Shim your governor springs

BlackSkyRacing

BlackSkyRacing

Living Under a Rock
Took me awhile to find washers that worked without a lot of drilling/grinding, but since I'm lazy and would rather look for hours on end for something that requires less actual work... I found that M12 washers with an OD of about .910" and no more than .075" (no less than .060") work perfectly for this. Anything with an OD bigger than .975" tends to hang up on the outer (idle) spring. Now to the dirty part.

Tools required: 7/8 socket, ratchet (duh), wire snips, needle nose pliers, multi purpose calipers (preferably electronic for ease of use).

1) Locate stamped steel plug on side of governor housing near bottom of pump.

2) Clip off sealing wire and remove plug with 7/8 socket/ratchet (careful a small amount of oil will be lost when plug is removed).

3) Roll engine over till governor spring retainer is centered in hole.

4) Measure and take note of stud protrusion, which should ideally be around .050".

5) Using the tips of the needle nose pliers to engage the slots on the spring retainer nut, remove the nut and place in a safe clean place.

6) Remove the spring retainer and place the washer flat on top of the inner springs being sure it does not contact the outer spring.

7) Replace spring retainer and tighten nut five clicks, then check stud protrusion. Try to adjust to previous protrusion if it was no more than +/- .006" of .050"

8) Roll engine over till other governor spring retainer is centered in hole and repeat 4-7. When setting stud protrusion try to adjust as close as you can to the other set of springs to maintain a smooth idle.

NOTE: Idle speed may require adjustment as changing stud protrusion can affect idle speed.

Easy practically free mod that should take most anyone less than one hour and the end result is that you will not think it is the same truck :rockwoot:
 
Since the governor assembly is a balanced unit, did you weigh the washers beforehand? Seems like that would be important to me.
 
Replacement springs for the rotating governor assembly on the P7100 IP. Allows you to fuel to 3k/4k/5k RPM, depending on what set you go with.
 
Fastenal is a good place to start, I do believe that is who stocks our bolt bins in the shop...

For others who have posted, some people don't exactly have $100 laying around... As a disabled veteran money is pretty tight for me and this works pretty good, admittedly not as good as a true GSK though.
 
i got two m12s for free guy at fastenal said if its for a dodge then its free he knew what i needed them for lol but im about to put them on say about an hour of work
 
If one washer per side gets 3200-3400rpms, then would two washers per side get say 3600-3700, and three washers per side get 3900-4000? Just throwing out numbers to make my point, don't know what the actual rpms would be.

Jordan
 
mopar or no car said:
If one washer per side gets 3200-3400rpms, then would two washers per side get say 3600-3700, and three washers per side get 3900-4000? Just throwing out numbers to make my point, don't know what the actual rpms would be.

Jordan
Click to expand...

Actually, people have played around with that and found that it doesn't have much effect over just the single washer per side... Sorry, if you want more than 3200rpm you're actually going to have to spend some money. Really anything more than 3200rpm is useless because a (relatively) stock truck starts to lose power fast after that anyway.
 
ok i sorry but i do not have any way to get a m12 washer form a parts guy so can i get these washers for like home depot or ace hardware? and can someone give me exact measurements that i need like id, od, thickness. it says"I found that M12 washers with an OD of about .910" and no more than .075" (no less than .060")" but isn't .910 bigger then .075? please help kinda feeling like stupied!!:bang got this week off work and want to do this!!!!
 
covey88 said:
ok i sorry but i do not have any way to get a m12 washer form a parts guy so can i get these washers for like home depot or ace hardware? and can someone give me exact measurements that i need like id, od, thickness. it says"I found that M12 washers with an OD of about .910" and no more than .075" (no less than .060")" but isn't .910 bigger then .075? please help kinda feeling like stupied!!:bang got this week off work and want to do this!!!!
Click to expand...

I worded it wrong... Didn't proof read it good enough, the OD is .910" on the ones that I used (you don't want them any more than 1.00") and the .075-.060" is refering to the range in thickness that works best. Make sure each is the same thickness to keep your springs balanced.
 
Caution notes:
-Some pumps will hang up at 1000-1100rpm with the washer mod.
-the best shim seems to be with a 18mm OD, 13mm ID, 1.55mm thickness washer(some trimming required).
 
u are my hero i have been trying to figure that out for a year and a half seriously we need more people like u on here :clap::woohoo::thankyou2:
 
smokin binder said:
Caution notes:
-Some pumps will hang up at 1000-1100rpm with the washer mod.
-the best shim seems to be with a 18mm OD, 13mm ID, 1.55mm thickness washer(some trimming required).
Click to expand...

I found that problem easily remedied by giving the nut one more click and taking some of the idle adjustment back off to lower it. 160/175 and 180 pumps don't seem to do it as badly as the 215 pumps... Particularly the 913 pump, it seems to not like this mod AT ALL for some strange reason :bang
 
justin c said:
u are my hero i have been trying to figure that out for a year and a half seriously we need more people like u on here :clap::woohoo::thankyou2:
Click to expand...

Not a problem, but I cannot take credit for this mod. I found it when I used to be on another diesel site... I have done this to about a dozen different trucks now though, and noticed no one had posted it up here on CompD yet, so I figured I would help those who are a little cash strapped out :Cheer:
 
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