I need more RPM's

[NDietel]

Dose anybody make an aftermarket electronic box or download for the common rail that is capable of changing the RPM limit to 4500? I just put in a bigger cam in my 2004. 5 Ram 3500 and it's good for 4500 RPM. However my trucks computer only lets me see 3500 RPM. I sure would like to feel the full potential of this cam. So far, even limited to 3500 RPM, its a rocket ride... ...

 

[WUnderwood]

the Smarty makes a few more RPMs. talk to JWilliams about more RPMs, he says we need the same thing

 

[NDietel]

I have the Smarty and TST together but still need to get to 4500 RPM.

 

[RobertP]

the Smarty makes a few more RPMs. talk to JWilliams about more RPMs, he says we need the same thing

rpm's are easy but putting power up there is a problem, ive cranked 4 k a few times and theres some but not a lot of power up there.

 

[DerekW]

There are several reasons to that I wanted to run 5 grand a while back. I still do want to run 5 grand, but I never found a good source. Somebody PM'd me and I PM'd back and never heard from again. So currently I am stuck with 3700RPMs. There is more than power benifits at RPM's at 4 grand you just need to unlock high rpm ability to achieve the results. I wanted to run 5 grand the electronic way (more costly but so many benifits if racing) and theres the mechanical way converting to a P-pump from a 12 valve. Personally few dare to look beyond that fact that diesels are not originally designed to run high rpms like a gas burner. But if you can see beyond that and have the time (for build up, R&D, and downtime) and the money, go for unlocking high rpms. You will find diesels to be a whole new animal provided you have the right combination between the engine and drivetrain. I refuse to explain all the reasons I want to run high rpms but I did alot of math, years of following the gasoline racing engines, experience around alot of dyno's in race shops all around the town I used to live in, alot of common sense to make crazy ideas work, a little reading about the few high rpm diesels, and I have found that higher rpms are the way to go. greg hogue has an article he wrote about diesels and drag racing that some of you may want to find and read, you might start digging deeper and find more and more. Then figure out how some of the formula 1 gasoline powered cars work. just keep researching as much as you can learn about gasoline and diesels in the racing world. you have to realise that diesels and gaoline burners both operate off the 4 stroke theory of operation. The general make up is close to the same but they do have there own distinct differences of which you need to figure out the advantages between the two from there. gasoline engines have been the focus of the racing and automotive worlds. recently diesels are coming back alive, but they simply put dont have near the developement the gasoline burners have. further more I do not believe that diesels will have the developement opportunity gasoline engines had. I feel this mainly because gasoline engines were developed more by street racers (I mean street class race vehicles) going pro (how the long time big names in aftermarket started) without the EPA breathing down there necks during the time of early developement towards racing. This was mostly like due to the fact that the EPA had no concern over air emissions at those times of gasoline developement, then when they became concerned they took forever to get to the latest clean air crap our vehicles are equipped with today. You really need to take a step back and realize that gasoline engines have come along way. diesels in america have been taking baby steps since the fuel costed so much during fuel crisis, turbos were either non-existant or jsut plain sucked so they lacked power and were of no interest, then way before that Dr. Rudolph Diesel couldn't make the diesel engine run because he couldn't get the fuel injected. Gasoline engines most likely were capable of the RPMs they are now back in the day. It took alot of time, money, and determination of manufacturers and race teams to finally get them where they are. It didn't happen over night. Diesels are still frowned upon too much to get the attention (time and money) they need to run higher rpms, but believe me the potential is there just waiting for that prince charming.



I am sorry i suck at typing and expressing myself. I didn't do well in english back in the day in school, but if you can distingluish what I saying and read between the lines, then research and such, you may find that diesels have the potential we just need to unlock it.

 

[DerekW]

rpm's are easy but putting power up there is a problem, ive cranked 4 k a few times and theres some but not a lot of power up there.

Theres not much fueling up there since the computer is trying to keep rpms in check. if the computer allowed maximum fueling all the way to the rev limiter and beyond the computer would not have any control over the rpms. However if the computer starts to defuel at a certain rpm and progressively defuels even more than the computer can restrain the rpms. If the computer control the rpms instantaneous after it reached peak rpm it would be slinging parts left and right. Control the rpms progressively and you not as hard on parts so the hold up alot longer with less mass. Thats why there no power up there. plus at higher RPMs in most cases theres not supposed to be power. instead of having the power at the back of the crank you mulitplying your power through reduction gears to achieve the power you need.

 

[zstroken]

Good post Derek, wandering if the $$$ to HP is there for the high RPM especially with an automatic. Most of the High RPM gassers are short stroke motors. The long stroke of the cummins makes for very high cylinder speed, and the huge behmoth bottom ends don't like the big rpm. I am not saying the 3rd gen boys don't need more rpm, just i don't know if 5K is necesitated. For a race only setup maybe, but having a charger that makes for the cfm requirements at 5k, is a little different than one say at 3500. I don't expect you to reveal all of your trade secrets, but come on throw us a bone. Give a little more insight to this.

 

[Bean]

Some things in the worxs, should know more by April.