3K GSK question.

[moparguy]

Got em installed and you guys are right, these things are great. However, now I've got a real rough shaking miss in neutral starting at about 1800 RPM and it only gets worse at higher RPM, again, that's sitting still in neutral.



Runs and pulls great going down the road, had it up to about 32 or 3300 RPM so far, that's likely all I'll ask of it. But man, it's like a different truck. I now see a bigger turbo in the future.



Now for the question, I remember Hemi Dart, saying you either tighten or loosen the springs to lower the idle, I picked up about 150 or so RPM. Anyone know which way is right?.



Also, any thoughts on the extremly rough no load situation?



Thanks, Ronnie

 

[HoleshotHolset]

The rough no-load situation is thanks to our really small delivery valves installed in the '94-95 P7100..... it tends to get worse anytime fuel is increased in any way. Larger delivery valves will remedy this.



On the governor springs..... If I remember correctly... ... too tight = lower idle speed, too loose = higher idle speed.



If you go too tight (within reason. . )... . supposedly there is no harm done... you just get even more fuel... and you end up raising the idle up a tad to compensate. Mine were too tight... I raised the idle... . it starts much easier... . runs like a Greyhound dog... and no problems at all.



The Governor Spring Kit from Piers is where it's at. If you don't have one, you're not driving your Cummins around the way it SHOULD be setup from the factory.



Matt

 

[bighammer]

I just ordered one. Can't wait to get it and try it out. All I hear are good things.

 

[Cooker]

bighammer,



Maybe after you insall yours, I can head up that way so you can help w/ mine



Take it easy,

Ryan

 

[bighammer]

A northern MI BOMBing party. What a great idea! Oo.



I talked to Piers and he suggested going thru the top and check the governor lever and cam plate relationship at the same time. From my descriptions, he thinks mine might be off. I'm not crazy 'bout the thought of removing that side plug, anyway.



It's going to take a couple weeks to get the parts and maybe the snow will finally be gone. (Just got about 3 more inches today)

 

[Deezul1]

If you set the springs too tight you will get throttle surge especially in 3rd gear in a 5spd. I had to loosen mine up and then reset the idle.

 

[Cooker]

I know what you mean about removing that side plug



I wish I had more of a chance to see how the install went that day. Either way, through the top sounds much better.

 

[JGK]

Holeshot,



I THINK you have it just backwards. Too loose, and the governor weights will fly out at low revs and restrict fueling even further. Tighten them to keep the weights in to let the revs come up before the governor begins defueling at a given RPM.



Somebody set me straight if the martini is skewing my logic.



-Jay

 

[HoleshotHolset]

Hrmm... . there is the chance that we're both wrong.....

I've been wrong before... . many times.



Matt

 

[moparguy]

Thanks for the replys.

I just reset the idle, everythings OK now.



Just to add to the info pool, I removed the side plug first, as I saw how things worked, I then removed the cam plate and actually changed the springs from the top. While I was in there I slid the #5 plate another tenth or so and checked the governer lever adjustment, it was dead on.



The side plug was a small PITA to R&R, but not to bad, The real PITA was the back bolt that holds the fuel solonide bracket.



If I do another, I'll go in from the top. And as others have said, if you haven't sent Piers your money, JUST DO IT, trust me, you'll like it.

 

[Ben Rumson]

higher idle...

After I installed mine, it idled about 150 - 200 rmp faster. I called Piers and he said that the higher idle was because the springs were slightly tighter that the old - ie too tight



However, he said that 150-200 wasn't worth going back into the housing to loosen them one click. He said to change the idle screw if was bothering me.



Spring tightness settings can be off a click either way from what they were stock and still be OK. One click tighter than stock will slightly increase the idle (no harm) OR heavier/newer springs with the exact same nut settings may run a little tighter (small rmp increase) than stock.

 

[Bandit1]

how had is the install, i jsut put in a #5 plate and tighten my stock springs one click. i looked down through the top of the pump and it looks like it would be a b!tch, plus if you dropped somethign it would be near impossible to get it out. jsut wanted to know b4 i purchased these in the future.

 

[gitchesum]

A good magnet should keep that from happening.

I'm installing mine this weekend, should have some pretty good pics taken while I do it.

 

[LI Camper]

I took one look in from the top and almost quit. I couldn't see how the job could be done without dropping something. I then cut the wire on the side and went in through the plug, it was much easier to get to. Now having done the job once I say if you don't mind voiding the warranty go in through the side, you can't mess up. If you don't want to cut the wire then the top isn't all that bad but you need a steady hand. If going in the top was the only way, you could do it, just take your time and have a good magnet. Remember, look how many people have done this job, have you read any posts about problems? This is the best thing I have done to my truck so far. Good luck.

 

[bighammer]

I was looking at a drawing of the governor (pretty cool diagram--if anyone wants a copy, email me)and it looks like things would be a long way down in there. It's a bigger hole on top, but you have to work deeper in. I've got to check my governor lever adjustment, but I might do mine from the side too.

 

[HoleshotHolset]

I've done 3 sets... . all from the side plug. I've only dropped one spring seat... . and a good magnet picked it out of the engine oil soup down inside the pump... .

My $. 02 worth... . I recommend doing it from the side plug.

Matt

 

[nfox]

3000rpm gsk

How long does it take a first timer to install these awesome springs? Is it easier to go through the top or the side plug? Tdr Rules!!Oo. Oo. Oo.

 

[RBrunson]

Side plug

I choose to use the side plug. Done the whole thing by myself, I used a mirror aimed at the hole while I turned the engine over by the fan nut to line up the springs. All went fairly good untill I tried to reinstall the plug. No one mentions it but the linkage for the fuel solnoid is very close, at least on mine, took meny trys and lots of patience to get it back on.





All I can say is I wish I had done this first. What a differance it makes. Top end jumped from 93 to 107mph, watch thoes EGTs thoe, it will warm up fast. Pulls strong right up to 80.



All I wanted in the begining was a good dependable truck to pull my RV, and then I heard about the TDR and now I am on that slippery slope of the need for just a little more power. I wonder what would happen if I dropped in a set of injectors.

 

[Koa Man]

I went in thru the side plug. I agree that getting the plug back on is very tricky. Seems like it didn't want to thread. Took me almost 10 mins. playing with it by feel before I felt the threads grap. I read somewhere that a member took off the front tire and plastic inner fender liner to get a clear and open shot at the side plug. Piers says it should take a first timer about 1. 5 hours.

 

[pwknapp]

Go in from the side. Second time when I had to adjust them I just took the fuel shut off linkage off and that made the plug issue much easier to deal with. Still have a little rumble at real low rpm especially when slowing down and then adding fuel in third gear. Scared to back off one more click on the spring nut cause there is just about 1. 5-2 threads left. I think you are right about too tight raises rpm and visa-versa. JM . 02