4500 RPM from HPCR?

[Smokin Dodge]

Wow this started out as a good thread now it has went to garbage.

 

[Vaughn MacKenzie]

Vaughn, unless it's hydraulic, pneumatic, or electric it's not a Motor. Sorry one of my pet peeves

heh. . . ya got me there NYoest. . . when you're converting a substance into usable energy it takes an engine to do that.



hasselbeck, I've always considered "RPM" assumes the plural. . . "Revolutions Per Minute. " http://www.cas.org/ONLINE/standards.html

If you say revolution(s) per minute and pluralize "revolution" it would be like "RsPM. " "RPMs" would be like "Revolutions Per Minutes"



Maybe a better grammatical way to talk about my engine's speed is "What sort of revs does Vaughn's engine turn?" or "What's the RPM range of Vaughn's Cummins?"



Anyway this has been a fun little discussion

 

[Vaughn MacKenzie]

So when I'm motoring down the highway at 2,200 RPM's, I'm actually engining down the highway at 2,200 RPM. Cool.

Yer funny Les. . . next time I'm out on the highway I'll stop at an Engine Inn, might get in on an enginecade somewhere, and make sure before I go I stop by the DEV (Dept. of Engine Vehicles) to get my license tabs updated :-laf

 

[DBraunig]

How did my thread turn into this? nevermind i'll try to find out elsewhere. thanks for the english lesson, Dave.

 

[TSterner]

dave. as of right now there aren't many options for that kind of rpm. they will be out soon though i believe. i think you will find that without some other big mods the rpm increase will be useless. imo



ted

 

[Tomeygun]

How did my thread turn into this? nevermind i'll try to find out elsewhere. thanks for the english lesson, Dave.

Woah slow down. . The reason this thread got off track is the truth is that publicly NO ONE knows how to raise the RPM limiter on the CR



EDGE claimed to have the ability, and TST said that at 3300 rpm, that the factory pulse is 0, well you cant exactly extend that



This problem will have to be in the form of a ECM reflash/downloader, I am sure that somewhere in the big ol' U. S. A there is a guy(s) working on this reflash... But until that company steps forward we have a 3150 rpm motor



(and even if some CR's are pulling 3500+ rpm, I doubt they make HP at that RPM on the DYNO)



Trust me, I CAN'T WAIT will that mod is available!!!!!!!



PS - then the cam issue becomes even more important

 

[lmills]

of course we still have Marco!

 

[thejeepdude]

Vaughn, unless it's hydraulic, pneumatic, or electric it's not a Motor. Sorry one of my pet peeves

Not true. A motor is technically any device that produces motion.



From Webster's dictionary:



Main Entry: 1mo·tor

Pronunciation: 'mO-t&r

Function: noun

Etymology: Latin, from movEre to move

1 : one that imparts motion; specifically : PRIME MOVER

2 : any of various power units that develop energy or impart motion: as a : a small compact engine b : INTERNAL COMBUSTION ENGINE; especially : a gasoline engine c : a rotating machine that transforms electrical energy into mechanical energy

 

[TSterner]

oh i think they still make good power up in the rpm range. like the older ones. and yes the cam issue becomes serious with the stupid stock grind they have. but the valve train wont like the new cam with out help.



ted

 

[AKAMAC]

Ted it sounds like you are up to some neat stuff on the CR engine. Be sure to keep us updated. Mike



PS. Might move this to the comp forum.

 

[J.Davy]

I talked to Mark at TST yesterday and he said at one point his son in law had something figured on this subject but he no longer works there. He may get someone else to carry on from where he left off.

 

[Diesel Nut]

Pacific makes a downloader that adds like 200 hp to the 03, more to 04. 5 up and raises the RPM limit to 3700 fully fueled! Defuels about 3700 to the 3800 redline (with the programmer). only downside, not adjustable, but with a tst or something, download a mild program (like stacking with BBDL) and use the RPM limit adjust.

 

[DBraunig]

Thanks for all the replies, looks like it was a question worth asking. Dave.

 

[Tomeygun]

Pacific makes a downloader that adds like 200 hp to the 03, more to 04. 5 up and raises the RPM limit to 3700 fully fueled! Defuels about 3700 to the 3800 redline (with the programmer). only downside, not adjustable, but with a tst or something, download a mild program (like stacking with BBDL) and use the RPM limit adjust.

Update:



As much as I hate Downloaders, That is the only way to raise the rev limiter so far... .



