I would be aiming for at least 10:1 comp on iron heads, hence why I was asking how much the 98cc heads can be skimmed down.
If its not feasble to acheive this compression with these heads I will most likely go with alloy heads and aim for 11:1. This is what I was aiming to do when I thought I had the original 455 112cc heads.
Cheers
John
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