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Always learning
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Oil pressure for fender cooler
Hello list
Does anyone know what is the operating PSI for the fender mounted oil cooler?need to purchase flexi oil lines. Cheers Roland Last edited by rolls 912; 10-01-2009 at 04:33 AM.. |
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09-30-2009, 10:07 PM
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Join Date: Apr 2009
Location: Cape Vincent, NY
Posts: 841
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Will be same pressure as rest of oil system I believe. I looked at the factory manual I have and there was no info on the pressure specifically for that system, just for the whole oil system.
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1968 911S "Leona" Air goes in and out, blood goes round and round, any variation on this is a bad thing. |
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10-01-2009, 10:25 AM
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Same.
Your gauge goes to (I think) 7 bar, that's about 100 psi. You'd be well advised to have a very liberal safety factor, though. |
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10-01-2009, 10:29 AM
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Location: S. Florida
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I don't know what the actual oil pressure of the scavenge oil circut is or could go up to, but the only resistance to oil flow in the scavenge circut is the external thermostat, the front oil cooler(s), and the oil filter so it shouldn't be very high.
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10-01-2009, 10:39 AM
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Location: Encinitas (San Diego CA)
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Quote:
There are effectively two pumps in the 911 oiling system (at least pre-996). One feeds lubrication and cool oil to the engine's moving parts and the second is a scavenge pump, which removes oil from the crankcase and pressurizes the cooling system loop, returning oil to the tank. The scavenge / cooling system is lower pressure, as long as the oil is up to temp. If I remember reading correctly on the order of 10 to 15 psi. I'm not sure where to find this information, but probably a search here on Pelican. I'm certain there are two different operating pressures for the two pumps (they do share an input shaft). Doug
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1971 RSR - interpretation |
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10-01-2009, 11:26 AM
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Always learning
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oil pressure
Thanks for the replies... So I am clear - Do I install 100PSI tubing or is the consensus that I need more (appears to be ample)?
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10-01-2009, 02:29 PM
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Join Date: May 2003
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The scavenge circuit operates at a very low pressure if there are no obstructions. If a line is crimped the pressure can go higher. There is a pressure relief valve in the thermostat for the cars with a front cooler. I don't know what pressure the relief valve opens at. I'm sure that 100 PSI line would be safe as long as you don't have a blockage and the pressure relief valve is working.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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10-01-2009, 05:21 PM
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