WELL... I just got off the phoine with Ian at PPE, and I told him that there might be a good market for a DL'er with ONLY the rev limiter function, No power increase. I dont want to drop another $600 for the full-blown PPE



He asked me if there would be a enough people that would want this item (for a better cost, not $600 - to only use like 20% of the Dl'er ability)



SOOO..... What do ya'll think?



EDIT- BTW this is not the only company I have talked to about this, The other one is working on a program for 4500 RPM for sledpulling, So this is looking like very positive

 

[JasonCzerak]

I'm interested in the higher RPM should I not have to change any hardware and I'm sure that nothing will vibrate apart.



I'm looking to get above 108mph on stock tires.



better 1/4 mile times will be had with this with less shifting.



And the claims that PPE have, 300 more HP with the uploader/downloader? stock parts? How is this possible, I know with the normal Juice+attitude at WOT at 2500+ RPM my smoke screen is a brown haze at 35psi. What do they do dump enough fuel to create a black cloud at 35psi to create that much power?



I'm still planning to just get the HOT juice upgrade with a new clutch and FASS installed and leave it at that for power.



Tho, I do have kinda a goal, be faster then the fastest production truck. So if the SRT-10 is the fastest production truck, I gota get 13. 0 right? That would be one turbo and 6 bigger in jectors away tho...



daaaa well. .

 

[Vaughn MacKenzie]

I'm looking to get above 108mph on stock tires.

Not sure, but I think the 108mph limitation is a speed limiter, not engine governor. Maybe the DL addresses this too?

 

[Tomeygun]

Not sure, but I think the 108mph limitation is a speed limiter, not engine governor. Maybe the DL addresses this too?

So far I dont think so, Just a rev limiter MOD, no indications that it will remove the speed limiter

 

[JVolpe]

I seem to have hit a rev/some kind of limiter on the track now. Pulls like muscle car to the high end of 3rd, then just flattens out all the way through OD. On the dyno I maxed rpms at a little over 3500, on a stupid error at the track shifted the 4wd shifter to N accidently. Hit 3589 before I realized that I was not going to see any boost and let off. These max #s showed on the attitude records and surprised me that they were that high. I guess either the Juice/Attitude does raise the rpm limit, or the fact that there was no load on the engine allowed the higher rpms.

 

[Tomeygun]

I seem to have hit a rev/some kind of limiter on the track now. Pulls like muscle car to the high end of 3rd, then just flattens out all the way through OD. On the dyno I maxed rpms at a little over 3500, on a stupid error at the track shifted the 4wd shifter to N accidently. Hit 3589 before I realized that I was not going to see any boost and let off. These max #s showed on the attitude records and surprised me that they were that high. I guess either the Juice/Attitude does raise the rpm limit, or the fact that there was no load on the engine allowed the higher rpms.

Be sure not to confuse "over rev" with what we are try to do. I can pop the clutch in while flying and get the truck to over-rev to like 3500 rpms, But on the dyno, the power starts to fall from 3200 and on, till at like 3500 the factory fuel pulse is dead - as in zero



Anyway, what we are trying to do is have a full fueled 3800 rpm that you can see it on the DYNO... Mainly for drags, and sledpulling, to put the 3rd gen on an even field of the 12v'ers (or at least closer :-laf )

 

[JasonCzerak]

I seem to have hit a rev/some kind of limiter on the track now. Pulls like muscle car to the high end of 3rd, then just flattens out all the way through OD. On the dyno I maxed rpms at a little over 3500, on a stupid error at the track shifted the 4wd shifter to N accidently. Hit 3589 before I realized that I was not going to see any boost and let off. These max #s showed on the attitude records and surprised me that they were that high. I guess either the Juice/Attitude does raise the rpm limit, or the fact that there was no load on the engine allowed the higher rpms.

Someone with a 4. 10 gears could varify this. 4. 10 geared trucks with stock tires (3rd gen) should not hit 108, maybe 100 tops, assuming it's a revlimiter.



I'm at about 3200rpm (creaping up to it from 3100-ish) at 108. that's when my EGT think about hitting 1300 .



tho, I don't think it's possible to limit the RPM's like in gasser with a diesel. Example, you dump 100%, with a manual trans, into the cylinder assuming there is going to be a load, and you don't, just the momentium will carry the RPM's above 3200, when this happens at 1800rpm. while in a gasser, ever take a GM and just matt the throttle while parked? it should bouch off 4500-ish rpm



I have reved my motor to 4000-ish rpm before once. I was doing 75mph, thinking I was going to shift into a "magical 7th gear". didn't hit reverse, but 5th. clutch never fully enguaged thankfully.



These trucks need a 7th gear. really now.