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Registered
Join Date: Mar 2005
Location: Northern CA
Posts: 4,703
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maybe this is covered on other threads...but there does still seem to be confusion re. what is the best seal/guide material combination.. if Chris/John W./ Henry say to not use the white ones..then I would say change them now.... it would be nice to know the original manufacturer and part number for different types of seals and guides..so we can help keep this straight in the future.. and have a "clean" hand off when someone asks the question again...
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Sold: 1989 3.2 coupe, 112k miles |
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08-16-2006, 07:44 AM
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HAS THIS VALVE STEM SEAL ISSUE EVER BEEN RESOLVED???
i'M GATHERING PARTS FOR MY TOP END JOB AND DON'T NEED TO BUY MULTIPLE SETS FOF OIL SEALS. KEITH EPPERLY 87 TURBO LOOK CARRERA CABRIOLET SLANT NOSE |
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12-30-2006, 11:09 AM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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We do all of our heads in-house and have used the latest Viton seals for many years with excellent results. Of course we only use our own phosphorus-bronze guides that are hand-honed to fit.
The only time I use the white teflon ones is on the exhaust side on 930's. These permit a little more oil down the guide and I think those hot-running motors need the extra lubrication (a la 935).
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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12-30-2006, 01:12 PM
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1987 Porsche 911 slant nose cab 3.2 liter 
