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-   -   Oil pressure and Oil viscosity (http://www.clubcobra.com/forums/all-cobra-talk/122746-oil-pressure-oil-viscosity.html)

cobra 53 11-09-2013 01:05 AM
Gary, Thanks for the explanation.

New oil is 10/40 and the oil pressure gauge still marks between 50-60 psi idling with warm engine. Turning up to higher rpm it marks at 70 psi.
How can I see or check the pressure rate of the installed relief spring? I know there are different spring rates available (Youtube, Melling oil pump Videos).

The HV pump conducts enough oil, so I think it would be possible to go with a lower spring rate.

cobra 53 11-09-2013 01:18 AM
Reply failure.

Gaz64 11-09-2013 12:06 PM
Quote:
Originally Posted by cobra 53 (Post 1271300)
Gary, Thanks for the explanation.

New oil is 10/40 and the oil pressure gauge still marks between 50-60 psi idling with warm engine. Turning up to higher rpm it marks at 70 psi.
How can I see or check the pressure rate of the installed relief spring? I know there are different spring rates available (Youtube, Melling oil pump Videos).

The HV pump conducts enough oil, so I think it would be possible to go with a lower spring rate.
You might find benefit in going to a thinner oil again, like 5W30.

You then might end up with 30-40psi at idle and still have 70psi as a max, although at a little higher rpms.

I wouldn't bother changing the spring to lower the maximum, it's fine at 70psi.


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