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120 HP/Liter is all I ask
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Which Valve Stem seal is best?
Of those shown below which is your favorite valve stem seal?
Last edited by Cupcar; 03-23-2009 at 10:59 AM.. |
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03-23-2009, 10:57 AM
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abit off center
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The Viton seal on the left
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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03-23-2009, 11:02 AM
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120 HP/Liter is all I ask
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For both street and race engines?
Do you like to run on all 12 valves or just intakes? |
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03-23-2009, 11:50 AM
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Registered
Join Date: May 2003
Location: Laguna Beach, CA
Posts: 1,405
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The Votes are in:
Teflon: Walt (Competition Engineering), Henry (Supertec), EBS, Ollie's Viton: Steve W (Rennsport), Bob? (Anchor Atlantic) So Teflon defeats Viton 4 to 2! This is from my own research (aka search button)...
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68 911L |
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03-23-2009, 12:17 PM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,466
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IMO, the viton is too good at keeping the oil out, which can result in prematurely worn guides and valve stems, and the resulting seat wear from the valve wobbling around. some folks remove the spring.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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03-24-2009, 01:10 PM
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Registered
Join Date: Mar 2008
Location: St.Louis MO
Posts: 447
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I have a full set of Teflons still in bag from pelican I'd like to get rid of; if someone wants them I can drop them in the mail for $15 or $20 or something.
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1989 Carrera 3.2L in 993 bodywork |
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04-15-2009, 10:28 PM
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1969 and 1986 Porsche Targa and Coupe 1720cc and 3
