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super m oil pressure


 
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Pat connors
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PostPosted: Fri Oct 05, 2012 9:17 am    Post subject: super m oil pressure Reply to specific post Reply with quote

super m oil pressure starts high, then drops to zero after it warms up why?
 
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David G
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Joined: 11 Jan 2008
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PostPosted: Fri Oct 05, 2012 9:19 am    Post subject: Re: super m oil pressure Reply to specific post Reply with quote

Something is worn, the viscosity of the oil decreases as it warms.
 
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Andrew Z
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Joined: 12 Sep 2004
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PostPosted: Fri Oct 05, 2012 9:58 am    Post subject: Re: super m oil pressure Reply to specific post Reply with quote

could be rod or main bearings, cam bushings, or oil pump tired.

Andrew
 
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wisbaker
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Joined: 19 Oct 2007
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PostPosted: Fri Oct 05, 2012 10:07 am    Post subject: Re: super m oil pressure Reply to specific post Reply with quote

What oil are you using? Some of the older stuff likes a thicker oil, especially after it gets some wear on it. I'd use a 30 weight strait oil or thicker in it, make sure it's full and maybe check the spring on the oil pump that bleeds off excess pressure. I had an old Chevy truck with weak main bearings, installed a high volume oil pump and stayed with 20-50 oil, fixed the oil pressure problem. Don't know if you can get a high volume pump for a SM.
 
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