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Aluminum cylinder head mating surface

9K views 27 replies 10 participants last post by  PHWOARchild 
Abrasives are well known to destroy engines. Care is needed. in this case an abrasive nets you nothing but hte risk of getting it somewhere you don't want it it higher than the need for it.
I'd send it as is and worry about whats for lunch.
 
Dudes......The gasket manufacturer has specs on the RA finish for that paticular gasket. In my shop, or any shop Ive seen, alloys don't fare well with abrasives. they tend to be sticky, so surface finish is completed with the tooling, HSS usually.
 
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