WHICH GOVERNOR SPRING SET WORKS BEST
 

I have a 98 cummins 12 valve. and I'm going to install a 3K governor spring set in also install 60# intake valve springs, I already have 60# exhaust springs. which brand would you recomend I use.

they all should qualify .... unless you have a specific brand in mind

I went with the Bosch springs. Seemed to be a good idea at the time, and no complaints. If you're only doing the 3K kit, there's no reason to do valve springs. In fact, I have the 4K kit, and I haven't done them. Just because you have a 4K kit doesn't mean it will rev that high, there's more involved with getting it to rev that high than just governor springs. I sure as hell wouldn't bother with valve springs on a 3K kit though, no matter what else you do.

Buy the PAC brake set, the come with 3k and 4k springs, and good destructions

I believe the only difference between 3 and 4K with the PAC kit is the number of springs. If someone can confirm this is the case, I would buy the the 4K kit and leave one spring out. Then when you decide you aimed too low, you can just pop the last one in and have a 4K kit.

It's actually add spring for 3k, and I can confirm it, modified a few pumps

I was pretty sure it was either put one in or leave one out...

you leave the little inner spring out for a 3k kit and install all springs for the 4k.

these folks have a good description of it and a picture. good old google

94 98 Dodge Cummins 12 Valve P7100 Injection Pump 3K and 4K Governor Spring Kit | eBay

LOL... i want the part numbers for the Pac kit if you would please .... :c:

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and there's a reason for installing heavier springs on those engines planning on seeing 4K for any leingth of time ... its called valve floating .... it will case the valve to bounce off the valve seat and can damage the valve and the cylinder head, cracking the seat or warping a valve .... The heavier VS helps control the valve more precisely, saving you a tone of parts that "possibly could be damaged" .

And its cheep insurance when u decide to slow down with a exhaust break as you will have to have them then no matter what .... usless without

HP10029PACBRAKE

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turbo 3223 might be right... with add or pull, but the directions come with... its and easy deal

might...? LOL:tttt:

LMAO !!!!!!!!!!!! :lol88:

I don't think anyone was suggesting there wasn't a good reason, only that a 4K kit doesn't guarantee you'll be able to rev anywhere near 4K. Unless you tune it to run that high, there's no reason to rip the top of the head apart for them.

and if you do run it to 4K you'll find out what carnage will happen with factory springs as well .... It's ya'lls engine's ... when it breaks ... I wont be mean but I will say " i told ya so " .... then quote you to fix it right .... lol... if you want some help that is ..Lol :tu:

no sence in not taking the proper precautions ..... its not cheep to rebuild a head and its really easy to do with the head still on ....

Mine won't even rev to 3500. Before I tune it to do so, I will do valve springs. If he has no intention of doing what it takes to even make it rev that high though, it's a waste of money. There's more to hitting 4K than a GSK, that's all I was saying.

AHH , Gotcha .... yeah I hear ya ... just warning those who dont have a Degree in all this stuff ...

Some people get a new "toy" and just wanna mash it to the floor and haul a@#... then they wana blam you and me for not warning them of the possibilitys .... so ... Warning has been posted ...LOL :tu:

Hey, better safe than sorry. Somebody's gotta say it!

would 60lb valve springs be good for the 4k gov kit also? or heavier spring?

No, 60# is perfect.

Didn't want to start a new thread so I'll ask here, has anyone just tightened the factory governor springs up around 3 clicks instead of the 3k GSK? and what was that like? What are the bad points about doing that? I'm considering it just to get a couple more hundred fueling rpms before the truck taps out. I've got a 98 w/ NVG4500, fuel plate, some AFC mods/Tuning, and 4" exhaust.

messing with the factory springs is asking for trouble u increase the chance of breaking a spring, but its ur risk ur luck might be better than mine, the best place I found for pac springs is sinister diesel u have to search for them cause there not under parts that I have found

ok, that's all I needed to hear. I'd read a couple of places about tightening down the factory springs but no mention of them breaking, I guess that's why you don't hear about it more, thanks!

just tightening the factory springs will cause poor idle quality. you can however remove the idle spring shimms so that you can clamt the spring assembly down a few more clicks and retain good idle habbits. it will be good for a few hundred more R's

Thanks, I'll try that.