[DeTomaso] Oil pressure help needed

[jgkrenton at comcast.net]

Chris: 



You are not going to be a pillar of fire..  Fire is usually a big ball...... 



Seriously though, There are a number of reasons your car may be running higher than normal pressure.  But most likely the Melling pump came with a "high pressure relief valve spring."  It's not a fatal issue, which is why Melling sells pumps that way.  I ran one in my Pantera/Cleveland for years without any problems.  It's really just a waste of horse power and can be hard on the distributor drive pin (the one that always breaks,,,   is your's double pinned?) and occasionally someone will break the oil pump drive shaft.  



But, I suspect you could drive this way for years and never notice it except for the high reading.. 



Just be glad it's not a Chevy with a paltry 35 pounds at best.... 



Jeff/2467 


----- Original Message ----- 
From: "Christopher Kimball" <chrisvkimball at msn.com> 
To: wdemelo at cogeco.ca, "Pantera List Serve" <detomaso at realbig.com> 
Sent: Sunday, May 16, 2010 8:10:59 PM GMT -08:00 US/Canada Pacific 
Subject: Re: [DeTomaso] Oil pressure help needed 


Mobile 1 Synthetic 5-40. 

Chris 







What grade of oil? 
W 
----- Original Message ----- 
From: "Christopher Kimball" <chrisvkimball at msn.com> 
To: "Pantera List Serve" <detomaso at realbig.com> 
Sent: Sunday, May 16, 2010 10:38 PM 
Subject: [DeTomaso] Oil pressure help needed 
  
  
> 
> I've inquired about my oil pressure before, and some suggested since my 
> motor is new, a bit higher than normal could be expected. 
> 
> It's been over a thousand miles on it now, though, and it still seems 
> pretty high.  It was suggested I check with the experts (read: you all) to 
> see what the general consensus was. 
> 
> The stock gauge reads 68 and Idle, and 70 (all the way to the right) under 
> hard accelleration.  The mechanical gauge I installed a while ago shows 
> about 60 at idle and 65 to 70 at normal cruising speed on the freeway. 
> When sitting idle, however, when I rev the engine the mechanical gauge 
> goes to 85 at about 35000 rpms. 
> 
> In checking the engine build sheet, it shows a M84AHV Melling oil pump.  I 
> think the HV means high-volume, which, apparently, may not be a good 
> thing. 
> 
> How big of a problem is this?  Am I going to be happily driving to Reno 
> next month, only to explode into a pillar of fire? 
> 
> Thanks, 
> 
> Chris 

> From: wdemelo at cogeco.ca 
> To: chrisvkimball at msn.com; detomaso at realbig.com 
> Subject: Re: [DeTomaso] Oil pressure help needed 
> Date: Sun, 16 May 2010 22:50:25 -0400 
> 
> What grade of oil? 
> W 
> ----- Original Message ----- 
> From: "Christopher Kimball" <chrisvkimball at msn.com> 
> To: "Pantera List Serve" <detomaso at realbig.com> 
> Sent: Sunday, May 16, 2010 10:38 PM 
> Subject: [DeTomaso] Oil pressure help needed 
> 
> 
> > 
> > I've inquired about my oil pressure before, and some suggested since my 
> > motor is new, a bit higher than normal could be expected. 
> > 
> > It's been over a thousand miles on it now, though, and it still seems 
> > pretty high.  It was suggested I check with the experts (read: you all) to 
> > see what the general consensus was. 
> > 
> > The stock gauge reads 68 and Idle, and 70 (all the way to the right) under 
> > hard accelleration.  The mechanical gauge I installed a while ago shows 
> > about 60 at idle and 65 to 70 at normal cruising speed on the freeway. 
> > When sitting idle, however, when I rev the engine the mechanical gauge 
> > goes to 85 at about 35000 rpms. 
> > 
> > In checking the engine build sheet, it shows a M84AHV Melling oil pump.  I 
> > think the HV means high-volume, which, apparently, may not be a good 
> > thing. 
> > 
> > How big of a problem is this?  Am I going to be happily driving to Reno 
> > next month, only to explode into a pillar of fire? 
> > 
> > Thanks, 
> > 
> > Chris 
> > 
> > 
> > 
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