5.9L Rotary Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps Related To Performance And Longevity

Shaving The Timing Advance Piston

Old Dec 13, 2009 | 10:26 PM
  #21  
Alwaysworking's Avatar
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Originally Posted by muskrat
So, does this do the same thing as advancing the pump an 1/8"?
in theroy it does.

you gain topend power when bumping the timing an 1/8th but lose low end, when you put in the spacer, you can keep the low end grunt of stock timeing but still gain the upper rpm power do to the dynamic advance.

I dont know how to convert the MM into degrees yet
 
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Old Dec 14, 2009 | 04:37 PM
  #22  
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Old Dec 14, 2009 | 05:53 PM
  #23  
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Cool. I want one. A stock pump (timing wise) normally, advances to a maximum angle of 12*, right?
 
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Old Dec 14, 2009 | 06:02 PM
  #24  
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So with this part my base (static) timing will stay the same but the total (dynamic) advanced timing will increase?

Stock the VE engines have 1.25mm of plunger lift at TDC, thats about 12.5* base timing and get to 21*-22* total advance (depending on who you listen too), With your spacer your saying that its good for 1mm of timing (i'm assuming you are talking about plunger lift), so on an otherwise stock truck with the stock 12.5* base timing what total advance will you spacer allow someone to see?
 
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Old Dec 14, 2009 | 10:50 PM
  #25  
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according to the math you have posted it would transfer into 31*-32*
 
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Old Dec 15, 2009 | 12:14 AM
  #26  
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So with this we are looking at keeping our stock timing set so we will keep our low end grunt, but allowing the motor to advance more like bumping the pump.

So, how does this 1mm of timing compare to the 1/8 inch bump? Is it turning out overall to be the same degree?
 
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Old Dec 15, 2009 | 04:02 PM
  #27  
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so where do you install the spacer i got lost somewere allong the way, and it saounds like it would work much better then the 1/8" pump bump.
 
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Old Dec 15, 2009 | 04:10 PM
  #28  
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So its good for an aditional 10* of advance?
 
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Old Dec 15, 2009 | 05:40 PM
  #29  
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january is almost here.... but untile then ill just watch and learn.
so lets see if i am on the rite page here?
with the spacer . and pump at stock settings.. you will get 10* of timming on the back side of the rpm. and you will have the sameole bottem side?
so if i was to add the spacer and go back to my 1/8 timming bump. wiill i be in the 20* of timming.. or close to 30* has these been used any. any dyno charts. of what it will do in hp?rswords. you need to get one.. and let us know.. eather way it will be something to play with.. and alwayworking.. do you have a set of instruction with pics . that you can post on here.. we can kinda get an ideA of where it goes and how hard it will be,, will it be a 6 pck.. or a case. or a keg..
 
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Old Dec 15, 2009 | 05:59 PM
  #30  
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Well, the way I see it is, say, 21* is the dynamic timing advance on a stock pump @ 1.25mm of plunger lift. This spacer adds 1mm to that. totaling 2.25mm of plunger lift. That is 55.5555% increase. I don't think you will gain a full 55% increase in timing but, close, in theory. Probably about what Alwaysworking said, 31* 0r 32*
 
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