Oil pressure issue

[Mikel]

Hello,
A little background on my problem: I swapped a 425 into my '66 Toronado that had been rebuilt 25 years ago, ran for a short period and had sat since. When I first started up the engine, oil pressure shut up to 60 PSI cold and any throttle would make the pressure reach 100PSI, destroying my mechanical pressure gauge in the process. Thinking it was a stuck relief valve, I added some seafoam and eventually the relief valve broke open and started limiting the pressure to 60-70psi.

Now, running 10W30 Castrol GTX, (same oil as before, minus the seafoam), I have about 30psi at idle (cold) and 5 when warm. When driving at around 2000RPMs, pressure is about 40psi. No matter how much I rev the engine, it doesn't go over that pressure, which points again towards the relief valve. Is it possible that the same gunk that kept the relief valve shut now is keeping it partially open?

Thanks,
Mikel
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[bill_freeman]

Now, running 10W30 Castrol GTX, (same oil as before, minus the seafoam), I have about 30psi at idle (cold) and 5 when warm. When driving at around 2000RPMs, pressure is about 40psi.

40psi at driving speed is OK. 5psi at idle sounds low but is probably OK. If it worries you, try heavier oil, say 15-40 or 20-50 to raise the idle pressure. On a rebuild the idle oil pressure is highly dependent on the bearing clearances. Maybe it was setup a little loose. Maybe the oil pump was worn. You can get a high volume oil pump for Olds engines and they are not expensive. I think I paid about $60 for a new one on eBay that I have not installed yet.

[zzzlooop]

Hi guys...love the forum so far. I have AC and heat but the air only comes out at the floor and windshield no matter what setting its on. I'd love to have my AC coming out of the personal vents. Any ideas what I should be looking for? Could it be a vacuum problem?

Thanks,

[MikeB]

You should start a new topic for a new question.
And if it has Comfortron and which year.

Mike.