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Oil Pressure on G

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Ray A

06-03-2003 16:14:57




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Just brought a G home to restore. What should the oil pressure be at 1/2 throttle? How about idle? Thanks, Ray




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Plant Doctor

06-06-2003 16:21:16




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 Re: Oil Pressure on G in reply to Ray A, 06-03-2003 16:14:57  
Ray: Sorry I did not get back to you sooner regarding this oil pressure isssue, but I am beyond busy right now and do not get much time to read this forum. The oil pressure on the "G" is regulated with a plunger type relief valve. The valve is located on the camshaft side of the engine on the engine mounting flange very close to the oil pressure gauge. The retaining plug on the engine flange looks like a big screw head. If you need more oil pressure remove the retaining plug. After removing the plug there should be a spring and a plunger. Add a washer or washers as needed between the spring and the retaining plug. If the oil pump is badly worn or the bearing are badly worn, adding washers will not be much help. Do not regulate the oil pressure much above 20 psi on the "G." Oil pump parts are getting more and more difficult to get for the N62. Good luck!

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Ray A

06-08-2003 04:56:07




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 Re: Re: Oil Pressure on G in reply to Plant Doctor, 06-06-2003 16:21:16  
After thought, when I was placing the washers between the plug and spring I did not see a plunger. I took the spring out with a pair of needle nose but no plunger. Could it be stuck way back there in that position? If so what does that do and how can I get it out? I took a look back in there but not knowing exactally what that plunger looks like could not detect it. Thanks, Ray



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Ray A

06-07-2003 20:06:24




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 Re: Re: Oil Pressure on G in reply to Plant Doctor, 06-06-2003 16:21:16  
Plant Doctor, put washers in today but pressure didn't change. Any additional comments before I think about oil pump or bearings?



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Ray A

06-06-2003 19:15:12




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 Re: Re: Oil Pressure on G in reply to Plant Doctor, 06-06-2003 16:21:16  
Thanks for the suggestions and help. Will try to increase oil pressure by adding washer. Will get back to you on results. Thanks again



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Rob

06-05-2003 20:30:27




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 Re: Oil Pressure on G in reply to Ray A, 06-03-2003 16:14:57  
you can add oil pressure by putting in new gears in the oil pump but to get to it you need to remove flywheel you should not have much play in the gears



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Ray A

06-05-2003 17:28:33




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 Re: Oil Pressure on G in reply to Ray A, 06-03-2003 16:14:57  
Pressure is 8 lbs and appears to stay there. Other than Main Bearings, do you have any suggestions as what may be done to increase pressure? Thanks Ray



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Plant Doctor

06-05-2003 06:20:08




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 Re: Oil Pressure on G in reply to Ray A, 06-03-2003 16:14:57  
Ray A: The oil pressure should hold at 15 to 20 psi when engine is hot.



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DanD.

06-03-2003 17:05:19




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 Re: Oil Pressure on G in reply to Ray A, 06-03-2003 16:14:57  
On my G, the gauge generally runs all the way to the end, past the "L" on the word "NORMAL".



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