Hello everyone,
I have a 1.8L motor that I want to use for my race car. I’m in a power to weight class (NASA GTS-1) were I need to get about 100hp at the rear wheels, or 115hp at the crank. I’ve got a great performance cam with race valve springs, and a set of 40IDF Webers. I would like to bump up the compression ratio by machining the heads, (I’m a machinist) and without buying a set of pistons.
The stock 1.8 puts out 80hp. + 15% from the cam = 92hp.
My 2 questions;
1- How much do I need to mill off the head to raise the compression ratio per point?
2- How much hp will I get per point? (roughly)
I know that these are not easy questions to answer for the average person, and to get the exact hp has some variables to it, but I’m just trying to get in the ball park.
A little extra hp is better than less as I can always ad a little weight to the car.
Oh yea, please, no suggestions on turbos or other mods that cost money as this is supposed to be a no budget project that can be done with the parts that we have at hand.
Thanks for looking a best wishes…G
My new race car.
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