Head gasket question

[Coady]

Been thinking... put my head gasket on last night and it did look a little large for the bore with the 2mm gap around the edge - 73mm for 69mm bore...

Put it back together and was gonna put the valve cover on when I thought I should sleep on it (probably should have stopped a little sooner..).

Worried now I may lose some compression? Am I worrying for nothing?

Well I've calculated that this will add about 1.8cc overall, assuming that the stock gasket is exactly 69mm wide and that the head gasket is 1mm thick (it was before it's torqued down). This would change compression ratio from assumed stock of 8.7:1 to 8.55:1.

I'm thinking this is negligible....

[motocycle shawn]

size

i had to buy a new one for my 1166 kit. stock was way to small lol

[rapidray]

Shawn, the stock 1150 head gasket works REALLY well if you just open it up a little for an 1166! Ray.

[chef1366]

I sold a guy an 1150 gasket that Ray cut and it worked a charm.
Not to say I had my doubts.