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01-31-2010, 08:51 PM
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CC Member
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Join Date: Mar 2007
Location: Lake Havasu City,
AZ
Cobra Make, Engine: Superformance
Posts: 316
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Not Ranked
Valve seals
Has anyone had any experience with Lubegard or similar rejuvenating valve seals?
Dale McBain
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02-01-2010, 04:19 PM
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CC Member
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Join Date: Jan 2010
Location: Port Orchard,
wa
Cobra Make, Engine: classic roadsters/60 over 429 scj
Posts: 5
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Not Ranked
I've used lots of different lubegaurd products but mostly in working high mileage applications.If your valve seals are hard,worn or torn a oil additive wont help you.Valve seals are very easy to replace though and will without a dought fix the problem.
good luck! |
02-01-2010, 05:47 PM
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CC Member
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Join Date: Mar 2007
Location: Lake Havasu City,
AZ
Cobra Make, Engine: Superformance
Posts: 316
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Not Ranked
Valve seals
Can you recommend a valve spring compressor the will work with the heads on the engine?
Dale
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02-01-2010, 06:10 PM
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CC Member
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Join Date: Jan 2010
Location: Port Orchard,
wa
Cobra Make, Engine: classic roadsters/60 over 429 scj
Posts: 5
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Not Ranked
Maybe I missed it somewhere, What kind of engine are we talking about? The easiest cheapest one that will work on most anything domestic is one that has 2 forks and a screw knob on top.You just put the two forks into the spring as low as possible and screw down the spring compressor,Remove the keeper and unscrew.Any part store will have these and they dont cost much.
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02-01-2010, 06:18 PM
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CC Member
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Join Date: Mar 2007
Location: Lake Havasu City,
AZ
Cobra Make, Engine: Superformance
Posts: 316
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Not Ranked
It is a 351W with single springs and flat inner coil damper spring.
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02-01-2010, 06:59 PM
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CC Member
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Join Date: May 2009
Location: American Fork,
Ut
Cobra Make, Engine: 66 Cobra
Posts: 930
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Not Ranked
I use the KD 2078. Put the piston at TDC on the compression stroke for the set of springs you are working on. Use an air adapter for the spark plug hole to put air in the cylinder, to keep the valve from dropping into the cylinder. Make sure it's it gear with the wheels blocked to reduce the chance of the air turing over the engine. If you just remove the plug on the cylinder you are working on that reduces the chances of the air turing over the engine. Yes, take it out and in gear to rotate the engine to work on the next cylinder. Compress the spring, remove the keepers, remove the retainer and spring and replace the seal. Don't accidently push on the valve stem. You could cause the cylinder to lose air and the valve to drop. Move on to the next one.
That's the way I have always done it.
Wayne
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02-02-2010, 09:16 AM
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CC Member
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Join Date: Jan 2010
Location: Port Orchard,
wa
Cobra Make, Engine: classic roadsters/60 over 429 scj
Posts: 5
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Not Ranked
One last step that I always do is after the seal is replaced and the spring is put back on I use a rubber or plastic hammer and gently hit the top of the valves a few times to seat the keepers into the valves.
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02-02-2010, 06:38 PM
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CC Member
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Join Date: Apr 2002
Location: Ruston, overlooking scenic ASARCO,
wa
Cobra Make, Engine: 64 smallblock Fairlane
Posts: 116
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Not Ranked
Back in the day, and still if no compressor is available, stuffed a yard of sash cord down the spark plug hole then rotate up until it was nice and tight against the valves, then pop the keepers with a hammer and socket, replace the seals then use the lever action spring compressor to reassemble. Simple and quick.
__________________
60 clicks West of Chu Lai
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02-03-2010, 06:26 AM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,029
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Not Ranked
Hello Dale,
Here is one from NAPA. Pretty simple and cheap.
http://www.napaonline.com/Search/Det...094_0006393020
__________________
John Hall
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02-03-2010, 07:34 PM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine:
Posts: 327
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Not Ranked
just wondering
Quote:
Originally Posted by Dale McBain
Has anyone had any experience with Lubegard or similar rejuvenating valve seals?
Dale McBain
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How did you know that you need to replace your seals, what was your engine doing, and did it work, thanks. |
02-03-2010, 09:37 PM
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CC Member
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Join Date: Mar 2007
Location: Lake Havasu City,
AZ
Cobra Make, Engine: Superformance
Posts: 316
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Not Ranked
The rope trick of I have heard about from aircraft engine mechanics. Thanks for the advice, it is very much appreciated.
Bye for now!
Dale
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02-03-2010, 10:51 PM
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CC Member
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Join Date: Jan 2009
Location: Woodinville,
WA
Cobra Make, Engine: FFR
Posts: 201
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Not Ranked
Quote:
Originally Posted by Dale McBain
Has anyone had any experience with Lubegard or similar rejuvenating valve seals?
Dale McBain
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Nope, but if seals get brittle not much anything can do except replace them |
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