ok, here's the drill!
exhaust valves run hot it is their nature. having gobs of oil running down
the stems is not a bad thing! having it create blue smoke burning in the
exhaust system has no bearing on the performance or condition of the spark
plugs. a loose exhaust valve guide is not a bad thing! real loose is bad
but tight is not the hot ticket either! the intake valve , is another sort!
oil going down that guide will effect the plugs and the burn in the
cylinder. all the performance guys wil ltell you a tight motor takes for
ever to break in and will not turn high rpm's quickly due to the tight
tolerances and possibility of lubrication starvation at certain places due
to higher heat from friction at operating temperature with tight tolerances.
cylinder heads alaso follow suit in this area. a real tight extremly close
toilerance guide to stem set up will operate by hand at room temperature but
might sieze at operating temperature and or gaull u the valve stem or guide
with a possible end result of siezing the stem in a guide. this set up will
not burn or "use" oil. but! a loose set up will run fast right out of the
box with little reguards to "proper break in". we never put seals on the
exhaust. rule of thumb is"lubrication at a very high temperature place is
a good thing"! lubrication fouling the plugs is not a good thing.
chuck.
:)
----- Original Message -----
From "spridget" <spridget63 at comcast.net>
To: <spridgets@autox.team.net>
Sent: Sunday, December 15, 2002 8:35 PM
Subject: 1275 valve seals
> I am currently working on a 1275 cylinder head and noticed that only the
intake valves have oil seals. The catalogs show this to be correct. My
question is, should I replace the seals as they were or is there an
improvement such as installing seals to all valves that would be better? It
seems that adding seals to the exhaust would not be difficult. The engine
is stock, I just can't figure why there would be not be seals on all valves.
TIA.
>
> Dan Walters
> '63 Sprite
> '74 Midget
> Brick NJ
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