How much is too much

[E7mack96]

How much power is too much for a 2001. 5 eth/dee. I already have a PM2. was considering going to PM3 adjustable. How much can the stock clutch take?

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2001 3500 QC 4X4 Cummins H. O. & 6 Speed, Powermax 2 and needing more power!!!!

 

[Wiredawg]

I think I read 600 ft lbs in one of the threads... one of the resident experts may be able to confirm.

Wiredawg

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2000 4X4 SLT QC 8' bed; 6 spd, 3. 54 ; BD exhaust brake and 4" exhaust syst; TST PM2; Airlift Super Duty rear air bags; RS 9000 shocks; pyro/boost gauges in 2 gauge a-pillar mount; back preasure gauge mounted under dash; KN air filter; Brown's Welding brush/grill guard, rear bumper & headache rack; nerf bars and aluminum roll top rear cover, Warn front receiver and Hadley air horns, 20K Reese hitch.

 

[Bigsaint]

I'm hardly an expert, but, from what I've read and from speaking with other TDR members, youre probably on the edge right now. I have a EZ box in my ETH and was told that the addition of 275 injectors would be about the max torque the stock clutch can handle. From what I understand, alot depends on how you use your truck, i. e. , pulling a load or driving empty, pulling holeshots or driving with a lite pedal. I'm putting in a Mcleod at the end of the month to pursue more power, there's other clutch options out there and more "in the works". According to Fritz's site, our clutch is rated at 550 ft. lbs. of torque which leaves little room for power upgrades. Hope this helps.

Scott W.

White 2001. 5 3500 ETH/DEE 4X4 Quad cab SLT,tow package and camper prep,Husky liners front and rear,DiPricol pyro,boost and oil temp gauges,Edge EZ,Mopar tonneau,Lund bug shield,PM tractor utility back up lights,Penda bed mat and blow by bottle is bye bye !!! I love the smell of diesel in the morning, it reminds me of... . VICTORY !!!
<A HREF="http://albums.photopoint.com/j/AlbumIndex?u=1231655&a=9089608" TARGET=_blank><font color=red>My Truck</font></A>
<A HREF="http://albums.photopoint.com/j/AlbumIndex?u=1231655&a=9089604" TARGET=_blank><font color=red>THE SAINTS</font></A>

 

[1tuffram]

This may be off subject a bit, but with all the talk about power and spinning tires has me wondering a few qestions. How much HP/torque does it take to "break traction" say if you are cruising at city speeds (35-45MPH) and punch the go pedal? Likewise for cruising at highway speeds. Finally how much HP/torque is needed to roast the tires from a stop light, once you have started forward motion and are shifting thru the gears & decide to mash the pedal ta the metal to humble that hot-rod sports car beside ya (not that I would ever want to "show-off" like that are anything #ad
) In other wards, NOT redline the tach and dump the clutch when the light turns green

I know this may sound silly, but I'm just curious.

Oh, forgot to mention, these "hypothetical" senarios assume the clutch and drivetrain are up to the task (6 speed and 3. 54 rear end ratio) #ad


[This message has been edited by 1tuffram (edited 01-14-2001). ]

[This message has been edited by 1tuffram (edited 01-14-2001). ]

 

[E7mack96]

I thought that the 6 speed could handle more power than that. Is one of the reasons I traded from that trash-matic '99. What about that dual disc setup, I'd be willing. I don't mind a stiff pedal. I drive commercial all day long. #ad


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2001 3500 QC 4X4 Cummins H. O. & 6 Speed, Powermax 2 and needing more power!!!!

 

[kevin1]

The clutch pressure is the same or less than stock I put in DDIII's the stock clutch was fine when I put in the EZ the clutch was no longer holding in the top three gears also the eth has some sort of restriction somewhere in the pump it will not put out the fuel that the etc will people are working on it but nothing yet

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2001. 5 ETH/DEE DD3's EZ HX40 machined out for more flow, Custom 4" exhaust turbo back staight pipe with 5" chrome tip in front of rear tires,spa's, mcleod clutch, more to come

 

[Diesel Guy]

From what I've heard, about 350hp/750ft-lbs is the limit of the stock clutch. That's with the DD3 package (injectors, turbo, exhaust). Then you can add a box, like their version of the EZ, or something else and really get crazy, but you'll have to do a clutch to hold it.

