Head skim
10-26-2009, 10:20 PM
Post: #1
Head skim
how much can be safely taken off of a small port head ?
Thanks, TC

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10-26-2009, 11:33 PM
Post: #2
Head skim
totta Crolla Wrote:how much can be safely taken off of a small port head ?
Thanks, TC

If you use the smallport ECU with its knock sensor and you run on high octane petrol I think you can go up to 10,8-11,0:1 CR. It can be around ,3 - ,5mm, but I strongly adivse to measure the CompRatio with some kind of fluid. google it, and you'll find decent write ups about this topic.
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10-27-2009, 12:03 PM
Post: #3
Head skim
Thanks, do you know approximately how much piston to valve clearance there is on a stock engine ?

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