Re: Re: Valve guide seals

Posted by Gaspump on June 03, 2004 at 13:45:02 from (65.140.1.178):

In Reply to: Re: Valve guide seals posted by Dell (WA) on June 03, 2004 at 10:45:31:

How's the weather on the other Coast? Our over a month long drought was broken last evening with 1-3/4" of rain, raining out now so I shut down work on the '52 and am chilling out to celebrate the onset of the summer rainy season!

Not bad reply, but just a little flawed.

1) That book was printed anywhere between 1953-64, is indicative of that time and re-printed many times since without revision.
2)I may ask which is prevailing force here? Intake vacuum or exhaust gas pressure. If crank case gasses can be pulled in can't exhaust gasses be pushed into the crank case? I say one is as bad as the other, maybe leaning a little to saying heavily contaminated exhaust gasses are the worse, they just remain and can't get burned as in the reverse situation.
3)Simply not correct, never seen a burned one yet! Water jacket is around the guides too, how can the block temp be that radically different from intake to exhaust guides? Check it out!
4)Easier to count to eight than four? Strange rationality, and why toss in 4 for free if not intended for use.

Also, I previously did not mention that I have worked on a few early engines with split guides and mushroom valves. Interestingly, the valve guide seals are a real help here too. These guides must be kept in original pairs and guess what works just perfect to hold the pairs and valves together so as not to get mis-matched? You guessed it, the valve guide seal! The seal is also is a great helper for easier installation into the block.

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