porting vintage fv heads

[bobc]

Can anyone tell me how to port a vintage head or where to find information as to styles used. Most books show austins, fords and others but not vw;s

[hardingfv32-1]

You are a serious dreamer if you think you can improve the flow of a FV head with porting. If you look at work from the major FV head porting specialist over the last 30 years, you will find a surprising lack similarity. Wouldn't you think that after 45 years some features would be etched in stone? You will fined very few. I call it my Darwin theory. I say the heads were designed just right by VW.

The valve job is 75% of the performance gain that you get from working on the heads.

Brian

[brian]

I won't quite agree with Brian since I know that porting will get you more than 25% but that said, in the absence of dozens of heads, most of which will get thrown away, and a flow bench, you can do one of two things. Find some killer heads and carefully copy them. Hint: use calipers and find the choke. After a lot of time and money, this is what I learned at a professional cylinder head school. Or, just remove the guide bosses and do a good valve job that will get you a decent regional head.

[hardingfv32-1]

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Brian