yes i need to know what pistons with reliefs for 4 valves means? I have a 93 cx hatch and i am trying to do a mini-me swap and BauleyCivic said a cx has to have pistons with reliefs for 4 valves. WHAT EXACTLY DOES THIS MEAN????????

 

I believe it's having dishes on the piston so the valves don't hit the piston.

 

it should have little half-moon shaped cutouts on the top of the pistons... 4 on each piston. Those are the reliefs.

 

ok so i will need to get more piston so the valves on the z6 wont hit the pistons on my cx block? Oh Ok Thanxs!

 

reliefs are indention in the pistons so the valve wont hit. B7 pistons have some reliefs in them and z6 ones just have pretty good dish in them. I have no idea what the cx ones are like