RE: valve mystery

[ntolerance <ntolerance@xxxxxxxxxxx>]

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Actually, Chevy guys would know all about stuck valves. Seriously its 
quite common in the late 70's to mid 80's (probably more years as well) 
to stick valves. (boat anchors)I have seen 350 chevs run pretty well 
with a stuck valve. Really depends on how far its stuck open.

The only explanation I can give you is simply the engine configuration. 
The long crank (length not stroke) may have helped mask the fact that 
the valve was sticking open. 

Example, years ago a friend of mine has an early 50's boo-ick with a 
straight 8. the car ran wonderfully, but it seemed to lack power. After 
checking the usual culprits, (points, timing, tune up, carb, ect) we 
really werent coming up with anything. So, we tried a compression test, 
(thinking all 8 were low)well, cylinders 7 and 8 (back two) had ZERO 
compression. Let me reiterate, this engine ran soo smooth a glass of 
water set on the air clear wouldnt have vibrated. After a dissassebly, 
we found that the journals for 7 and 8 had NO RODS OR PISTONS and the 
bores were filled with some sort of grout/concrete mix.

Depending on how far the valve stuck open, the cylinder may still have 
added to the output of the engine, but certainly not 100%. Sort of like 
"feathering" a wounded air plane engine. (prop type)

Sort of a "planets all in alignment" scenario.


Doc.

Best i can come up with.



Robert neal zimmerman wrote:
> 
> well i was hoping fora straight answer to my question, i see i will have
> to go find a chevy guy and ask him!
>    neal zimmerman, eugene oregon
> 
> -- 
> http://www.fastmail.fm - Access your email from home and the web
> 

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