Thread: ZZ502 Engine
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04-25-2012 10:33 AM #1
ZZ502 Engine
Umm. So I'm new here... and new to this whole car thing in general. So bare with me.
I've got a ZZ502 motor bored 30 thousandths over to a 509. I want to replace the pistons in it to achieve a lower compression ratio, specifically a CR of 9:1. The CR right now is 13:1.
bore: 4.500"
stroke: 4.000"
rod: 6.135"
piston to deck: 0.015"
piston dome volume: -13.6 c.c.
combustion chamber: 62.0 c.c.
head gasket thickness: 0.039"
so uhh... where should I look to buy new pistons? What company should I go with? What should I vary (i.e. piston dome volume, head gasket thickness, compression height, etc.)?
I got the Skyjacker hydro shocks on and they are as soft as I'm going to get. It still rides kind of firm but better. One of the main issues is the front is about a 1/4 off it's bump stop, the lack...
Stude M5 build