euro piston question

[slowfire]

I recently purchased a set of used euro pistons from a member. He seemed pretty repeatable. But for my piece of mind how do you tell they are true 9:7:1 ? I checked the number inside the skirt but i see that number also showsfor the short skirt weight reduction pistons also. Any help or pics to compare will be a great help . Thanks

[Som]

This page has the various piston dimensions you can use to confirm.

http://www.e30zone.net/e30zonewiki/index.php/M20

Som

[digger]

post some pics, the valve reliefs are deeper and the skirts are long

here is a new one i have laying around

[Cabriolet]

Digger, have you seen the M20B25 9.4:1 ones? if so how hard are they to come by?

[raudonis]

There you go ;)