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Re: A12 Valve Seals |
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Home away from home  
Joined:
2010/4/27 11:04
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I know what you mean because when we rebuilt a mates L28 he had the spring clip retained seals - where as I have a shroud type one.
Having said this, when idling you can see orange flashes through my glass spark plug I use to tune the idle circuit. The proper color should be an oxy torch blue and orange flashes indicate oil burning. At idle it creates a high manifold vacuum so what I thought is that my valve stem seals are worn...but if in fact my A12 uses shroud type seals (that cannot wear out) maybe my valve guides are worn?
How else can oil get into the cylinder under high vacuum? How much wobble should the valve have when the spring is off and I can wiggle it by hand?
Having said this - can I install the "proper" (positive seal type) valve seals on a head that originally ran shroud type seals?
Posted on: 2010/5/22 1:52
Edited by diymark on 2010/5/22 2:23:49
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