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Different spring in the Oil Pressure Regulator??
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Posted by MI-Roger [Email] (#882) [Profile/Gallery] (more from MI-Roger) on Sat, 23 Mar 2013 17:20:30 Share Post by Email
In Reply to: Re: delaying the inevitable?, SWEDECAR [Profile/Gallery] , Sat, 23 Mar 2013 08:58:37
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I know this might be considered a bandaid to the real problem but a different rate spring could boost oil pressure by a few pounds. Since the gerotor oil pump in our Saab engines is a positive displacement type of pump the oil flow rate will not be reduced by increasing the pressure.

Making the pump do more work will require more horsepower, not a problem when bolted to a ~200HP or more engine. The higher power draw of the pump will require more fuel but since the pressure will be only a few pounds higher the fuel cost will likely be neglible.

Potentially a much lower cost repair/treatment for a high mileage vehicle when compared against full engine removal and rebuild.

Only a bandaid but cheaper than a heart transplant.
_______________________________________
Saabs owned:
2008 9-5 Aero Sedan, sold at 227K miles
2006 9-3SC 2.0T - Wife's daily driver
2000 Viggen Convertible - Sold May, 2022
1964 Quantum IV Formula Car - Retirement project
2000 9-5lpt Sedan, sold at 318K miles
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