robert weeks wrote:
> cylinder #1 no oil 190lbs/psi oil 265lbs/psi
> #2 no oil 175lbs/psi oil 275lbs/psi
> #3 no oil 170lbs/psi oil 265lbs/psi
> #4 no oil 185lbs/psi oil 270lbs/psi
Both numbers seem high indeed.
My guess is:
No oil readings are high because you have a slightly milled head
or non-standard pistons, somebody was likely going for more
horsepower. Could be a good thing.
Oil readings are VERY high because you are putting in quite
a lot of oil, perhaps more than you should be for the test. Remember
that in a 1275cc engine with approx 10:1 compression the combustion
chambers are in the order of 30-40ccs, which is quite small. Adding
even 10ccs of incompressible oil can make the compression extremely
high for the remaining space.
--
Trevor Boicey
Ottawa, Canada
tboicey@brit.ca
http://www.brit.ca/~tboicey/
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