Can't get to 3 k

***CumminforCummins*** · 11-02-2009, 10:55 PM

When launching after about 2k i can't seem to get any higher without making my boost gauge which is 30 psi. I'm hearing I shouldn't be going any higher than that psi really on a stock turbo. I'm running a #0 plate almost full foward.

Got the same truck setup as this guy does on the video only i'm 4wd not 2wd. Does this make a big difference?

It seems if I try to go fast, the rpms don't go up quickly like his do. And before my rpms go up i hit full boost and i really don't wanna have to do a headgasket.... any insight?

YouTube - Cummins Acceleration 12V

Thanks!

__________________

6 In a Row ... the way to go... 97 2500 not stock.

***CumminforCummins*** · 11-03-2009, 11:06 PM

No one has any insight for this ?

__________________

6 In a Row ... the way to go... 97 2500 not stock.

Badger · 11-03-2009, 11:22 PM

Obviously he has a gsk upgrade do you know if he has studs, fire rings, etc?

__________________
95 CTD 2500 STD Cab 4X4, KDP Tabbed, Boost/Pyro, AFE Stage II, 4" MBRP Exhaust, ATS Exhaust Manifold, BD T/C and Trans w/ Torq Loc, DDP STAGE II INJECTORS, #10 PLATE, CFM+ Intake, HID Head lights, ROL BAK Cover, 2" leveling Kit

wyldemannn · 11-03-2009, 11:25 PM

Dunno. My truck hits 35psi easily at anything under 2k rpm, but my egt won't go over 1000deg no matter what I do short of pulling a load. I'm pretty sure my wastegate is toast. However, its doing a great job of cleaning up the soot; only a light haze at that egt and haulin @ss!

__________________
"My job? Unscrewing things around here."
'95 2500 CTD auto, now NV4500HD,Plate MIA, AFC FF, single 5" Stack, BHAF, boost/egt, 20% WMO/SVO mix, soon to be dana 80 and dually

**carolinarednek** · 11-03-2009, 11:28 PM

Quote:

Originally Posted by Badger

Obviously he has a gsk upgrade do you know if he has studs, fire rings, etc?

He definately has to have a GSK to run that kind of RPM. I have a $KGSK that I just installed 2 days ago, and with my current mods, it really goes through the RPM like crazy!!

__________________
1996 Dually 4x4, 315/75R16 BFG KM2's, auto with Goerend Triple Disc, BD valve body ,torque-lok and pressure lok, banks twin ram, no plate, 4K GSK, Delivery Valves Clocked, No AFC Foot, BHAF, 6" miters
South Carolina Chapter Co-President

Carolina Cummins Club

***CumminforCummins*** · 11-04-2009, 08:40 PM

Does the GSK kit make the boost spike easier?

I though he had a GSK. How much do these cost and how hard are they to install?

__________________

6 In a Row ... the way to go... 97 2500 not stock.

**carolinarednek** · 11-04-2009, 08:45 PM

The GSK jst gives you more a more useable RPM range. Instead of the truck starting to defuel around 24oo RPM, it'll keep fueling on up to 3000 RPM or 4000RPM. Depends on which ones you go with. I bought mine from Cox Diesel Performance. They are Pacbrake springs. I paid $85 for them. Most of the others are anywhere from $120-$140. I installed them, and as long as you follow the directions, it's not bad at all. Just gotta make sure that the spring shims don't fdall into the bottom of the pump.

__________________
1996 Dually 4x4, 315/75R16 BFG KM2's, auto with Goerend Triple Disc, BD valve body ,torque-lok and pressure lok, banks twin ram, no plate, 4K GSK, Delivery Valves Clocked, No AFC Foot, BHAF, 6" miters
South Carolina Chapter Co-President

Carolina Cummins Club

***CumminforCummins*** · 11-04-2009, 08:55 PM

I really see bad things happening when I install this LOL...

I heard if you go to 4k springs than you will need to upgrade your valves to the 60 lb valves. Is this true?

And with a 4k kit is it safe to wind it all the way up to 4k on the rpm tach?

Seems like its crazy loud and screamy for a truck like this....

Probably gonna go with the 3k.... Good upgrade?

__________________

6 In a Row ... the way to go... 97 2500 not stock.

ISX · 11-06-2009, 11:40 AM

Hmm, that is my vid and my truck lmao. I do NOT have a GSK. It does defuel around 2700. I build just shy of 35psi but at 3000rpm I am at 22psi.. See if yours does 70 at 2100 like mine does, yours is probably a lot lower, my tires are only 245/75's causing it to act like it has 4.10's even though it has 3.54's. I can make a better movie just tell me what you want to see.

