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KTL KTL is offline
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Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,643
51mm is the overall length. Porsche measures/specifies them differently in the parts diagrams. The inner anchor length is omitted and they state that the outer length to fasten the valve cover is 28mm on the upper/intake valve covers and 35mm on the lower/exhaust valve covers.
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Kevin L
'86 Carrera "Larry"

Last edited by KTL; 08-06-2015 at 10:00 AM.. Reason: provided lengths for upper vs. lower valve covers
Old 08-06-2015, 09:59 AM
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