Originally Posted by
Rob_DOHC
Sorry, good point. I really meant retarding the timing to with in reason. CR and advance is still a bit of a compromise as far as i can see. As you have said above, lowering the compression ratio and advancing the timing will reduce egt's, but too much and you just loose power/drivability and make for a generally less efficient engine.
Its why you go to a recognised engine designer not just a builder to get an engine designed to what you as the driver require. It aint cheap it aint going to happen overnight but hell is it worth it.