__________________
1990 F250 7.3 IDI NA auto 4x4 250k
1997 2500 12V Cummins 5spd 2wd 311k miles #100 plate, SB Con O, 26.6MPG-55mph

***CumminforCummins*** · 11-08-2009, 01:52 PM

Oh well I got 285's for tires and I got a 4wd probably making it a big difference in being able to click the rpms like that... hmmmmm.

__________________

6 In a Row ... the way to go... 97 2500 not stock.

ISX · 11-08-2009, 10:25 PM

Yeah I'm guessing you do 70 around 1800 or so. Mine is topped out at about 100, I made a couple more vids of it showing how it doesnt have max fuel at 3000rpm and another crappy 0-60 run, I'll try and get them uploaded tonight.

There YouTube - 0-60 and top speed cummins 12v

__________________
1990 F250 7.3 IDI NA auto 4x4 250k
1997 2500 12V Cummins 5spd 2wd 311k miles #100 plate, SB Con O, 26.6MPG-55mph

Last edited by ISX : 11-08-2009 at 11:04 PM.

bart9505 · 11-09-2009, 05:42 PM

Ive seen some threads in here about some adjustments to the mechanical governor components, to compensate for the wear and get it closer to the original defuel at 2600 and limit to 3000. Won't compete with a kit, but simpler and cheaper if you have time but not money.

__________________
New: 2008 black MegaCab, 6.7, 4x4, auto, stnd gears, no performance mods, only 14k miles so far
Old: 1997 extended 5.9, 4x4, 5sp, 150k miles, mostly stock but added edelbrock shocks

11-02-2009, 10:55 PM	#1 (permalink)
*CumminforCummins* Cummins Tech Join Date: Sep 2007 Posts: 352 Thanks: 4 Thanked 3 Times in 3 Posts CumminforCummins's Truck Pics	Can't get to 3 k When launching after about 2k i can't seem to get any higher without making my boost gauge which is 30 psi. I'm hearing I shouldn't be going any higher than that psi really on a stock turbo. I'm running a #0 plate almost full foward. Got the same truck setup as this guy does on the video only i'm 4wd not 2wd. Does this make a big difference? It seems if I try to go fast, the rpms don't go up quickly like his do. And before my rpms go up i hit full boost and i really don't wanna have to do a headgasket.... any insight? YouTube - Cummins Acceleration 12V Thanks! __________________ 6 In a Row ... the way to go... 97 2500 not stock.

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11-03-2009, 11:06 PM	#2 (permalink)
*CumminforCummins* Cummins Tech Join Date: Sep 2007 Posts: 352 Thanks: 4 Thanked 3 Times in 3 Posts CumminforCummins's Truck Pics	No one has any insight for this ? __________________ 6 In a Row ... the way to go... 97 2500 not stock.

11-03-2009, 11:22 PM	#3 (permalink)
Badger Cummins Fan Join Date: Nov 2007 Location: San Diego, CA Posts: 67 Thanks: 12 Thanked 1 Time in 1 Post Badger's Truck Pics	Obviously he has a gsk upgrade do you know if he has studs, fire rings, etc? __________________ 95 CTD 2500 STD Cab 4X4, KDP Tabbed, Boost/Pyro, AFE Stage II, 4" MBRP Exhaust, ATS Exhaust Manifold, BD T/C and Trans w/ Torq Loc, DDP STAGE II INJECTORS, #10 PLATE, CFM+ Intake, HID Head lights, ROL BAK Cover, 2" leveling Kit

11-03-2009, 11:25 PM	#4 (permalink)
wyldemannn Cummins Fan Join Date: Sep 2009 Location: Greenville, NC Posts: 34 Thanks: 0 Thanked 0 Times in 0 Posts wyldemannn's Truck Pics	Dunno. My truck hits 35psi easily at anything under 2k rpm, but my egt won't go over 1000deg no matter what I do short of pulling a load. I'm pretty sure my wastegate is toast. However, its doing a great job of cleaning up the soot; only a light haze at that egt and haulin @ss! __________________ "My job? Unscrewing things around here." '95 2500 CTD auto, now NV4500HD,Plate MIA, AFC FF, single 5" Stack, BHAF, boost/egt, 20% WMO/SVO mix, soon to be dana 80 and dually

11-04-2009, 08:40 PM	#6 (permalink)
*CumminforCummins* Cummins Tech Join Date: Sep 2007 Posts: 352 Thanks: 4 Thanked 3 Times in 3 Posts CumminforCummins's Truck Pics	Does the GSK kit make the boost spike easier? I though he had a GSK. How much do these cost and how hard are they to install? __________________ 6 In a Row ... the way to go... 97 2500 not stock.

