Merc 2.4 cutting heads question.

[Keaten]

I've got a healthy Merc 2.4
Wanting to get it to 150psi
It's at 130psi now
How much cc change do I need to get it there?
Next question is how much do I remove to change 1cc ?

[rgsauger]

I have the same motor. I think mine are 34’s but honestly don’t remember. 150 ish on all holes.

Jay smith can cut them for you. I think he gets $100 or so and does a good job. It will wake up the bottom and mid. Nothing really on top. You MUST run 93 octane every single tank at 150 psi. Read your plugs and double check your timing.

[KIRCHNER]

I f 1i remember correctly .012 = 1cc i didnt notice any change, besides my wallet being lighter.

[Dave Strong]

33.8cc gave my Bridgeport 142 - 145psi @ 3000' altitude.

Dave

[rock]

My memory says .010 = .7 cc but that is on a 2.5 head.

Rock