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LOW OIL PRESSURE ON MODEL C

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JOHN CAMPBELL

08-02-2002 13:21:02




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I HAVE REBUILT THE ENGINE ON MY MODEL C NEW CYL KITS,VALVE JOB,MAIN AND ROD BEARINGS,OIL PUMP VANES SPRINGS AND RELIEF SPRING STARTED THE OTHER NIGHT O/P COMES UP REAL SLOW AND WAS BARLY OFF 0 AT IDLE TRIED 2 OTHER GAUGES PULLED ENGINE AGAIN CHECKED VANES THEY ARE INSTALLED CORRECTLY IN PROCESS OF PLASTIGAUGING MAINS AND ROD AGAIN ALL ABOUT .002 FIRST TIME ANY HELP APP.THANKS JOHN




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JOHN CAMPBELL

08-02-2002 18:27:56




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 Re: LOW OIL PRESSURE ON MODEL C in reply to JOHN CAMPBELL, 08-02-2002 13:21:02  
I DID NOT REPLACE THE CAM BEARINGS AND THE TUBE IS STIL IN THE OIL FILTER HOUSING THIS ENGINE WOULD HOLD 12 PSI O/P BEFORE O/H HOT 9PSI IS THE BEST IT HAS KNOW WIDE OPEN COLD VERY LITTLE AT IDLE TOOK A SHIM OUT OF EACH MAIN I WILL TRY TO GET IT TOGETHER TOMOROW MORNING TOO HOT TO WORK ON IT TONIGHT THANKS JOHN



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Doug in OR

08-05-2002 15:43:07




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 Re: Re: LOW OIL PRESSURE ON MODEL C in reply to JOHN CAMPBELL, 08-02-2002 18:27:56  
I wouldn't experiment with shims in the main bearings. The same goes for your rod bearings. Get some plasti-gauge and shim the bearings for the proper clearance - probably around .002 - leave those alone once you get the proper clearance. Otherwise, check those items the others have recommended.



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Harold

08-02-2002 14:26:06




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 Re: LOW OIL PRESSURE ON MODEL C in reply to JOHN CAMPBELL, 08-02-2002 13:21:02  
What about Camshaft bearings?Did you replace them? They have alot to do with oil pressure.



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Kip UT.

08-02-2002 15:08:53




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 Re: Re: LOW OIL PRESSURE ON MODEL C in reply to Harold, 08-02-2002 14:26:06  
Check & make sure that you did not inadvertantly throw the tube that goes up in the center of the oil filter away w/ old oil filter. If this tube is missing you will have VERY LOW oil pressure.



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steve

08-02-2002 18:31:20




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 Re: Re: Re: LOW OIL PRESSURE ON MODEL C in reply to Kip UT., 08-02-2002 15:08:53  
at the front of the cam shaft in the timing gear, there is a spring loaded plug (in the middle of the cam shaft hole). make sure it got put back inside. oil is routed down this hole from back of the engine.



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