My new 1994 SeaDoo XP had an aftermarket head on it made by Triton. I am wondering if I should keep the head or put the stock one on. The owner has told me he used it as a racing ski at Triton, Boulder back in the day.
Depends on the squish. Its probobly milled to increase PSI Combustion. When you know what these are, you would use an octane booster & OB gauge to mix the fuel to get the max power it can provide. More improvements mean less engine life span.