Milled Head????

[eagle06]

What exactly is done to the head?What is the advantage?Can it be done with out a port job or big bore?

[Benny]

what is done with the head is the base of the head is milled to create more compression. the advantage = more compression thus giving more low end grunt and yes it can be done without a port job

[BlueDiablo]

It makes your combustion chamber smaller. Think of a race engine. They are always talking about compression. I know a guy that races a Big wheel that cant pull start his engine, Even catching it in gear wont work because his back tire will just slide. They actually have to use a Roller starter. Its basically an impact wrench and even then sometime they have a hard time starting it. But more compression equals more power just like benny said.

[eagle06]

Thanks guys I appreciate the help

[flotek]

there is a limit to it though obviously ...your squish clearance has to be right and the
static compression wil l actually fight" (for lack of a better word) the piston and create less rpm and harder on your crank bearing and rings.

[AHood]

how much material can be milled off of a banshee head with out having the squish clearance get too tight? a better method for head mods is turning them in a lathe but thats a problem with mono heads like the banshee. you need a lathe with enough bed clearance so the head doesnt hit the ways either that or use a lathe with a removeable sectioned bed. lathe turning lets you cut the squish band and combustion chamber as well as the head deck/ seal surface.

[spliterofreeds]

how about a blaster, is there a recomended amount to mill the head?

[BlueDiablo]

depends if you want to run race fuel or not.

[spliterofreeds]

no not at all lol