Finally The Truth: What Is The GT-R's REAL Horsepower?

Finally The Truth: What Is The GT-R's REAL Horsepower?
Yes, we have already dynoed Nissan's GT-R and we made some very controversial claims as to the true power output of said GT-R.

The unknown in that test was the elusive "driveline losses." That's the amount of power lost to inertia of spinning parts like gears and driveshafts and friction in the transmission, U-joints, axles, etc., which have traditionally had to be estimated.


We used the conservative estimate of 15% that's usually used for simple manuals, but this one uses twin hydraulically actuated clutches, includes all-wheel drive, with two separate prop shafts, so we considered our estimate conservative. Our Dynojet inertia-type machine indicated a mean output of 430.6 hp at 6700 rpm and 425.3 lb-ft at 3900 rpm, which we interpreted as 507 hp and 500 lb-ft after accounting for the 15% loss.

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IngenieurIngenieur - 1/2/2009 3:43:00 PM
+7 Boost
Here's another one you won't like.

Fast forward to the 4 minute mark.

http://www.youtube.com/watch?v=mo3PaTPFiiI

FYI, the GTR tested was a privately owned one (not supplied by Nissan). And, the Autoexpress GTR was most likely privately owned as well as the GTR is not yet available in the UK.

Cheers mate!


_43LE_43LE - 1/2/2009 4:23:13 PM
+2 Boost
Poor Mr. KK Turbospyder, the more he comments, the less credible he looks. What more could we expect? Why so much hate?


Agent63Agent63 - 1/2/2009 6:40:42 PM
+3 Boost
My friend from Arizona dynoed his GT-R with 503 horsepower. It's not a bad thing. You get more than you expected and isn't that a good thing for the customers? If the 997 TT got 508 horsepower it would be quicker too but like I've said before, the 997TT is an awesome car to drive and the GT-R is also another beast that also deserves respect.

Whatever the horsepower numbers are both have their pros and cons. I want to see Porsche's PDK in the 997TT considering the Carrera S fitted with one gets to 60mph in 4.1-4.2 seconds, pretty impressive. It's all about the TRANNY!.


S4cabriofoxoneS4cabriofoxone - 1/3/2009 10:52:18 AM
+2 Boost
"I want to see Porsche's PDK in the 997TT considering the Carrera S fitted with one gets to 60mph in 4.1-4.2 seconds, pretty impressive."

If I'm not mistaken when the refreshed Turbo comes out it will be available with PDK.


Agent63Agent63 - 1/4/2009 12:49:26 AM
0 Boost
I wonder if it can shave off .2 of a second. More the better obviously. I want to be surprised. :) The PDK seems like a good system and good choice to use. No more "Oh you drive an Automatic Porsche" classification. No ones going to say "Oh you're driving an Automatic GT-R?".


PorschinatorPorschinator - 1/2/2009 7:25:38 PM
+4 Boost
Didnt know you were female by the handle you use...bummer on cancer if true and thanks for the laughs you two =)


synxsynx - 1/2/2009 4:12:29 PM
0 Boost
On an episode of Top Gear JC said that each engine is handmade so the horsepower of each is different


synxsynx - 1/2/2009 5:52:48 PM
+2 Boost
Hey, thats what he said.


synxsynx - 1/2/2009 5:57:22 PM
+2 Boost
look at brembo's second comment :
http://www.autospies.com/news/Nissan-Purposely-Inflates-GT-R-HP-On-Press-Test-Cars-Or-Did-They-33814/


EL34EL34 - 1/2/2009 4:29:13 PM
-8 Boost
Oh what a tangled web Nissan & Ghosn weaved, When first they practised to deceive!

:-(


_43LE_43LE - 1/3/2009 2:55:57 AM
-3 Boost
"Oh what a tangled web Nissan & Ghosn weaved, When first they practised to deceive!"

Well at least under reporting is better than whining about not being able to drive a great car very well...


S4cabriofoxoneS4cabriofoxone - 1/3/2009 10:54:35 AM
+3 Boost
Tell me more about your life story.


