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my engine has 10.5-1 compression I want to drop it to 8-1,
This is the problem,
in the head there is only 14cc(litrealy flat), with most of the cc in the piston(45cc)and .030thou of deck hight.
I need 65cc in the piston for the correct compresstion.
Im thinking of using a flat forged piston and run 0.350 of deck hight.
I'm going to run 20psi of boost .

I know people try to keep the deck as low as possable for the squish but is it that important on a turbo motor?

The head is flat the piston is flat no hot spots for detionation!

any thoughts would be much appreciated.
thanks.

FULL STEAM AHEAD!!!

Dave Kawell told me he would run as much deck as needed to get the c/r right ....and unless you are going to run race gas exclusively,better rethink that c/r....

Hi Marco
Just buy some factory 9:1s and machine the dish a little more to get 8:1. A friend of a friend is a running a supercharged 2.1 wasserboxer in Western Australia, Im trying to find out what sort of pistons he is using.
Steve C

Unfortunatly the wasser pistons are not forged and machine the dish a little will weeken them even more, theres no way that there going to hold that amount of boost/hp, I was thinking 7/7.5-1 but wanted to see what people thought.
so is it OK to run that much deck?

JE or Wiseco will build custom pistons for you. They could model off your stock wasser piston and use a tigher, higher positioned ring package, move the wrist pin up, and thereby lower the compression.