12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Rack Plug?

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  #1  
Old 12-26-2009, 12:59 AM
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Default Rack Plug?

what is the rack plug?
what is its functions?
what would i gain by buying a new one? such as the mack rack plug?
thanks
-dan
 
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Old 12-26-2009, 07:19 AM
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Old 12-26-2009, 02:22 PM
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it'll add a tiny bit of top end power... i gain about 3psi of boost due cuz of the added fuel cuz the rack moves a little farther, imo its worth it but if ur looking for a big gain a rack plug isnt the right thing to buy
 
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Old 12-27-2009, 02:42 AM
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oh no im not looking for any more powe. just a simple add on .
im happy with the power i got. i think i need some injectors and 191's. along with my new exhaust housing for my twins.
thanks for the info

---AutoMerged DoublePost---

i also see it wont do me much since i have the 215 pump?
 

Last edited by dan33klein; 12-27-2009 at 02:42 AM. Reason: Automerged Doublepost
  #5  
Old 12-27-2009, 09:21 AM
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Originally Posted by oglejust
it'll add a tiny bit of top end power... i gain about 3psi of boost due cuz of the added fuel cuz the rack moves a little farther, imo its worth it but if ur looking for a big gain a rack plug isnt the right thing to buy

I will disagree with you the extra 2mm of rack travel can make a big difference
 
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Old 12-27-2009, 10:28 AM
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well it depends on the setup, with my setup it didnt do much
 
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Old 12-27-2009, 10:35 AM
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alright its worth a try i guess, plus i was told that the rack plug was the reason my truck hangs up at about 1200rpms before it drops to an idle when i push in the clutch
 
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Old 12-27-2009, 12:16 PM
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With his truck being a 215 pump truck the rack plug may not help him much anyway as anything over 18mm of rack travle just gets lost with the retarding barrels and plungers.
 
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Old 12-27-2009, 02:04 PM
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yeah. my 3 buddies and me are each gunna pay a quarter of the snap on timing kit for our 12v's. 50 bucks for me sounds good to be able to change and play with the timing
 
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Old 12-27-2009, 04:51 PM
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I thought it was anything over 16mm on a 215 pump and the retard notches come into play.
 


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