I am trying to get a tangeable feeling for all the head variations out there. I have a M130 with dual carbs and I have seen a few heads with siamese exhaust ports on the cylinder head. One in particular was mentioned to be a "high compression" cylinder head. Is thee any correlation between siamese exhaust ports and higher compression in the heads??
Anyone have head pics you can share that show the ports and an identified cylinder head number?? (Or at least vehicle description)
Thanks in advance!
