Xs Head Skim

[Guest rmilbank]

Hi all, just a quick question. Whats the maximum safe skim you can do on a standard untouched XS head. Im purely looking for the best CR i can get without swapping pistons or having to make cut-outs. Will get fuelling/ignition set up accordingly afterwards.

 

Thanks in advance

 

Rich

[Mark205 1]

I had 30 thou taken of my xs head, but the machinest/engine builder said he could take up to 40 thou or 1mm off before i started getting clearence problems.

I noticed a difference with 30 thou taken off.

Edited April 8, 2009 by Mark205

[Rippthrough 98]

1.1mm off mine but with some chamber work, any more and you'll struggle to get the belt tensioned properly.

[snillet 1]

1.1mm off mine but with some chamber work, any more and you'll struggle to get the belt tensioned properly.

 

Use the TU1 belt maybe ?, it´s 4teeth shorter or something like that i think, maybe that is too short....