[TR] TR6 Oil Consumption

[Randall]

> My 74' TR6 consumes one quart of oil every 200 miles. My 
> compression ranges from 165 to 180 per cylinder.  Does this 
> indicate that my valve guides are worn. When I first crank 
> the engine after it has been sitting over night the engine 
> does not smoke. However, when I accelerate from a stop I 
> notice some fumes in my rear view mirror.

Typically, leaking valve guides are more noticeable on deceleration.  The
classic symptom is a puff of blue each time you shift, as the momentarily
high manifold vacuum pulls more oil past the intake stems.

Hard to be sure from your symptoms, but I would be looking for oil being
carried through the crankcase ventilation system.

Does your engine by any chance have the external oil supply to the head
installed ?

Randall