What's that?
It's hard for me, as a German, to understand all bits of the discussion. I like Jake's opinion, as he shows the US side of Type 4 tuning. If we were all the same opinion, why would there be messageboards? We would all use the same parts from the same producers, am I wrong?
My opinion is, even if a Type 4 has a 23% bigger cooling surface, use a Porsche style cooling! I just say that, because of two very important things you all miss, the reason for that is maybe, that you compare the Type 4 with the Type 1.
1.The high copper part of Type 4 heads makes a need for cooling the heads more, because they flex and bend more than any other aircooled head, I know.
2.The exhaust of a Type 4 sits not on the sides, it's on the bottom, where air is hard to find for a good port cooling. Try finding hot spots on your Type 4 with indicator tape, then you know, what I mean!
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