11-04-2009, 08:45 PM	#7 (permalink)
carolinarednek SC Chapter Co-President Join Date: Jun 2007 Location: Liberty, S.C. Posts: 1,099 Thanks: 1 Thanked 3 Times in 3 Posts carolinarednek's Truck Pics	The GSK jst gives you more a more useable RPM range. Instead of the truck starting to defuel around 24oo RPM, it'll keep fueling on up to 3000 RPM or 4000RPM. Depends on which ones you go with. I bought mine from Cox Diesel Performance. They are Pacbrake springs. I paid $85 for them. Most of the others are anywhere from $120-$140. I installed them, and as long as you follow the directions, it's not bad at all. Just gotta make sure that the spring shims don't fdall into the bottom of the pump. __________________ 1996 Dually 4x4, 315/75R16 BFG KM2's, auto with Goerend Triple Disc, BD valve body ,torque-lok and pressure lok, banks twin ram, no plate, 4K GSK, Delivery Valves Clocked, No AFC Foot, BHAF, 6" miters South Carolina Chapter Co-President Carolina Cummins Club

11-04-2009, 08:55 PM	#8 (permalink)
*CumminforCummins* Cummins Tech Join Date: Sep 2007 Posts: 352 Thanks: 4 Thanked 3 Times in 3 Posts CumminforCummins's Truck Pics	I really see bad things happening when I install this LOL... I heard if you go to 4k springs than you will need to upgrade your valves to the 60 lb valves. Is this true? And with a 4k kit is it safe to wind it all the way up to 4k on the rpm tach? Seems like its crazy loud and screamy for a truck like this.... Probably gonna go with the 3k.... Good upgrade? __________________ 6 In a Row ... the way to go... 97 2500 not stock.

11-06-2009, 11:40 AM	#9 (permalink)
ISX Diesel Freak Join Date: Mar 2006 Location: Missouri Posts: 815 Thanks: 0 Thanked 2 Times in 2 Posts ISX's Truck Pics	Hmm, that is my vid and my truck lmao. I do NOT have a GSK. It does defuel around 2700. I build just shy of 35psi but at 3000rpm I am at 22psi.. See if yours does 70 at 2100 like mine does, yours is probably a lot lower, my tires are only 245/75's causing it to act like it has 4.10's even though it has 3.54's. I can make a better movie just tell me what you want to see. __________________ 1990 F250 7.3 IDI NA auto 4x4 250k 1997 2500 12V Cummins 5spd 2wd 311k miles #100 plate, SB Con O, 26.6MPG-55mph

11-08-2009, 01:52 PM	#10 (permalink)
*CumminforCummins* Cummins Tech Join Date: Sep 2007 Posts: 352 Thanks: 4 Thanked 3 Times in 3 Posts CumminforCummins's Truck Pics	Oh well I got 285's for tires and I got a 4wd probably making it a big difference in being able to click the rpms like that... hmmmmm. __________________ 6 In a Row ... the way to go... 97 2500 not stock.

11-08-2009, 10:25 PM	#11 (permalink)
ISX Diesel Freak Join Date: Mar 2006 Location: Missouri Posts: 815 Thanks: 0 Thanked 2 Times in 2 Posts ISX's Truck Pics	Yeah I'm guessing you do 70 around 1800 or so. Mine is topped out at about 100, I made a couple more vids of it showing how it doesnt have max fuel at 3000rpm and another crappy 0-60 run, I'll try and get them uploaded tonight. There YouTube - 0-60 and top speed cummins 12v __________________ 1990 F250 7.3 IDI NA auto 4x4 250k 1997 2500 12V Cummins 5spd 2wd 311k miles #100 plate, SB Con O, 26.6MPG-55mph Last edited by ISX : 11-08-2009 at 11:04 PM.

11-09-2009, 05:42 PM	#12 (permalink)
bart9505 Cummins Enthusiast Join Date: Oct 2007 Location: Tacoma Posts: 288 Thanks: 0 Thanked 0 Times in 0 Posts bart9505's Truck Pics	Ive seen some threads in here about some adjustments to the mechanical governor components, to compensate for the wear and get it closer to the original defuel at 2600 and limit to 3000. Won't compete with a kit, but simpler and cheaper if you have time but not money. __________________ New: 2008 black MegaCab, 6.7, 4x4, auto, stnd gears, no performance mods, only 14k miles so far Old: 1997 extended 5.9, 4x4, 5sp, 150k miles, mostly stock but added edelbrock shocks