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

1st gen upgrade help!!!

Thread Tools
 
Search this Thread
 
  #31  
Old 10-02-2014, 09:25 PM
Rx7man's Avatar
Diesel Enthusiast
Join Date: Nov 2009
Location: Lillooet BC, Canada
Posts: 183
Received 8 Likes on 7 Posts
Default

I hope you're not pushing 36 PSI from the stock turbo.. that's a pretty dicey area to ask it to work, it's certainly way out of it's efficiency and making a whole lot of hot air.
 
  #32  
Old 10-03-2014, 08:43 AM
93cummins12v's Avatar
Diesel Fan
Thread Starter
Join Date: Sep 2014
Posts: 26
Likes: 0
Received 0 Likes on 0 Posts
Default

I'm stumped as well I'm thinking I'm gonna go with the 5x12s and see what difference is with those
 
  #33  
Old 10-03-2014, 08:46 AM
93cummins12v's Avatar
Diesel Fan
Thread Starter
Join Date: Sep 2014
Posts: 26
Likes: 0
Received 0 Likes on 0 Posts
Default

Oh and as for the lift pump I'm not sure how to check it?
 
  #34  
Old 10-04-2014, 01:59 PM
cumminsblazer's Avatar
Diesel Enthusiast
Join Date: Jan 2010
Location: modesto ca
Posts: 316
Received 14 Likes on 12 Posts
Default

Im pushing 40 out of the hx35 and my 5x14s my egts never go above 1100 I only wish I would of gone with a 7 hole injector to get away from the idle hazing
 
  #35  
Old 10-04-2014, 03:07 PM
Rx7man's Avatar
Diesel Enthusiast
Join Date: Nov 2009
Location: Lillooet BC, Canada
Posts: 183
Received 8 Likes on 7 Posts
Default

cumminsblazer, is your EGT sensor before the turbo?
My 60mm HX35 is insufficient for what I'm asking from it with 60hp injectors, I'll readily get 1300F egt's and have to back off. 40 PSI is certainly outside of the design range of the turbo, and is *probably* overspeeding... it's rated for up to 3.0:1 pressure ratios and 60 lb/min flow (these are peak operating parameters, not where it's efficient.
 
  #36  
Old 10-04-2014, 11:39 PM
Rx7man's Avatar
Diesel Enthusiast
Join Date: Nov 2009
Location: Lillooet BC, Canada
Posts: 183
Received 8 Likes on 7 Posts
Default

edit, that 60 lb/min is wrong, Holset uses odd units of flow, It's in the 40ish lb/min flow rate
 
  #37  
Old 10-05-2014, 02:05 AM
cumminsblazer's Avatar
Diesel Enthusiast
Join Date: Jan 2010
Location: modesto ca
Posts: 316
Received 14 Likes on 12 Posts
Default

Lol yes pre turbo just got some great tunning that made a world of a difference I know im asking alot from the hx 35 for rpm but egt is not a problem one of my last things I did really made the difference with my egts and my smoke and gained power was putting a boost controller between the fuel pin diaphragm and the manifold
 
  #38  
Old 10-06-2014, 03:22 PM
cumminsblazer's Avatar
Diesel Enthusiast
Join Date: Jan 2010
Location: modesto ca
Posts: 316
Received 14 Likes on 12 Posts
Default

How many turns do you have your full fuel screw turned in?this whole your pump not being able to be turned up is bothering me
 

Last edited by cumminsblazer; 10-06-2014 at 03:28 PM.
  #39  
Old 10-06-2014, 06:14 PM
93cummins12v's Avatar
Diesel Fan
Thread Starter
Join Date: Sep 2014
Posts: 26
Likes: 0
Received 0 Likes on 0 Posts
Default

At this point I'm not sure I've jacked with it so much as of now i have it turned clockwise as far as I can. It gets tight like I have it bottomed out
 
  #40  
Old 10-07-2014, 01:30 AM
cumminsblazer's Avatar
Diesel Enthusiast
Join Date: Jan 2010
Location: modesto ca
Posts: 316
Received 14 Likes on 12 Posts
Default

Thats so weird im lost for words and I seen in the pics that you took off the lock ring maybe try starti g a new thread about that not doing anything just to get the right eyes on seeing the problem
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Texas Diesel
1st Generation Dodge Cummins 89-93
5
09-04-2018 12:24 AM
Cdog121
1st Generation Dodge Cummins 89-93
6
11-16-2015 01:49 PM
Tory4
For Sale
0
02-01-2015 08:33 PM
ajpt6.9
1st Generation Dodge Cummins 89-93
3
12-04-2014 12:06 PM
myago92
1st Generation Dodge Cummins 89-93
3
10-17-2014 08:50 AM



Quick Reply: 1st gen upgrade help!!!



All times are GMT -5. The time now is 02:30 AM.