Re: [Classic Mustang] Low Oil Pressure Revisited

Dan that # sure sounds high for a stock pump and bottom end.... 35 -50 at 2600 rpm is what I have found on a ford page..... I'm not sure if I remember if your combo was stock or not ...Maybe 70lb with a high volume or high pressure pump...... but even at that your oil pressure sounds fine to me....... an old machinist told me one time that a good normal pressure @ idle was no less than 13 -14 lbs ////// sounds low..... but he built engines for a living...... who was I to question   JTS,Tim           --- On Thu, 6/4/09, Dan O'Reilly <dano@process.com> wrote: From: Dan O'Reilly <dano@process.com> Subject: [Classic Mustang] Low Oil Pressure Revisited To: classicmustang@yahoogroups.com Date: Thursday, June 4, 2009, 5:01 PM Finally got a chance to put a real oil pressure gauge on the car today to check it out. First of all, the specs from Ford on this motor call for 50-70 PSI @ 2000 RPM (they don't say what it should be at idle). I let the car warm up to normal operating temp, running my normal 10W-30 oil, and took a series of measurements: 500 RPM (at idle, in gear) - 16 PSI 800 RPM (at idle, out of gear) - 30 PSI 2000 RPM - right around 70 PSI So, assuming the gauge isn't totally whacked, I think I'm in good shape. To heck with the $1500 rebuild! <grin> Anybody else concur those readings are decent? One thing I noticed, by the way: at the lower RPM (800-500 range) the needle liked to waver a couple PSI or so. I'm guessing that's pretty normal - I've never had a "real" oil gauge before - but what do you all think? The nice thing is, this gives me some idea as to how to interpret the gauge in the dash, as it just has "L------H" on it. When it's midway, looks like it's at about 70 PSI. At idle, which is a bit to the right of the "L" line, it's about 16 PSI or so. --- Dan O'Reilly 1971 Bright Red Mach 1 2002 Black Deluxe Convertible Colorado Springs, CO

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