PorschinatorPorschinator - 1/2/2009 7:32:08 PM
+1 Boost
GT-R is great with proper gearing and sick tranny/drivetrain you can get good #'s even being nearly 2 tons of fun. Launch Control has been known to cause damage if abused and Dealer can tell by the ECU readings which will result in warranty issues :-P *only down side.

Of course no engine is exactly the same with identical output but with proper build quality the difference should be no more that +/- 2%.


TauronB2GTauronB2G - 1/2/2009 8:51:32 PM
+5 Boost
So its true Nissan has been lying about its power figures by under reporting the torque. We know it now. Either way its still a monster. As big of a Porsche fan as I am I have to give credit where its due.
T


abcdabcd - 1/3/2009 3:31:26 PM
0 Boost
"Maybe the ingenieur can explain this discrepancy."

That's probably GT-R engineers secret how they can do so heavy 485 hp car faster than lighter and more powerful competitors. They must have very big knowledge in physics and mathematics, don't you think so?
---
There is more cars with significant difference in acceleration times done by European and American magazines. Lexus LS600h for example, in Europe above 6.5 sec, in America 5.5 sec. Maybe there's a difference how the tests are made but I don't know what.


abcdabcd - 1/3/2009 5:37:39 PM
+1 Boost
"It's like some GT-Rs have more power than others..."

Or this Lamborghinis LP560-4 have less power or it was broken or ... or ... . If Motor Trend will do 1/4 mile in this GT-R we will know something more. But I doubt your conspirancy theories will outlast when there's more and more proofs you're wrong.


Agent63Agent63 - 1/4/2009 1:09:49 AM
0 Boost
Ladies,

Put the figures to rest. You're arguing about cars that children have on their walls as posters. LP560-4 is exotic, the GT-R isn't. BUT, both accelerate amazingly fast. Do you think the owners of both cars would be arguing over .2 or .5 seconds difference? They would be cruising, speeding, having coffee laughing at what most fanboys would be talking about. They could careless because they know they drive one of the most desired cars in production. That's what cars should be about. Good conversation pieces, good engineering, good to drive, good to look at, good on a track, what else could a car enthusiast want?


IngenieurIngenieur - 1/4/2009 3:49:09 PM
0 Boost
Midengine...I mean TurboSpyder,

The AutoExpress article you keep posting says the GTR did the 0-60mph in 3.9 secs. This is inline with most 0-60 times set by other publications (ie, below 4 secs). The LP560-4 in the same AutoExpress article did 0-60 in 4.4 secs. Seems like the Lambo has the greater inconsistency.

Did you even see those stats in the article you keep posting?


BJS470BJS470 - 1/4/2009 1:58:21 AM
-2 Boost
bimmerdyke is just bitter cuz the gt-r is better than a bmw


IngenieurIngenieur - 1/4/2009 3:55:53 PM
-1 Boost
sigh...


IngenieurIngenieur - 1/5/2009 9:31:42 AM
+1 Boost
I guess you missed my reply above. Just like you missed the stats on the AutoExpress article.




IngenieurIngenieur - 1/5/2009 9:32:12 AM
+1 Boost
I guess you missed my reply above. Just like you missed the stats on the AutoExpress article


IngenieurIngenieur - 1/5/2009 11:49:45 AM
+1 Boost
Turbospyder,

I am not doubting what the Lambo is capable of in a straight line (especially with its superior power to weight ratio). In fact, the Lambo will probably outrun the GTR more often than not in a straight line. But add twists and turns and undulating surfaces, it might be a different story. (You can refer to the Autocar video I provided earlier).

But the issue here is your theory that somehow Autoexpress was provided by Nissan with a non-standard GTR (and like I said it's most likely privately owned as the GTR is not yet available in the UK) and that the GTR couldn't have out accelerated the Lambo because of its power and weight disadvantage. As it turns out, the Lambo got a higher than average 0-60mph time (for whatever reason).




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