Mercury blackmax 150 cylinder head skiming??

G

gashead

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Joined
May 18, 2006
Messages
2
Hi,<br />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?<br />Thanks
 
K

KCLOST

Commander
Joined
Jun 22, 2002
Messages
2,095
Re: Mercury blackmax 150 cylinder head skiming??

I have no clue....<br /><br />But be very careful... You are running v-stacks on an engine that runs hotter than most in the pure stock state...<br /><br />You should look at re-jetting carbs to reduce lean condition (if you haven't already). <br />Also look at low water pick-up (if you haven't already)?<br /><br />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...<br /><br />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...<br /><br />Maybe we will get Dhadley on here to chime in or CLams...
 
G

gashead

Recruit
Joined
May 18, 2006
Messages
2
Re: Mercury blackmax 150 cylinder head skiming??

Hi Kclost,<br />Yeh I have re-jetted the carb and fitted a cle box so I think Im ok in that area.<br />Thanks for the responce
 
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