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1975_Challenger_461

  • Karma: +1/-0
Hot Oil
« on: August 14, 2011, 05:20:49 am »
Ran new bbc at Parker with a B&B pan (yeah I know, i'm cheap) and when the engine got up to running temps the engine oil got very thin and was only pushing a little over 5 psi at idle. I was running 10/30 with lucas oil additive. I was thinking about getting an engine oil heat exchanger. Has anyone ever ran one of these? Also, I saw that a bunch of you guys are running 20/50. Is that to eleviate this problem? At higher rpm's the oil psi is fine I just don't want to cook a bearing.
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Ralph Brunt

  • Karma: +51/-0
Re: Hot Oil
« Reply #1 on: August 14, 2011, 06:25:37 am »
as long as the oil pressure comes up with rpm the system is working fine, i have heard good things about those pans.... try a little thicker oil if you want higher oil pressure. what is your idle pressure cold and at speed?
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JMS-1

  • Karma: +0/-0
Re: Hot Oil
« Reply #2 on: August 14, 2011, 09:29:51 am »
i agree with Ralph, if this is the pan you have it is decent. do you know what oil pump is in your engine?
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crewchief22

  • Karma: +66/-0
Re: Hot Oil
« Reply #3 on: August 14, 2011, 10:26:59 am »
Mount a mechanical oil pressure gauge near the engine and compare the readings with the electric gauge on the dash.  It might not be as low as you think.
  • Boat #1: '77 Hondo Pantera GT Jet
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"Racing is life!  Anything that happens before or after, is just waiting"    Steve McQueen

The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?

Watts420

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Re: Hot Oil
« Reply #4 on: August 14, 2011, 11:03:01 am »
Mount a mechanical oil pressure gauge near the engine and compare the readings with the electric gauge on the dash.  It might not be as low as you think.

I run both. Mechanical off of my oil relocater and the one on the dash. I always trust the one on the rear by the motor. Seams like it's always 10psi more than the one on the dash.
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1975_Challenger_461

  • Karma: +1/-0
Re: Hot Oil
« Reply #5 on: August 14, 2011, 01:50:38 pm »
The one on the dash is mechanical, braided line all the way up.  :thumbup: Cold at idle it's at 55psi and just goes up from there with the rpm's. The oil just thins out at running temp and is low at idle. Guess it just makes me uncomfortable. I may try to go with a heavier oil. Thanks guys.  :beer:
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Watts420

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Re: Hot Oil
« Reply #6 on: August 14, 2011, 03:25:46 pm »
That sounds about right
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crewchief22

  • Karma: +66/-0
Re: Hot Oil
« Reply #7 on: August 14, 2011, 03:58:18 pm »
As long as it doesn't rattle at idle, don't mess with it.
  • Boat #1: '77 Hondo Pantera GT Jet
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"Racing is life!  Anything that happens before or after, is just waiting"    Steve McQueen

The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?

 


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