Engine/Transmission (1994 - 1998) Spring Kit

[TPotter]

Where can I buy the 3000 Gov. spring kit??

 

[CNichols]

www.piersdiesel.com

 

[TPotter]

Can you order off the webpage or do you have to call it in?

 

[CNichols]

I think you have to call it in to them.





There are other places to get it though



https://www.turbodieselregister.com/cgi-bin/links/dclinks.cgi?action=view_category&category=Engine+(Performance)

 

[TPotter]

Thanks, I called in my order... I hope they make some difference.

 

[CNichols]

No problem

 

[SWendell]

I got one from TST, theirs was the least expensive GSK I could find.

Scott

 

[TPotter]

What will I get from having the GSK installed?

 

[TPotter]

I hope the GSK makes a difference, I have read a few posts that say it hurts low end power etc. I do tow a 10,000 5th wheel. Did I screw up buying these?

 

[DSiemens]

Absolutely one of the best mods for a 12 valve. Installation is easy. The PDR GSK comes with instructions. I really like GSK.

Did not hurt my low end power at all, nor did I have to adjust the idle speed. Sweeeeeetttt!!!

 

[Got Smoke?]

Originally posted by TPotter

I hope the GSK makes a difference, I have read a few posts that say it hurts low end power etc. I do tow a 10,000 5th wheel. Did I screw up buying these?

Did you screw up in buying these! In a word NO! :-laf



They should be standard on a 12 Valve Cummins! I know I LOVE mine, but I was running 33" tires that came on the truck and whenever I towed I was always having to go back and forth between 4th and 5th gears because of my 3. 55 gears & the 33's. 3K GSK fixed that problem!



You WILL NOT regret buying these! Oo.

 

[SWendell]

TST instructions said to go through the top of the pump, which I tried, but couldnt get all the parts out. I ended up putting it back together and going in from the side. Much easier! Just keep a look out for the tiny woodruf key from the throttle linkage. I didnot know about it, but apparently I had a guardian angel, because somehow it ended up on my magnet (which I wasnt using at the time) after all the parts fell through the engine compartment. I didnt know what it was and set it aside. While reinstalling the linkage it became apparent what it was. Its about the size of your pinkie's finger nail tip!

I wasn't sure what was meant by "defueling" at higher rpm's, but with the 1st test drive w/ the GSK... Oh yeah!! ... pulling hard well over 3000!

 

[SBrandon]

I just bought a 3k gsk kit from piers,, they just went on sale to $125. 00 and because Im a tdr member I got $10 more off...

 

[krs]

tpotter,

You didn't screw up. Here's some threads on them with both methods described:

https://www.turbodieselregister.com...id=61315&sortby=lastpost&sortorder=descending

 

[TPotter]

Great, glad to hear I should like them. Now the next question, right now cruising down the road at 70mph my ect's are at 550 to 600 is that about right??? Will the GSK increase my temp's?

 

[mikel]

The GSK will not increase your cruising temps.



If you've got your foot in it you will see the EGT's go up as the RPM goes up. I don't think these trucks breath too well over about 2500 RPM.



Mike

 

[TPotter]

I am thinking that they will get pretty high when towing my 5er. Should I request my timing be bumped up? I see yours is at 15. 5

 

[TPCDrafting]

It won't add any more fuel. It just won't de-fuel at higher rpms for instance mine would de-fuel at 2600 rpm and I wasn't getting any acceleration after that all the way to 3000. Now, it accelerates evenly all the way to redline. This helps when climbing a hill pulling your trailer. You will have better luck getting the next gear to hook up and go without having to down shift immediatly again. It is a very nice addition and I agree, should be standard on all 12 valves.

 

[JohnE]

True, GSK doesn't add fuel, but it can put your fueling curve in the wrong place (engine rpm) depending on which plate is installed. That may cause increased EGT if ou have to go above 2500 rpm to hit the sweet spot.



I added GSK to a stock plate and max hp was at 3100 rpm.

I changed to a #4 plate and it put my hp peak at 2300 rpm. I also roasted the stock TC clutch.



Advanced timing is great for any truck, but essential for a truck with GSK. It also helped the winter sluggishness.



I don't know which plate you have installed, but a change to a #10 or #4 is really needed to compliment the GSK.



Another plus to GSK is they compliment the early P7100 pumps. A click tighter on the stock springs may do the same as the factory setting was too loose and caused the infamous throttle surge.



One downside of GSK is a throttle flutter or rpm blip when you relase the go pedal and the engine rpm drops to idle. It is annoying to me, but harmeless. To a buddy with his manual, it will kill his engine if cold. (We are talking ND/MN winter cold, too!)



I enjoy having a truck that drives better in the winter and fuels hard to 2500 and let my foot be the governor.....