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

Wishing I never touched the pump

Old Oct 7, 2011 | 12:23 AM
  #11  
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Wow wow wow calm her down a gear there buddy. He got pretty much the same info there as here.
 
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Old Oct 7, 2011 | 06:18 AM
  #12  
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Yes posted this on multiple forums.

I dropped off the pump on monday at a shop in town. I talked to them on wednesday and they gave me the bad news. Pump was seized and full of metal filings. So they are building me a new one.
 
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Old Oct 7, 2011 | 07:57 AM
  #13  
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Ouch....
 
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Old Oct 7, 2011 | 07:30 PM
  #14  
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That's never nice to see. You gonna get a stock rebuild or get a gov spring n fuel pin installed?
 
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Old Oct 7, 2011 | 10:20 PM
  #15  
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Well it will be "stock" with a M&H M2 pin, timing spacer and 4200 RPM spring.
 
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Old Oct 7, 2011 | 11:37 PM
  #16  
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Don't you think your going a little overkill on the RPM's? Just so you know anything over 3600RPM's on a cummins you need #60 valve springs or your valves will start to float.
 
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Old Oct 8, 2011 | 12:02 AM
  #17  
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Originally Posted by 1stgenblowingsmoke
Don't you think your going a little overkill on the RPM's? Just so you know anything over 3600RPM's on a cummins you need #60 valve springs or your valves will start to float.
I put a lot of thought into that.

I choose the 4200 spring for a couple of reasons

I only wanted to go into the pump once. I figured buy going that high no mater what I did in the future I wouldn't have to change the spring again.

I have read in several sources that the VE will not fuel the motor much past the 3500 point. So really once you go past that 4200 or 10000 rpm spring whats it matter?

I have never had any problem over reving my gas engine trucks and they don't have a rev limiter. So I fell confident with the tach I won't wind this motor to the moon.

If I could have found a good reliable and proven way to defeat the rev limiter portion of the governor altogether I would have.

I'm really looking forward to the new pump. I was never impressed with the millage of the truck or the power. It seemed weaker than my last cummins.
 

Last edited by SaskW200; Oct 8, 2011 at 12:10 AM.
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Old Oct 8, 2011 | 12:09 AM
  #18  
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I see you have done a lot of research well hope it all works out for you.
 
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Old Oct 8, 2011 | 12:11 AM
  #19  
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Originally Posted by 1stgenblowingsmoke
well hope it all works out for you.

Me too.
 
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Old Oct 10, 2011 | 02:33 AM
  #20  
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LOL thats to funny never over rev'ed your gas engine. You have a lot to learn if you think a diesel is anything like a gas engine And if you think it won't fuel above 3500 you are WRONG
 

Last edited by jwirth; Oct 10, 2011 at 02:42 AM.
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