98ctr

how much more compression does flat face valves add. I know its not much, but I was wondering if anyone actually knows a value. thanks.

turbohf

i will throw out a guess of .25-.50 of a point...

why bother? just get the dished ones..its a turbo motor anyway...if its a all motor setup and your trying to get every little HP it seems like a great idea sence its not putting the head closer to the pistons (or the other way around)...

98ctr

its not for my motor. its for a n/a motor.

Ravage70

some guy selling them on ebay a while back claimed it was .3
Its really not much but if u want to get the most out of what u got go for it.

Random Hero

The valves you have stefan on a 10:1 motor it raises it .2 on a 12:1 motor its .4 ... thats what omni told me.