DD does have dyno graphs on their site of Lawrences ETH making 440hp/950tq.

 

[jkern]

1tuffram,

you forgot one major component in breaking the tires loose... the coefficent of friction that your tires maintain on the type of surface that you are on (concrete vs. asphalt) i run 33x12. 50 mud type tires that have a fairly soft compound, and it takes a h*ll of alot of smoke to break them loose on dry pavement, actually with the LSD in the rear, i really have to try to turn the tires over even running with the box on!! i usually slip the clutch before spinning the tires! not trying to discourage you, just food for thought #ad
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Jeremy Kern
1999 2500HD 4x4 QC,SB, ISB, 5spd, 3. 54LSD, 33x12. 50 cooper STT's Denver off-road bumper with Ramsey RE12000, PIAA series 520, Rancho RS9000's, heavy ft. springs, JVD Torque Enhancer, DiPricol boost and pryo gauges, and a bunch of other little things! www.geocities.com/phrn30 for pics!

 

[Bigsaint]

Originally posted by Diesel Guy

From what I've heard, about 350hp/750ft-lbs is the limit of the stock clutch. That's with the DD3 package (injectors, turbo, exhaust).

Not trying to flame you, but those figures sound way high.
Scott W.

 

[Diesel Guy]

Again, not speaking from experience here, but DD claims they got to 375hp/800ft-lbs before the stock clutch started to let go. They site "diesel driving experience" as one of the big keys in making the clutch keep working. Apparently, if you dump the clutch more like a big rig, the clutch will last longer than if you slip it like you were driving a gasser.

 

[BHORNER]

My ETH has only the EZ and supplied boost elbo. The clutch would slip if you got on it hard at low RPM. I went to McLeod and solved that problem.
Here are my dyno numbers.

Stock HP 211. 2

EZ Edge 247. 1

Stock Tq Max 468 2200 RPM

EZ Tq 627 1800

Largest HP increase 1800 RPM Stock 130 EZ 215


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Barry Horner
Lake Forest
Orange County, Ca

2001, SLT+, ETH, 6 speed, White quad cab, short bed, Sport, 2wd , 3:54 anti spin, Camper Special with trailer tow, 16x8 Forged Aluminum with 265x75 tires, Fog lights, Audio controls steering wheel mounted, AM/FM cassette with CD, Travel Convenience group, Keyless entry with remote, Leather agate heated seats. Line-X bed liner. ARE LS 2 tonneau cover. Pillar mount boost and EGT. EDGE EZ and McLeod clutch.

 

[Bart Timothy]

At first glance there appears to be large variances in what the stock ETH clutches are holding. One thing to remember is once the clutch has slipped pretty good and the facing has become glazed it won't hold as much torque as before. Seems once the thing has slipped it's never the same again. I believe that in good condition they're only good for 600 to 650 ft/lbs of real world torque inspite of what some have claimed.

One reason for this maybe the dynoing process and the actual dyno itself. After limited experience the the Dynojet, Musstang, and what ever the make dyno Cummins Intermountain uses I can say that there's big differences in dynos and the amount of stress they place on the engine and clutch. This isn't to say that one type of dyno is more accurate than another. I've noticed that many people on the TDR use Dynojet numbers and it appears by looking at the pictures that DD also uses one. What the Dynojet does is measure the acceleration of a 5000 lb flywheel to give horse power readings. The torque is calculated off that hosre power figure. I think that accelerating a rotating 5000 lb flywheel isn't going to stress the clutch as much as say pulling a 5000 lb trailer, for example, or maaybe even accelerating a 7000 lb empty truck. Again, I'm not claiming the Dynojet is at all inaccurate, but that it's not placing large torque demands on the vechile - even placing a GTech in the windshield can be a fairly accurate way of obtaining power figures and who'd ever think, just by looking at it, that it could give any kind of figures at all.

I know there have been threads in the past comparing the Mustang to the Dynojet and maybe this all has been hashed out before. Maybe some physics or dyno garu can prove or disprove my thinking.

 

[Deezul1]

Too much HP is when there no way you can step on the pedal without spinning the tires.

 

[My 6 Eats V8's Old File]

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