1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

AFTERMARKET FUEL PIN

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  #11  
Old 04-09-2010, 02:00 PM
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I would be nice to see the comparison of the stage 1 and 2 show next to the m&h ones to see what the profiles look like.
 
  #12  
Old 04-09-2010, 02:58 PM
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Originally Posted by Richie O
Turning a stock pin is not much difference. All 3 of the ones I have turned were almost set to the deepest anyway from day 1. Don't just turn it without looking where it is. My 92 was about 10 degrees from deepest. An aftermarket M+H pin gave me 5 or 6 psi more boost. The only drawback on a deep pin is the chance of it making the pump leak fuel.
yeah my pump leaked after putting in the denny t pin
 
  #13  
Old 04-09-2010, 03:03 PM
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Alright guys, thats not what I want to hear after pulling the motor and trans and cleaning them up and replacing all kinda of gaskets and seals. I hope this thing has no leaks for a long time.
I can dream right?
 
  #14  
Old 04-09-2010, 03:03 PM
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Originally Posted by Randall
yeah my pump leaked after putting in the denny t pin
All aftermarket pins will do that. It wont hurt anything.
 
  #15  
Old 04-09-2010, 03:05 PM
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  #16  
Old 04-09-2010, 03:09 PM
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Originally Posted by pewder
Its not an external leak. I would not even call it a leak as much as a seep. Some donlt even leak. You will just notice some fuel in the bowl were the pin goes. Its the only draw back to an aftermarket pin. And its not even gonna hurt anything.
 
  #17  
Old 05-21-2010, 08:08 PM
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An Old Smokey pin woke up my 93 and was simple to install.
 
  #18  
Old 05-22-2010, 03:27 PM
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That leak is usually just the gunk built up on the pin that rides on the fuel cone.
The stock cone doesn't let the pin come out as far as aftermarket ones do.
After driving it for a while the gunk is scrubbed off by the washer and the leak goes away.
 
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