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Valve seals
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http://www.clubcobra.com/forums/nw-cobra-club/102477-valve-seals.html)
| Dale McBain |
01-31-2010 08:51 PM |
Valve seals
Has anyone had any experience with Lubegard or similar rejuvenating valve seals?
Dale McBain
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| northshoreboyz |
02-01-2010 04:19 PM |
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!
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| Dale McBain |
02-01-2010 05:47 PM |
Valve seals
Can you recommend a valve spring compressor the will work with the heads on the engine?
Dale
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| northshoreboyz |
02-01-2010 06:10 PM |
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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| Dale McBain |
02-01-2010 06:18 PM |
It is a 351W with single springs and flat inner coil damper spring.
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| Wbulk |
02-01-2010 06:59 PM |
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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| northshoreboyz |
02-02-2010 09:16 AM |
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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| W2zero |
02-02-2010 06:38 PM |
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.
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| Silverback51 |
02-03-2010 06:26 AM |
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| ratsnst1 |
02-03-2010 07:34 PM |
just wondering
Quote:
Originally Posted by Dale McBain
(Post 1024388)
Has anyone had any experience with Lubegard or similar rejuvenating valve seals?
Dale McBain
|
How did you know that you need to replace your seals, what was your engine doing, and did it work, thanks. |
| Dale McBain |
02-03-2010 09:37 PM |
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
|
Quote:
Originally Posted by Dale McBain
(Post 1024388)
Has anyone had any experience with Lubegard or similar rejuvenating valve seals?
Dale McBain
|
Nope, but if seals get brittle not much anything can do except replace them |
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