Adjustable Timing Pump Gear* - Diesel Bombers

94-98 12V Cummins 5.9L P7100 Tech Talk '94-'98 5.9L Cummins 12-Valve P-9100 Tech Articles

LinkBack Thread Tools Search this Thread
Old 04-21-2010, 11:34 AM
94 12valve's Avatar
Diesel Bomber
Thread Starter
Join Date: Jan 2009
Location: Pylesville, Maryland
Posts: 3,504
Thanked 157 Times in 142 Posts
Default Adjustable Timing Pump Gear*

Well I just finished installing my new adjustable pump gear

This gear is keyed on the end of the p pump shaft and bolted on useing the same nut and washer as the stock gear. The huge plus of this is my timing can never slip and it takes 1/4 of the time to cange my timing.

here is the gear it self. as you can see it has 6 big allen bolts and 1 small allen. The big allen bolts are in a slot which when backed off allow the gear to turn while the pump stays in place. This way I do not have to brake the nut loose to change timing. The small allen is inserted into one of the many small holes on the inside of the gear, for every hole the timing is either advanced 2* or retarded 2*. When installing the gear I mounted it so I can run a max of 30* BTDC or a min of 2* ATDC.

Here is the gear installed
Name:  CIMG0343.jpg
Views: 2884
Size:  179.9 KB

To run one of these you will need to mod you timing cover. Basicly the oil hole needs to be bigger to be able to unscrew the allen head bolts
Name:  CIMG0348.jpg
Views: 1353
Size:  226.0 KB

Here is what the cover looks like installed on the truck
Name:  CIMG0350.jpg
Views: 820
Size:  131.2 KB

I know its not in the middle of the gear ( I mounted it wrong while mocking it up) but this is what I will have to work with when I want to change my timing.
Name:  CIMG0351.jpg
Views: 1048
Size:  176.3 KB
Old 04-21-2010, 01:11 PM
94 12valve's Avatar
Diesel Bomber
Thread Starter
Join Date: Jan 2009
Location: Pylesville, Maryland
Posts: 3,504
Thanked 157 Times in 142 Posts

They have been out for a few years ( that I know of) but they were always so much $$$ ( like 600+ for just the gear). Jesse of JD's diesel started makeing them with some minor changes for half the price.

It cost me $415 for the gear and the peice to mod the front cover, you will have to send Jesse your pump gear as a core. Main here is there web site

Last edited by Red_Rattler; 01-15-2011 at 08:01 PM. Reason: Automerged Doublepost
The Following User Says Thank You to 94 12valve For This Useful Post:
CumminsKid6 (03-16-2011)

Related Topics
Thread Thread Starter Forum Replies Last Post
LB7 fuel pump? Back-in-Black Chevy/GMC Duramax 01-04 LB7 8 08-13-2017 10:35 PM
Chev 6.5L TD - New pump but no fuel HardLuck Diesel In Distress - Support Ticket 0 06-24-2015 08:04 AM
6.2L Pump Timing Help letters4and18 Chevy/GMC 6.2L and 6.5L 1 03-25-2015 03:06 PM
PO1218 and slight miss moneypitk5 Chevy/GMC 6.2L and 6.5L 3 02-12-2015 11:01 AM
Fuel plate removal slips timing? SMatyac 12 Valve 2nd Gen Dodge Cummins 94-98 2 11-15-2014 07:35 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 02:37 PM.

© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.