Quote:
Originally Posted by Teigen
Haha, I also mainly did it to smooth them out, so the water flows better. but in the end I began porting them a little, as i noticed my cylinder head gasket could handle 1 mm diameter larger size. Did this on both of the blocks 
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that's what I noticed, pull the HG on the block, draw what I've had to retire, and done the same on the head.