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

Getrag

Thread Tools
 
Search this Thread
 
  #51  
Old 04-10-2010, 07:04 PM
big bad diesel 416's Avatar
Site Sponsor
Join Date: Apr 2009
Location: Lexington SC
Posts: 3,719
Received 636 Likes on 254 Posts
Default

ok loosen all 3 bolts and push that sucker all the way to the head
 
  #52  
Old 04-10-2010, 07:21 PM
BIGREDGOAT's Avatar
Diesel Enthusiast
Thread Starter
Join Date: Mar 2010
Location: West texas
Posts: 403
Received 29 Likes on 18 Posts
Default

alrighty man, i will do it manana and post back with how much i see of a difference
 
  #53  
Old 04-10-2010, 07:31 PM
big bad diesel 416's Avatar
Site Sponsor
Join Date: Apr 2009
Location: Lexington SC
Posts: 3,719
Received 636 Likes on 254 Posts
Default

sounds good
 
  #54  
Old 04-11-2010, 07:54 AM
NadirPoint's Avatar
Diesel Bomber
Join Date: Aug 2009
Location: CO
Posts: 2,257
Received 186 Likes on 159 Posts
Default

Just be aware the heat produced from burning fuel in an internal combustion engine is a zero sum game. The EGT gauge reading lower only means the heat is somewhere else. That somewhere else in the case of advanced timing is in the cylinders, with increased cylinder pressure - thus better efficiency. So your EGT has shifted towards the pistons.

This won't usually be a problem within the normal rage of adjustments in a typical 1st Gen You could possibly run into issues with big power engines running on the hairy edge or possibly under heavy towing conditions, where you are going to get a meltdown quicker than you would with more conservative timing.
 
The following 2 users liked this post by NadirPoint:
big bad diesel 416 (04-11-2010), Richie O (04-11-2010)
  #55  
Old 04-11-2010, 12:33 PM
Richie O's Avatar
Diesel Enthusiast
Join Date: Jan 2009
Location: New England
Posts: 267
Received 17 Likes on 14 Posts
Default

Originally Posted by NadirPoint
Just be aware the heat produced from burning fuel in an internal combustion engine is a zero sum game. The EGT gauge reading lower only means the heat is somewhere else. That somewhere else in the case of advanced timing is in the cylinders, with increased cylinder pressure - thus better efficiency. So your EGT has shifted towards the pistons.

This won't usually be a problem within the normal rage of adjustments in a typical 1st Gen You could possibly run into issues with big power engines running on the hairy edge or possibly under heavy towing conditions, where you are going to get a meltdown quicker than you would with more conservative timing.

My thoughts as well. Everybody thinks that they will save the pistons with advancing the timing to lower the egt's. I feel it only lowers the temp after the cylinders.

---AutoMerged DoublePost---

Originally Posted by big bad diesel 416
no cons that i know of.....
lower EGTS
increased spool up
better mileage

take a tape and measure from the top of the pump to the head


Slower spool up.










.
 

Last edited by Richie O; 04-11-2010 at 12:33 PM. Reason: Automerged Doublepost
  #56  
Old 04-11-2010, 02:56 PM
big bad diesel 416's Avatar
Site Sponsor
Join Date: Apr 2009
Location: Lexington SC
Posts: 3,719
Received 636 Likes on 254 Posts
Default

Originally Posted by Richie O
Slower spool up..

never had that prob with an 1/8 bump
 
  #57  
Old 04-11-2010, 04:47 PM
Richie O's Avatar
Diesel Enthusiast
Join Date: Jan 2009
Location: New England
Posts: 267
Received 17 Likes on 14 Posts
Default

Originally Posted by big bad diesel 416
never had that prob with an 1/8 bump
Maybe not with an 1/8th but shoving it to the head was mentioned.
 
  #58  
Old 04-11-2010, 05:22 PM
big bad diesel 416's Avatar
Site Sponsor
Join Date: Apr 2009
Location: Lexington SC
Posts: 3,719
Received 636 Likes on 254 Posts
Default

Originally Posted by BIGREDGOAT
like a 1/16 or 1/8
Originally Posted by Richie O
Maybe not with an 1/8th but shoving it to the head was mentioned.

that is because it is only a 1/6-1/8 away from the head now
 
  #59  
Old 04-11-2010, 05:29 PM
Richie O's Avatar
Diesel Enthusiast
Join Date: Jan 2009
Location: New England
Posts: 267
Received 17 Likes on 14 Posts
Default

Most people measure where the lines are on the timing cover. Mine is 3/16's above the timing mark but still does not hit the head.
 
The following users liked this post:
big bad diesel 416 (04-11-2010)
  #60  
Old 04-11-2010, 05:32 PM
big bad diesel 416's Avatar
Site Sponsor
Join Date: Apr 2009
Location: Lexington SC
Posts: 3,719
Received 636 Likes on 254 Posts
Default

interesting i have allways done it from the afc to the head and gone 1/8 up there so that would be say 3/8 down there?
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
wvwelder89
1st Generation Dodge Cummins 89-93
1
09-28-2014 02:23 AM



Quick Reply: Getrag



All times are GMT -5. The time now is 09:32 AM.