Sure, the old 12V with a P7100 would be easier and cheaper. Just depends upon what you want to do with this project.
If you just want to hodrod an engine and go racing, get the 12V.
If you want to BUILD an engine and raise some eyebrows, 24V with a P7100.

 

the Car that the CTD is going into will defiantly raise eyebrows
I want a super fast built engine and if there is that much more benefit from the 24v VS 12v head then I would build a 24v with a p-pump conversion
does any member on DTR have a 24v with a p-pump???

 

53 ******:

Mark, thanks for your P.M.! Sorry it took me awhile to get in here to respond to you.

The members are giving me too much credit here. I agree with what most everyone has said, that being, if you are looking to make big power then the Cummins 5.9 12 valve engine is the way to go! FWIW, almost all of the Dodge Cummins Pickups competing in DHRA Sled Pulling in the top classes
are running the Cummins 12 valve platform. Additionally, in the DHRA/NHDRA most of all the top Dodges are also running the Cummins 12 valve engines with the P-7100 based pumps. This includes; Garmon, Stuckey, Smith, Morrison, Fletcher to name a few. Also the Scheid Rear Engine Rail Dragster also runs a Cummins 12 valve engine and that rail went 7.55 @ 183 MPH last year. The "Keating Machine" Tubular Chassis Drag Truck is in the 8's in the 1/4mile and that truck has a Cummins 12 valve engine also. IMO, several of the Pro-Street DHRA Production based Drag Trucks like I mentioned above will be in the mid to high 9 second range this year. Last year, I know two of them hit the high 9's. No doubt about it the Cummins 12 valve engines are darn good engines if you want to make big power and these guys I listed are proof of that.

DTR Member "dieselfuelonly" mentioned my 96' Dodge CTD to you. I am a "bottom feeder" compared to those trucks I listed above, but for a "daily driver" I am very happy the way my 96' runs. But I have to give credit where credit is due. Without the help from Scheid Diesel, I would not be where I am at. You can look at my signature to see what it took to get where I am at.
DTR Member "dieselfuelonly" mentioned my Scheid Water Injection System and I wanted to add that I am not running any methanol in the water! I run straight distilled water with a rust inhibitor to keep the water pump lubricated and to prevent rust inside the cylinder head etc.

Mark, I would recommend you deciding exactly what you want to do with the truck or car you are building first, what your goals for E.T./MPH are and if you intend to daily drive the vehicle or want to trailer it to the drag strips. At that point it will be easier for me to tell you where I would go as far as engine set-up concerning: cylinder/head set-up, piston choice, P-pump settings/calibration, type and number of turbos needed, injectors, transmission options etc. You have alot of options with the Cummins 12 valve platform as they have been around a long time now, IMO the parts are cheaper than for a 24 valve or CR setup and they are simple to work on and maintain.

I hope this has helped you some. I am not being evasive to your questions, it is just that there are so many options and things to consider when buliding one of these engines. I will be glad to help you anyway I can.

--------
John_P

 

I was wondering why that water had that "white-ish" tint to it... Was that the lubricant?

Heres a question for you: If you run water w/o meth, is there any possibility of damaging things, or is it only positive things that it can do?

Thanks,
DFO

 

Wow! John Thanks for taking the time to make such a big post
I am a while away from executing this project..this is all just preplanning.

I would like to make this 5,000lb car do 8-10 sec runs?? It wont be daily driven but it would be nice if I could still take it out on a cruise every now and then if that's not possible then my 06 CTD can tow this project.
the ultimate goal here is to go really FASTin something different.
what do you think??
I am still learning so be easy on me
so it sounds like the 94-98 engines are the best donor years??
what about the trans??

 

-------------
Dennis:

Yes, the white tint in the water is the lubricant I mentioned above. You can find it at NAPA and it is made by different companies, the NAPA brand being called "Number 13."

On your question about just water "damaging things" I would say no, not as long as you don't spray too much water. The water greatly reduces the EGT's of a high performance diesel engine by "cooling" the air/fuel mixture.
I don't use the methanol in my 12 valve engine because I had a problem with "detonation", that being, a noise much like a "spark ping" you hear in a gas engine. This occurs in the Cummins 12 valve engine more so than on a 24 valve or CR truck, because the timing on the 12 valve engines is mechanical or "static", meaning that if the timing is at 16 degrees it is 16 degree at idle and 16 degrees at WOT! On the CR or 24 valve Cummins Trucks, they have "variable timing" based on engine electronics. In my truck, the "detonation" with methanol is happening because of the high timing and the fact that methanol will "cook off" before diesel fuel because of it's lower flash point.

Hope that makes some sense to you. I have to have the water to keep my engine cool. Without it I would easily have EGT's above 1800 degrees!
One "formula" passed around in the diesel world that I always liked is this:

Air+Fuel=POWER, but a "spin-off" of that formula is HEAT!! And the more air and fuel you have the more heat you will have. My truck is living proof of that!

--------
John_P

 

--------------------
Mark:

You are welcome!

Yes, the 96'-98' engines are the probably the best years. Your transmission options are the Dodge 47RE (96'-02), Dodge 48RE (03'-Present) and of course the racing types like a Lenco. Cost wise, the 47RE and 48RE would be a better choice, but properly built with a good aftermarket TC, valve body, upgraded clutch packs and billet input, output and intermediate shafts you are looking at $6,000.00 or more! FWIW, in my 96' I am running an ATS Stage VI with all of what I listed above inside that tranny including their "Five Star" (or five disc) ATS Torque Converter. There are other aftermarket companies that produce good transmissions also such as Suncoast, Goerend, DTT, to name a few. That is personal choice and I would recommend you speak with the racers to see what they like and are running.

-------
John_P

 

So what mods do you recommend I run to get those kinda 1/4mile times??
I know I would defiantly need a burly trans and I want automatic.(DTT)

 

There used to be a thread around that listed member's top quarter mile times and their mods. I don't know if it's still around but I'll look.

 

2nd gen 12 valve

 

Here it is, this should help you a little.

https://www.dieseltruckresource.com/...ad.php?t=69098

 

Cool Thanks

 

this may be a dumb question but what is a GSK???

 

I also found this...
https://www.dieseltruckresource.com/...orsepower+list

 

So what car is it??!? Spill it!
Please not a AMC