[Tom Vaught]

At some point Charlie, the compression ratio limits your boost level that you can run with available fuel. You seem to be on a Max Boost quest.

The fact that you were running 35 psi with a 4 cylinder engine and had good durability and now assuming the same guidelines (except for fuel economy) what would be the benefit of going 3 full points higher in compression ratio with the same fuel, a V-8 engine, and twin turbos? And thinking that it would not have combustion stability issues with the higher static compression ratio. Corvettes tried that deal in production with direct injection and would up running very moderate boost because it was a street car.

Tom V.

[charlie66]

Originally Posted by Tom Vaught

At some point Charlie, the compression ratio limits your boost level that you can run with available fuel. You seem to be on a Max Boost quest.

The fact that you were running 35 psi with a 4 cylinder engine and had good durability and now assuming the same guidelines (except for fuel economy) what would be the benefit of going 3 full points higher in compression ratio with the same fuel, a V-8 engine, and twin turbos? And thinking that it would not have combustion stability issues with the higher static compression ratio. Corvettes tried that deal in production with direct injection and would up running very moderate boost because it was a street car.

Tom V.

I'm only thinking of this because I have my motor in my Ventura that is built with all the good stuff but has flat tops which brings it to 11.3 to 1. So i was asking because it would be really easy to just change the cam and not have to go and take the whole motor apart for new dish tops. Maybe I could use a thicker head gasket ? You know me , I like to experiment with things Tom.. If you think it will be a time bomb then I wont even think about anymore .. Just wanted to see what everyone thought of this idea..