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KAGE
04-28-2011, 12:28 AM
Has anyone had a great deal of r&d time with these heads?
How far can I get them machined and 'rolled over' before I start to weaken the deck face?
What size chambers and valve angle is achivable?
Currntly have 45cc chambers running at 15-1 comp, would like to run a flat top but keep the comp in high 15's if possable ( running alky ) ????
How much outright power can be gained going from a 2.150 to a 2.180 valve ??
Just looking for more power with what I have got.
How much of a camshaft changed would be needed whith all the above changed?

let-r-eat
04-28-2011, 11:22 PM
Bore stroke..........who done the heads originally. Were the heads setup to match your combo already or were they just a cookie cutter out of the box purchase? Has the engine been dyno'd? What ringpack is on the current pistons.

Changing from a small dome to a flat top isn't going to be a world beater change. Especially if the dome was properly determined and mirrors the head properly, especially on alcohol. I would be more concerned with the port shape and size and that it was proper for the combo rpm range. Be skeptical of changing things like valve size without doing proper VJ and chamber and short turn work your wasting good money.

Just trying to help you spend $ wisely.