I have known a few people who have machined a very small amount off the cylinder head surface. If any significant amount is milled, the inside of the combustion chamber must also be machined the same amount, else the cylinders will not allow the mating surface to contact the head gasket as firmly as is needed.
What is normally done instead is to use a welder to add fresh aluminum to the pitted mating surfaces, then machine back down to original specifications. This is what is done with most aftermarket rebuilt heads, and often is done by local machine shops as well. I had a set done by Archway Auto Parts in St. Louis (a VW specialist) and was very satisfied with the results.
Bill www.geocities.com/yosemite/gorge/1706 |
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