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Join Date: Jan 2007
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no oil pressure please help

I got a 1969 porsche 911t it has 9 pounds of oil pressure at idle when give it gas it goes to 13 pounds. been through engine all looks good. found a oil pressure relieve valve missing, put a valve in from another engine, same problem. I took oil pump apart all is fine cams are nice in heads, crank is nice with bearings looking great no wear marks on them. When i got this car this motor was in it. not running that was cause of bad carbs. looks also someone went through motor before cause of silicone on case halves. also looked like new valves or heads where redone cause no carbon or black on exhaust valves. any help will be greatly appreciated. thanks
Old 01-28-2007, 02:29 PM
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There are a couple of different configurations of pressure relief and safety relief valves. You have to have the correct ones for your oil pump and relief system. There is information on this in Waynes book as well as most of the other manuals. The best bet would be to find the original parts and put them back in.

-Andy
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Old 01-28-2007, 04:53 PM
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HI jaguareats, you checked this with a cold engine ?? and the readings you had are 9lb idle and only 13lb at higher rpm, how high??, the oil pump will cope with the crank plug missing with cold oil, with the oil pressure readings you have, as you now have the engine apart for inspection, check your crank as one of the ally' oil blanking plugs could have come out and as the engine looks as it has been apart recently the plug could have been removed in the strip down.

regards mike
Old 01-28-2007, 11:44 PM
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HI will this help for the oil pressure valve arrangement/check.



regards mike
Old 01-28-2007, 11:52 PM
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I raised rpms to 1500 for a second. I got the right releive valves in there with the springs i got waynes rebuilding book here and 101 project book just to double check them. also looked on mbs pics also thanks mb.
Old 01-29-2007, 08:48 AM
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went to look at car again today. put a different oil guage in it my other guage was not working right so i find out now lol. now i got 40 lbs at idle. maybe i should of trusted the factory guage but i got burnt on the car guage at 1 time destroyed motor in matter of a minute. thanks alot to all that replied to me.
Old 01-29-2007, 12:22 PM
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