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lucittm lucittm is offline
Manassas, VA
 
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Join Date: Apr 2007
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Don,
You answered your own question my friend. If you can move the remaining valves as you did on the #3 exhaust, then you have to remove that head as well. I would think this is a fairly quick test. Walt at Competition Engineering told me that exhaust guides fail more often than intake guides, which makes sense.

He also told me that the material that Porsche used for guides in many engines was metallurgical junk. Perhaps you only got one of those in your rebuild. I don't think you can tell by visual inspection.

Good Luck,
Mark
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1991 964 Polar Silver Metallic Turbo Coupe
Old 11-04-2008, 08:35 AM
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