Engine/Transmission (1998.5 - 2002) Stock turbo, max h.p.?

[jwinnie]

I think RabidRam has been pretty lucky with his setup.

I can push my pyro past 1200deg running empty with just DD2's and the Pmax3 off at about 27psi boost. With the Pm3 on, the pyro will creep past 1600deg in a few short seconds at about 38psi.



John

 

[Gary - K7GLD]

WELL, I'll stick my foot in it again...



I dyno'd 311 HP and 725 Tq with only the Comp - on 5x5 - I tow about 8000 lbs or 15,000 GCW with this setup, no problem. With my foot to the wood up long grades, I *never* see more than 1200 EGT - and *thought* that DDII's and a well designed 4 inch exhaust would still allow that same controlled EGT, but with added power somewhere up close to the 400 HP mark. If my assumption is incorrect, as determined by those who have actually USED the combo I specified, I'd sure like to hear about it - might save me some $$$...

 

[KLockliear]

Gary, you won't control the EGT's with a Comp on 5 and DD2's with a stock HX35. The drive pressure heads to the moon and EGT's follow beyond 350hp. 400-425 is achieveable on the dyno, but not useable on the road.



YMMV.

 

[jtisdale]

Originally posted by RabidRam

With a stock turbo, DD SuperMentals, and a Blue Chip FMS fueling box cranked to the max... but my EGT's have never gotten over 1100.



Hope this answers your question,



Dave

Dave, You may want to check your pyro to be sure its accurate. With a stock turbo, FMS (on kill) and SM's, you should be able to bury your pyro within 50'.



I already know my pyro is junk, has been since I got it, but I just found out lately. With whats in my sig, and my UFM on kill, I never see over 1400... but we all know thats not correct. As far as numbers for my set-up, I'll let you know after May 24th, but I am guessing close to 400.



Jason, you can get away with big injectors and a big box, you just have to use your head and your right foot to control EGT's. Its just like Keith said, its not really usable on the street due to excessive EGTs.

 

[JyRO]

Thanks fellers...

Keith - Yeah, that's the kind of useable info I am looking for. If 400 h. p. is not useable towing a 10k# 5'er, with a stock turbo, then that is not the direction I want to take.



I'm putting down about what Gary's putting down, but maybe a skosh less than him. So if I could gain about 50 h. p. or so, I'd be happy.



I've been emailing with Rusty, and got his feedback on his combo. From what I'm learning, it looks like I may be interested in just adding a set of EDM injectors to what I've already got.



So far in about 25k miles with EZ & 275's, I'm not having any clutch issues. But I've got one of the early ETC's with the slightly more durable clutches (at least that's what I've heard ... is that that 2001. 5 ETH & ETC clutches were not quite as strong as the previous ones). So I think I'd like to try going to the EDM injectors.



I couldn't find any info about the EDM injectors on the DD website. Can you PM me Keith? Thanks.



jtisdale - Thanks for the advice. I think I'll stick to the EZ for a while yet. But like I said above, I may be interested in stepping up to the EDM's. As you guys know by now, I'm pretty slow to jump in to the bombing bug, plus I'm so tight my ass squeaks when I walk. Actually I'm not that tight, I just find other things to spend my money on. Cause I'd like to keep my truck very useable in heavy tow mode, reliable, but very able to whoop any stock diesel or at least give a good run. Shoot, I've only had it 4. 5 years, its still new to me. I still have *at least* 5. 5 years left with it. I'm shooting for 10. 5 years left with it. Anybody heard what the spec's are gonna be on the 2015 models?



- JyRO

 

[RabidRam]

Originally posted by jtisdale

Dave, You may want to check your pyro to be sure its accurate. With a stock turbo, FMS (on kill) and SM's, you should be able to bury your pyro within 50'.

jtisdale,



I'm in some serious dookey if that's true. I've made MANY, MANY runs way longer then 50' with the box on kill. You (or anybody reading this) think that I should take it easy until I know my pyro is OK? I haven't heard/seen/felt any signs of damage (yet), so hopefully my pyro is right. Still, I appreciate you giving me the head's up. When I stock-pile some cash, I'm thinking of changing my setup anyways... maybe a Drag Comp and some analog gauges. I like to watch the needles dance...



