Seems that Ford is not the only one that played some games before the intro of the F-150 and Nissan with the Titan. Ford waited for Nissan to announce their max trailer weight and then came out with theirs at 400 lbs more. Now here's Nissans ploy. One of the guys at work bought a Titan last week and today we finally got him to put it on the dyno. Guess what- not 305 hp- try 358 HP. No wonder the Titan beats the Ford 5.4 3V and the Dodge Hemi in the power department. If I can remember, tomorrow I will post the torque figures as well. It was also higher than advertized by quite a bit.

 

There is no way in hell a Nissan Titan, or any other factory full size truck for that matter, is putting 358 horse power to the rear tires on a chassis dyno. I doubt it even makes that at the fly wheel.

 

If it's reading 358hp at the rear wheels, that'd mean it has to be making something like 430hp at the flywheel!

 

I saw a post similar to this on another forum. From what i remember the guy dynoed his titanic like 6 times and it was more like 256 hp at the rear wheels and he was estimating 358 hp at the crankshaft assuming an 26% powerloss through the drivetrain.

 

here is the link to the forum....

http://www.nissanforums.com/showthread.php?t=44614

 

Most of it looks believable, the Nissan has nearly identical performance numbers as the Dodge despite being lighter. I think the Nissan beat the Dodge in the quarter by 2/10ths of a second but both had identical trap speeds. They also had identical (to the tenth of a second) 30 - 50 & 50 - 70mph times (passing maneuvers). The shop indicated that both the Nissan and Dodge have recorded same power numbers (within 2 or 3 hp) but the Nissan has more peak torque.

But look at that Nissan peak torque. Notice how the peak torque on the dyno sheet is extremely peaky at the very beginning of the pull. I'd say the 300ft lb measurement may be in error. Looks like they stabbed the gas right near the sweet spot and made the dyno record high.

Still, pretty impressive.

 

Also worth noting is the fact that that particular Titan is 2wd. Parasitic loss should be less than 26% for a 2wd truck ,probably closer to 20%. If you use 20% and give a margin of error for the dyno, the Flywheel numbers are actually probably closer to 310HP, pretty close to the factory rating.

I also agree with rockclimber on the torque issue, looks like an error in the reading the way it peaks and falls so fast. I don't thein the 300 is a true reading.

I saw a 2003 Hemi Ram 2wd dyno at 269 HP 297 TQ a few months ago. Differnt dyno's give different numbers, so unless the trucks were run on the same dyno, it is real hard to compare numbers and say which really is stronger.

 

What kind of loss would you expect for a 4wd pickup. I don't know much about dynos but it makes me wonder what kind of rear-wheel numbers my F250 would get, just out of curiosity.

 

From what I've seen 26-28% is actually a close number for 4wd trucks and I suspect that's where that number originated from at the begining of this post. The 2 V10 4wd Super Duty's I've seen dyno'd made 210-225 HP at the tires.

 

I don't see how the parasitic loss could be siginicant unless you are putting the truck on a 2 axle dyno where it would measure power at both sets of weels. My F-150 put up 216hp/297tq on a Dynojet chassis dyno. Figure p-loss at about 25%. If Nissan underrated their truck big deal...

 

the new titan is about the same as a f-150, but i am still a ford man.

 

Weight is the main reason the F-150 is not as fast as the other two. Did any of you scroll down on the link and look at the dyno of the 5.4. 234 HP and 290 ft-lbs figure 26% drivetrain loss and you have 316 HP and 390 ft-lbs, this was according to 4-wheel & off road. If you could get the new 5.4 into a Heritage F-150, it would be as fast as either the Ram or Titan, but Ford chose to make the F-150 stronger than the rest and added a lot of weight in doing so.

 

good post ag4.0 i would much rather have a stronger truck, and quieter truck than one that wins all the drag races.

i think it is quite refined, and if it costs me 500 lbs, then so be it. it will pull or haul anything i throw at it though..


that is what a truck is for

 

Those numbers seem awful optimistic to me, especially considering the V10's I saw made less HP and about the same TQ. I'd bet those numbers were either recorded on a Dynojet (which are notoriously optimistic) or are flat BS. Without seeing another Hemi or Titan dyno'd on the same dyno, you can't say that the 5.4 is as strong or stronger. Like I said, different dyno's will give different numbers. I've seen the same vehicle get readings that were different by 30+ hp and 40+ TQ on different brands of dyno's without any changes to the vehicle at all.

Remember too that just because a truck is heavier doesn't necessariy mean it is built better.

 

I agree with EV2DEMON and Rockclimber cocerning the first recorded peak. It is not normal and indicates a downshift or something else caused it.

I would take the second peak at the true peaks.