the compression will jump aswell. So to get it back down to normal you'll have to get pistons with less dome displacement(or deeper dish), but at the same time the head volume will increase(you gotta bore the head to match up with the sleeves, which will help unshroud the valves, a good thing) which might cancel out some of the compression increase. The shop that does the resleeve will be able to give you exact answers.

You'd still get GSR pistons they would just be oversized, most piston manufactures should have them.

05-03-2003, 12:19 AM	#21
AzCivic Moderator Join Date: Feb 2002 Location: Az Age: 43 Posts: 3,804	Here: http://www.c-speedracing.com/howto/c...c/compcalc.php Play with this, notice that if you increase the bore(by a few mm's) and leave everything else the same your displacement increases. Also notice that if you increase the bore and leave the piston dome height/dish the same the compression will jump aswell. So to get it back down to normal you'll have to get pistons with less dome displacement(or deeper dish), but at the same time the head volume will increase(you gotta bore the head to match up with the sleeves, which will help unshroud the valves, a good thing) which might cancel out some of the compression increase. The shop that does the resleeve will be able to give you exact answers. You'd still get GSR pistons they would just be oversized, most piston manufactures should have them.