Hi Cameron,
Hard to listen to someone who can't even figure out which is your first
and which is your last name huh? Sorry about that. I was thinking it
was kinda a cool way to spell Greg. Anyhow here's some more thoughts on
high oil pressure numbers and smoke.
Cameron Greig wrote:
the head was rebuilt 4000 miles ago with new guides and valves so if
this is the cause I will not be happy!!
>>>>Bummer, if that does turn out to be guides/stems maybe you can get the
>mechanic to redo the head or give you a break on redoing it...of course then
>you have to decide if you want the same person to redo it if the first try
>didn't take. I'd be curious to know what they find was the problem if you have
>to revisit the head.
the cylinder head has its own oil supply and the car runs with high
pressure(100lb cold never drops below 70)
>>>>My rebuildt 69 engine(1200 miles on it)in my good TR6 runs about 95-100
>when it's cold on start-up, cruises at 65-70 when warm and sits at 45 when
>idling warm.
I must get hold of another gauge to see if the original gauge is right
or if my pressure return valve is out of adjustment.
>>>>Let's hope it's the gauge or the line from the engine to the gauge (check
>it to make sure there's no kinks or sudden bends). My Bentley says on page
>147 under oil circulation: "Oil drawn from the engine sump by a rotor type
>pump is delivered via a NON-ADJUSTABLE pressure relief valve to a full flow
>type oil filter."
>>>>I'd been looking for info. on adjusting the pressure relief valve on my TR6
>because I thought the cold start pressure was too high but then I found the
>above tidbit and decided I just had to live with it (I'd rather have that
>problem than low oil pressure).
>>>>Your numbers do seem way high and I hope it's the gauge or the oil line
>because the only other thing I can think of is that there might be some
>stoppage (clogged filter, dirt/debris in the press. relief valve spring, etc.)
>in oil circulation somewhere that is causing both the high oil pressure
>numbers and the blowby that you're apparently getting on cold starts. The two
>may be related. I'm don't know if that makes sense in a closed system but
>it'd be a good idea to ask the list re: stoppage possibilities and if that
>could cause both symptoms.
Good Luck
Bud
71TR6 CC57365
71TR6 CC65446
66TR4A CTC57806
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