Thanks again,



Dave

 

[KLockliear]

Re: Thanks fellers...

Originally posted by JyRO

I couldn't find any info about the EDM injectors on the DD website. Can you PM me Keith? Thanks.

- JyRO

That's 'cause we don't offer EDM's.

 

[isb360]

With the PM3 on #6, I can pull 1400 EGT's going up a hill with the hammer down. I'm expecting the problem will get worse when I install the Mach II's that are on the dining room table. My plan is to ratchet down the PM3 to find a useable combo with the Mach II's. I'm empty most of the time and (so far) have managed to reasonably control the EGT's with my right foot.



I was looking for a combo that would work ok with stock turbo (carefully monitoring EGT's), but would also gain enough benefit from a hybrid combo that I could do it without swapping to bigger injectors. We'll see how it works out.



OEM Clutch has 113k on it including 3k with PM3 on #6 and although I will replace it with an appropriate SBC when it goes, I would like to have it live as long as possible.



I'm hoping to dyno the truck before injectors go in so I can baseline it and check the delta.



Tim

 

[AC]

Jyro,

I'm running DD2's and an EZ and find it to be an ideal towing/run around town combination. I towed my cab over and horse trailer ( about 13k) over Snoqualmie Pass this weekend and never got above 1050 on the pyro.

I did have to replace my clutch when I put in the injectors due to slippage but I was planning for it anyway. I went with the SBC CON-O. It has an excellent feel to it and will hold up to 400 hp.

You might see if you can find used injectors. I got mine for $325 along with a used EZ for $275. All in all, a nice upgrade without much hassle or expense



AC

 

[JyRO]

AC - You're on my kind of budget. I'm not wanting to replace the clutch so DD2's I guess is too much for me. Right now I'm running an EZ with RV275's. It seems that this is about the most trouble free / low cost / heavy towing useable combo that I've heard of. And so far the stock clutch is holding, and the combo has given me no trouble, and is fuel efficient. Even with your DD2's you had to do a clutch. I'd like to avoid that for as long as possible. I'm going to check into the EDM injectors, but I am going to try not to sacrifice the clutch.



- JyRO

 

[Gary - K7GLD]

WELL, my clutch is already slip-city on anything above level 1 on my Comp - I suppose the addition of DDII's and a bigger exhaust system are still do-able, as long as the Comp is held to lower levels towing longer grades - still should get a significant power increase over what I have now - but the new SBC CON OFE hasta come first...

 

[JyRO]

Yeah Gary, looks like its clutch city for you. Maybe any more h. p. and I may be getting a clutch too. Maybe I should just settle for what I have. Yeah, maybe so, because I just saw another Cummins Ram I'd like to add to the fleet. I might rather have two Rams versus 1 hot rod Cummins. Hmmm.



- JyRO

 

[amillstream]

Klockleir is right. 325-350 is about max on usable hp. I get along good with the comp on 2x2 or lower when towing but egts were getting a little warm (not bad, 1300-1325), even on 1x1 on a hard pull before I went with the scotty and 4" exhaust, but rarely see over 1200 with loads 15000lb or less. I'd say dd2's and a comp is right there at the most mods a person could get by with and still have access (turn the box down or off) to usable hp with stock turbo.

 

[BTowler]

JyRO,

If you decide to change your injectors I might be interestred in your 275's. PM me if you do.

Bruce

 

[PRout]

Running about 340HP (estimated - DD3's & VA), stock HX-35 turbo, stock exhaust w/ muffler removed, resonator inline.



Get about 34 psi boost max.



Highest unloaded EGT I could get was 1200 yesterday, rolling on in high gear (pulled good though )



While towing heavy in the past, you DO need to watch the gauge, because 1300 is easy to exceed, but is controllable w/ the pedal, while keeping the revs up. Still, plenty of pulling power. No need to abuse the equipment anyways.



Bottom Line: To use all the power while towing it needs a bigger turbo. Unloaded its no problem, but does smoke (on demand ).