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Tom Oxner Tom Oxner is offline
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Join Date: Nov 2006
Location: Conway,AR
Posts: 1,180
Twin PLug Heads and Air Injection

I am thinking about twin plugging my 85 930. A local Porsche tech mentioned that he had noticed cracking in twin plug heads that had the air injection ports in the exhaust side-even when the holes were plugged. Has anyone else noticed this problem?

While examining my engine during disassembly, I noticed that there is certainly not much room on the exhaust side to insert the second plug-It looks really close.

Thanks for your help.

Old 12-07-2007, 08:07 AM
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