I ordered some forged piston from probe and when i recieved them, the dome lookes huge...

i intentionally wanted 12:1 in my LS VTEC. These things look like i'll be in the 13's, and i want it for a semi daily driver.

The box reads on the piston info:

3.209/ 1.180/ dome top .827

could anyone tell me what this will put me at, setup is a LS block, LS crank, Scat LS rods, B16 head, OEM gasket.

thanks in advance.

 

http://www.zealautowerks.com/

 

what to i put under compression hieght, i've got thr dome. it looks pretty close to a PCT, so i'm taking it's gonna be pretty high

 

does it say the dome, in cc's?

 

no it's doesn't.....


just says 3.209/1.180/ dome top .827


then 1302. 11377.50

which i think is the part number but for some reason the website ain't pulling up.

i really need to know before i start throwing these in.

 

12.23:1

 

thank me later

 

wow thanks brother.

for some reason those pistons look like damn mountains compared to my p30s lol.

.50 overbore won't change compression right?

 

you guys completely sure?

one of the local shops is saying 13:1 +

i just wanna be sure, if it's in the 13's the hell with that, i still wanna be able to daily drive it everynow and them.

 

0.5mm overbore actually will change the compression a bit--if you got say 12:1 at 81mm, with the same dome size you would probably be at 12.3 at 81.5mm.

 

Actually you would be at 12.57:1