raced a duramax 2500 today - Page 2

PSNissanFleetMgr · 07-03-2009, 08:30 AM

I don't think the D-Max knew you were racing, sorry OP.

NBhunter80 · 07-03-2009, 09:15 AM

A tuner on a diesel will usually make more smoke. As was pointed out before, black smoke is from unburnt fuel. If you add more air then more fuel will burn resulting in less smoke. So with a larger turbo or modifying the geometry of the turbo to make more boost (VGT) you go alot faster and less smoke. Then you can add huge injectors and get your smoke back because you are putting even more fuel and the turbo can't keep up. Those are the guys who you see at the track billowing black clouds of death and running 11 second 1/4 miles. After you tune a diesel, essentially you do not have any restriction on how much fuel you can use, basically you can just trample it and dump as much fuel as your turbo can provide air to burn...or until the motor blows up. That is why the tuner makes such a HUGE difference in power on a diesel...and that is why a duramax or powerstroke with a stock Variable Geometry Turbo, stock injectors, and a tuner can go so fast. The tuner allows you to dump tonnes of fuel, and the VGT already provides alot of air to burn it...hence the 150hp 350ft*lbs tq increases from the tuner only. And a cummins with a vgt, injectors, exhaust and a programmer is just rediculous. Diesels can make HUGE power with very little modifications due to the compression ignition technology and lack of need to regulate the AFR. I love my titan and all, but I have no doubt that my old modded '03 powerstroke diesel 6.0 could have raped any equally modded T in a race like it was standing still. Keeping the heads from blasting off from the power was a whole different issue though lol. 1000 ft*lbs of torque is not easy on the drivetrain lol. But yeah, IMO diesel motors are a superior design in every way.

neworleanstitan · 07-03-2009, 09:40 AM

speaking of a clean tune here is my buddies 2500HD 550 hp to the wheels

http://www.youtube.com/watch?v=nxPYaCwhQ2k

NBhunter80 · 07-03-2009, 10:26 AM

Yeah, you can see how fast the VGT spools up because there is a puff of black smoke when the rpm is low just for a second at the start and when it shifts, and then the turbo catches up really fast and no smoke while it is giving boost. The turbo gives enough air that there is no unburnt fuel. Does he have an aftermarket turbo on that bad boy with stock injectors? Also, it is a newer diesel they have a Diesel Particulate Filter and EGR that take away most of the smoke (and alot of the power). I bet your buddy would blast the smoke if he got rid of the EGR, DPF, and put monster injectors. Plus he would probably be making over 700hp at the wheels by then. My truck had no EGR or DPF and billowed black sunshine all day long when you raunched on it. I especially loved when you race a convertible and they get covered in diesel soot lol. Damn I miss that

This is what I'm talking about lol

YouTube - Trubo Diesel truck 720hp Smokes Out mustang 11sec.

NBhunter80 · 07-03-2009, 10:39 AM

YouTube - Diesel Burnout Compilation

Number two is just rediculous lol.

neworleanstitan · 07-03-2009, 10:52 AM

Just a custom tune, exhaust, no dpf and built tranny he killed the first allison.

neworleanstitan · 07-03-2009, 10:57 AM

I'm not sure what's cooler on #2 the black or white smoke lol

zsennett · 07-03-2009, 11:08 AM

Quote:

Originally Posted by PSNissanFleetMgr

I don't think the D-Max knew you were racing, sorry OP.

that's what you get for thinking... he was trying to race me not the other way around. but not doing a very good job at it, no dout in my mind or my friends mind who was sitting shotgun.

NBhunter80 · 07-03-2009, 11:33 AM

Quote:

Just a custom tune, exhaust, no dpf and built tranny he killed the first allison.

Ahhh..nice. Even the stock VGT does a great job on the duramax in keeping up with stock injectors. But yeah, I also roasted a tranny on my powerstroke a couple months after I first tuned it with SCT...by doing stupid stuff. It was still under warranty so I just had them throw a new torqshift tranny in and that was still going strong when I sold the truck at 101k miles and got the Titan. Can't say the same for the cylinder heads, driveshaft, radiator and some other powertrain stuff lol.

PSNissanFleetMgr · 07-04-2009, 10:56 PM

Quote:

Originally Posted by zsennett

that's what you get for thinking... he was trying to race me not the other way around. but not doing a very good job at it, no dout in my mind or my friends mind who was sitting shotgun.

OK then what I should have said is that I don't think the clown knew how to drive. Better?

With an experienced driver, a stock Duramax will walk on a mildly modded T like yours (or many others on this site) quite easily. So, it sucks for him that his driving skills suck ***.

Nothing against you or the Titan BTW, I love mine and would never give it up for ANYTHING.

MSrockyblue · 07-04-2009, 11:13 PM

Quote:

Originally Posted by PSNissanFleetMgr

OK then what I should have said is that I don't think the clown knew how to drive. Better?

With an experienced driver, a stock Duramax will walk on a mildly modded T like yours (or many others on this site) quite easily. So, it sucks for him that his driving skills suck ***.

Nothing against you or the Titan BTW, I love mine and would never give it up for ANYTHING.

You're doing more drugs than you should. A stock duramax is slow. My boss had one for his work truck. I've driven it plenty. Lots of pulling power but slow. Maybe you got a lemon for a titan. Oh, and the only difference in the driver skills is if it's manual or the allison. The automatics don't spin, so just stomp it, right?

SMOKEDYA2 · 07-04-2009, 11:24 PM

here is a duramax a the strip with absolutly NO smoke what so ever

YouTube - Banks Sidewinder S-10: first diesel drag truck in 7's

vilim12 · 07-04-2009, 11:29 PM

Quote:

Originally Posted by MSrockyblue

You're doing more drugs than you should. A stock duramax is slow. My boss had one for his work truck. I've driven it plenty. Lots of pulling power but slow. Maybe you got a lemon for a titan. Oh, and the only difference in the driver skills is if it's manual or the allison. The automatics don't spin, so just stomp it, right?

Gonna have to agree, a stock durmax is slow and any stock titan should be able to take one.

O-FiveCC · 07-05-2009, 07:48 AM

Here are the 16 second timeslips form stock D-max's
Stock 2007 Chevrolet CK2500 Truck 1/4 mile Drag Racing timeslip specs 0-60 - DragTimes.com

2002 Chevrolet CK2500 Truck LS HD 1/4 mile trap speeds 0-60 - DragTimes.com

Here they are running low 15's with intake, exhaust, and tune LOL

2004 Chevrolet CK2500 Truck HD CREW CAB 4 X4 1/4 mile trap speeds 0-60 - DragTimes.com

2006 Chevrolet CK2500 Truck HD 1/4 mile Drag Racing timeslip specs 0-60 - DragTimes.com

From Dragtimes it appears with intake, exhaust, and tuner has them mid 14's to low 15's. To get down in the 13's it appears that the intake, exhaust, custom tune are used with a transmission upgrade and a torque convertor upgrade (sometimes more boost on the turbo).
2005 Chevrolet CK2500 Truck CC SB 1/4 mile Drag Racing timeslip specs 0-60 - DragTimes.com

So no a stock 2500 isn't beating a Titan IMO, even with a tuner and an intake or exhaust, it's still game for a lightly modded Titan, I ran 14.5 with intake, exhaust, tune, and Tru-trac...Like i've been saying from the begining

Stump1000 · 07-05-2009, 09:14 AM

I read online that the 2011 Titan was going to have a small Turbo Diesel option. I don't know if it's just a rumor or not though.