Hi,Currently running with a pretty much stock blackmax, fitted a os mid sectio along with velocity stacks. As I cant afford to treat myself to a biiger engine Im looking at increasing the HP with what Ive got and would like to get the cyclinder heads skimmed. Heres my questions, I want to take it up to 145 (ish) psi so how do I work out how much needs to come of?Thanks
I have no clue....But be very careful... You are running v-stacks on an engine that runs hotter than most in the pure stock state...You should look at re-jetting carbs to reduce lean condition (if you haven't already). Also look at low water pick-up (if you haven't already)?What you will have even with the above is... A louder engine, that uses more fuel, and probably gain only a few hp at WOT...But if you want my opinion, go with .02-.03 to start. But don't set that in stone and don't hold me accountable...Maybe we will get Dhadley on here to chime in or CLams...
Mercury blackmax 150 cylinder head skiming??
Currently running with a pretty much stock blackmax, fitted a os mid sectio along with velocity stacks. As I cant afford to treat myself to a biiger engine Im looking at increasing the HP with what Ive got and would like to get the cyclinder heads skimmed. Heres my questions, I want to take it up to 145 (ish) psi so how do I work out how much needs to come of?
Linear Mode
