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Leaking valve covers
Ok what next? I've upgraded the valve covers to the turbo, added silicon gaskets and there still leaking. The leaks seem to be coming from the bolts. any ideas? Motor is a 2.7
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1982 911sc 1999 996 Cab |
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04-11-2006, 01:41 PM
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Location: Westchester County NY
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When you changed the gaskets did you also use new hardware (nuts and washers)? it all should have come as a kit and is recomended
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04-11-2006, 04:56 PM
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Absolutely, used new hardware! Just dumped a bunch of money into it to try and stop the leaks. Got most of them resolved, except the valve covers, they seem to be leaking at the Bolts, not along the sides. Made sure they were properly torqued
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1982 911sc 1999 996 Cab |
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04-11-2006, 05:07 PM
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Does it appear to be the lower bolts only that are leaking?
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04-11-2006, 05:22 PM
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On the right side yes. On the left it the upper.
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1982 911sc 1999 996 Cab |
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04-11-2006, 06:56 PM
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Are the valve covers new?
If not, they could be slightly warped. To avoid draining the oil, jack up one side and carefully stuff in jack stands. Remove the valve cover with a pan to catch a small amount of oil. Check the mating suface carefully with a straight edge and strong light. Be very critical. If the covers are warped they can be resurfaced by any competent auto machine shop. Of course if both covers are warped you will need to drain the oil.
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DOUG '76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's. '85 911 Carrera, stock, just painted, Orient Red |
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04-11-2006, 09:07 PM
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Fix any warped covers and then use good gaskets. I've found the best to be the green gaskets with the bead of grey silicon around the perimeter. New hardware not required. The seal is at the gasket not the hardware. Don't over tighten the nuts.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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04-13-2006, 06:53 PM
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JOT MON ABBR OTH
Join Date: Feb 2001
Location: USA
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What torque value did you use? Overtightening is as bad as than under tightening. Also, have you checked your rockers? I'm going brain dead here, but if the pin the rockers ride on is not properly installed or if they have worked loose then they will leak oil and it can come out from the same location. Please don't ask how I know...
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David '83 SC Targa (sold  ) MANLY babyblue honda '00 F250 7.3L (MINE!)'15 F250 Gas (Her Baby) '95 993 (sold )I don't take scalps. I'm civilized like white man now, I shoot man in back. |
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04-14-2006, 09:49 AM
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Air Medal or two
Join Date: Jul 2003
Location: cross roads
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That's what I was going to say too, check them rocker shafts as they are more guilty of leaks every where and seem to get away with it.!! and if they do not have the "seals stand on your head and put em in, then you will smile !!
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D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
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04-15-2006, 01:38 PM
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Are you sure it is not the oil return tube(s) seal? Can leak at the head and run down to the bottom of the valve cover. Looks like a cover leak.
Best, Ron |
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04-18-2006, 04:40 AM
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Make sure you removed all the old gasket material. a tiny spec of leftover material will cause a leak.
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1967 911R "Clone" Race Car 2.0 & 2.5 Twin Plug 1984 Mercedes 500 SEC 1991 Mercedes 420 SEL 1992 Ford F-350 Dually 28' Pace Trailer |
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04-18-2006, 07:39 AM
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1967 Porsche 911R Replica 2.3 Litre Race
1967 Porsche 911R Replica 2.2 L Race Engine
