Last year, I rebuild my '75 TR6 engine complete. New oil pump, .020
pistons, block and head trued, etc. Basically, everything that moved
was replaced. (Humm... I just had some recollection of a dream I had
lastnight that had something todo with a connecting rod - nevermind.)
Here we are 3000 miles later and this problem has persisted since
first ignition on the rebuild. I'm using Castrol 10W40 and when I
first start then engine up in the morning, we're talking 100lbs of oil
pressure. After the oil reached full temp, I've got 70-75 lbs of
pressure running, and 35-40lbs of pressure at idle, which I think is
ideal. So I figure the previous owner dweeb must have put a heavy
spring in the oil pressure relief valve. I just replaced the spring
this morning and no change whatsoever. I did notice that in the
hollow bolt that the spring didn't go all the way to the bottom. It
was hitting a stop of some sort. My question is: Does the valve stem
go the same depth into the bolt that the spring does? Is that stop
supposed to be there?
The setup now is like this:
----------| <-- the relief valve
[[======== <-- the spring sitting on some "thing" in the bolt.
(I can't get the "thing" out of there)
Should it be like this(?):
----------| <-- the relief valve
========== <-- the spring sitting on the back of the hollow bolt.
If that thing in the bolt isn't supposed to be there, how can I get it
out? (Buy a new bolt?) I'm sure this high oil pressure is putting a
bit of extra stress on my seals, but other than that, am I hurting
anything? It's not leaking anywhere... (Heck with that much oil
pressure, I doubt my crank is even touching the bearings. :-)
I think that the engine is pretty well broken in now so I'm thinking
about a synthetic oil. I was going to switch to Mobil 1, but the new
Castrol 5w50 synthetic looks really great. Any opinions on these
oils? Don't tell me to go out and buy a case of Redline because $7-$8
a quart is just too much $$$ for a 6 quart engine. :-)
Ta ta for now....
---
>From the point of ignition, To the final drive.
The point of the journey is not to arrive. Anything can happen. --Rush
-Scott
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