Haven't seen this one before

[Brad Roberts]

Blue,

let me know what you need. I have a few orphan heads with no cracks.



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[BYprodriver]

Originally Posted by Brad Roberts

Blue,

let me know what you need. I have a few orphan heads with no cracks.



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A guy on Rennlist is looking for a 4-6 cyl. 3.4 head to replace a cracked 1 also.

[Brad Roberts]

The one good 3.4 head I have has damage on the exhaust cam journal (first mounting point) We are working on a honing bar so we can weld up the 4-5 heads we have with damage in this area.



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[Brad Roberts]

He should sell his one good 3.4 head and install 3.2 heads. Same casting, same valves, small combustion chamber. I believe it is 1 point higher on compression (and all these engines read lower than Porsche published) from what I have found..



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[BYprodriver]

Originally Posted by Brad Roberts

He should sell his one good 3.4 head and install 3.2 heads. Same casting, same valves, small combustion chamber. I believe it is 1 point higher on compression (and all these engines read lower than Porsche published) from what I have found..



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what about exhaust bolt pattern?

[Brad Roberts]

I have to be careful, we make adapters for everything in house, so I don't worry about that stuff, but should be more clear when speaking in public

Like.. CaymanS intake adapters for 3.2 heads



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[Brad Roberts]

This was damaged during install...




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[BYprodriver]

Originally Posted by BYprodriver

what about exhaust bolt pattern?

Looks like they are the same you just need to drill & tap threads for the heat shield mounting bosses & a few on the intake side too. Thats how they use the same head casting.