[TR] High TR3 Oil Pressure

[Rye Livingston]

I'm running 20-50 with zinc additive, and adjusted my oil pressure so it's about 75 psi when fully warmed up and at freeway speed, 2500 RPM or so.

Rye



On Mar 27, 2018, at 02:42 PM, Randall <tr3driver at ca.rr.com> wrote:

As long as the pressure doesn't go much higher even when cold, I think you are good. But if you're sure your gauge is accurate and you're getting over 90 under some circumstances, I would try switching to a thinner oil, and maybe backing off the oil pressure relief valve just a bit.

That said, I ran for several months (many years ago) with a setup that pegged the gauge on cold start, and it didn't seem to damage anything. I eventually switched from straight 40 weight to 10W30 to solve the problem. And, IIRC, 20W50/after 30,000 miles or so.
-- Randall

On 27 March 2018 09:41:29 GMT-07:00, William Brewer <billbrewer59 at yahoo.com> wrote:
     I just rebuilt a Standard Vanguard engine for my Morgan. The SV engine was the forefather to the TR2/3/4 engines and uses the same internals with a different head. I put on an exterior oil gauge in the engine compartment because the gauge on the dash doesn't currently work. Anyway, when I primed the engine with a drive shaft down the distributor housing I got full oil pressure very quickly. When the engine is idling I show 80 PSI, even when hot. I have the standard Purolator oil filter housing and the PH3600 or equivalent for the oil filter, the same as on my TR3. It seems like the oil pressure would be 70 psi cold and about 40 psi at hot idle, like my TR3. I checked carefully when assembling the engine that the holes in the cam bearings lined up with the holes in the block.
     I am concerned that maybe something is wrong and I might snap the oil pump drive shaft or something. Any ideas what might be causing this? Or should I be happy that the engine is so tight and makes such goo oil pressure?

     -Bill Brewer


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