TR2/3/3A TR3 oil pressure relief valve

[prb51]

I'm wondering if someone fiddled with the filter relief valve at some point or it's just cold and oil viscosity.
I live off of a highway a few miles down the road and even though I warm her up sometimes I have to get on it (dirt road leads to a two lane with 65 mph limit so folks are going 75) when a car crests the hill.
She'll climb past 70 psi some almost to 80 psi.
This only happens when the oil is still not warmed properly and I was wondering if the relief valve just can't handle the cold oil and rpm's or someone earlier messed with the set screw.
What do ya'll think?
After the oil is warm 70 seems to be the limit.

 

[TR3driver]

The relief valve operates over a range of pressures, it doesn't instantly go wide open at 70 psi. So I'd say what you are describing is perfectly normal with a tight engine and fairly heavy oil.

I've pegged the gauge without apparent ill effect. (Back when I was using straight 40 weight instead of 20W50.)

 

[prb51]

Thanks, good to know, but I'll try not to peg the gauge.

 

[tdskip]

After the oil is warm 70 seems to be the limit.

Oh man, this is the kind of "problem" that I'd love to have in my TR3.

Sounds like you did a great job when you did the bottom end work. Good going!