I hear the reason that the Z has more hp than the 2k2 maxima even though they got the same engine is because the Z has a better intake port, better exhaust system and a higher lift cam. I have seen people modify their exhaust and this other guy just bought a Z intake manifold to put on his 2k2 maxima, but no one has ever tried to install the Z cam on their 2k2 maxima? I think that should be where the big difference lies for the 32hp difference of the two cars. What do you guys think? Anyone tried to install the Z cam on their 2k2 maxima?
Also another thing, 2k2 maxima is dynoed at around 200hp stock, but it is rated at 255. Any explanation for the huge power loss? How can we make the engine output more HP to the wheels? would a performance clutch system help, since it will change the drive ratio and the axle. after all, it is the axle that actually drives the car. Any ideas, input?

 

I haven't heard of anyone trying the Z cam, but give Ethan some more time and money and I'm sure he will do it. He's got the biggest 's of us all. Anyway about the dyno. Most stock dynos that I've seen of 2k2's is from 204 up to 211, which is impressive to me. Front wheel drive cars loose on average 20% of there HP to the wheels. So here is the mathematical way.

255 * .20=51
255-51=204
I know this isn't that accurate but it is a good estimate

 

If you go to injen.com, they have the dyno before and after installing their injen CAI. The after dyno showed the peak hp to be 207 or so. and before dyno was like 197hp........

 

Do a search for "Injen" on this web site and you will see that there are many comments on that dyno. They did a 3rd gear pull, and the six speeds are supposed to be done in 4th gear. That is the reason that there HP rating was so low. That is also why many people don't beleive the Injen is as good as they say it is. I have one and love it.

 

A performance clutch will not change the final drive ratio or axle. A lighter flywheel will let the engine rev faster and will have less of a parasitic loss (similar to a aluminum underdrive pulley, which has less mass than the steel pulley). Go put on a lighter set of wheels and you will gain a few hp's there too.

 

Not to nitpick, but I don't think you actually "gain" any HP by going to lighter wheels. What you get is less rotational inertia, which means it takes less HP to get the car to accelerate.

Its like saying that you gain some HP by taking the spare out and making the car lighter. The car is quicker because its lighter.

 

I agree, you just worded it correctly, Thanks

 

so anyone going to or plan to get the Z cams installed in their 2k2 maxima? That shouldn't be too expensive i dont think. Cams are like 200 dollars?
Is there anyway in the world, even a slight possiblity that we can modify our 2k2 maximas into a 10 sec. car?

 

A 3rd gear pull will actually yield higher #'s typically. This is because of the gear ratio and the tranny multiplys the power differently.



Cams are the same, however ECU may take better control of them. JWT is releasing cams soon so look there for a good cam swap.

Stock maxima's that I have seen have put down 199-208 FWHP. Every dyno is different and the location of the dyno does play a roll. My car put out only 207.8 FWHP with a Stillen intake and franken midpipe.
Reason our cars dyno so low is simple, nissan over rated our HP #'s. However, they gave us a lot of extra TQ

 

Cams are over a grand(theres 4). The install is a PITA too..

 

You better believe it ! Just lift that motor out, put it in your living room, and go to work on it...

 

There has been some speculation that Nissan actually under rated the Z's HP numbers. People say it's actually around 300 hp, hence the dyno'd 240(give or take) rhp. That would calculate to Nissan's 20% loss. Also people mention Japan's gentleman's agreement with a limit on HP.

 

Is the dyno for the Z out yet? Where did you find that information? So, did Nissan say their cars loose about 20% hp, or is that just common understanding between car owners....

 

Sport Compact Car has dyno'ed a Z at 244, and 249 HP (with 91 and 100 octane respectively). They had a 5.8s 0-60MPH and a 14.00s 1/4 mile with a 99.2 trap. All done by the way on 91 octane gas.

 

Well keep in mind SCC also dynoed the 6spd max and got 218 FWHP. So SCC is either full of it or nissan gave them a ringer. I highly suspect the same holds true for this 350 Z they tested. My quess is a 350Z will put down about 230 RWHP tops.

 

Well... SCC also gave the Maxima a 15 hp curve. We shouldn't take literally what they print. Lets wait and see what the real cars dyno.

The gentlemans agreement stuff is probably long gone. Don't forget about the 340hp Q45.

 

The forum at http://www.my350z.com is where they're talking about 300 hp for the Z. Everyone's still waiting for someone to actually dyno it.

OT: In Japan, doesn't it cost more to own a car with a bigger engine?

 

I'll bet it's above 240.

Now you've got my printed estimate, no take backs.

 

I just drove my boss's 350Z (Silver/black w/ manumatic tranny) that he picked up Saturday (pretty cool boss, huh?). Has 167 miles on the ticker. It sure as hell felt above 240.

Throttle response (with the 'by-wire') felt better than my 2k2. Most importantly, it felt like a Z. Those of you who have owned Z's in the past will know what I'm talking about. I'd go into it more, but it is a Maxima board. I didn't go above 4000 rpm with it, so I'll ask to drive it for a spin again when he's got it broken in.

I like it. Lots.

 

If the cams are the same in the Z as in the Maxima, then why does it produce its peak power at 6200 rpm versus 5800 for the max? Supposedly it still benefits from aftermarket bolt-ons, so I think there must be at least something different going on inside the engine.

 

ethan's maxima holds power all the way to redline

 

Wrong. Here's a link to AEM's dyno of the 350Z:

http://www.aempower.com/pdf/results/...iss%20350Z.pdf

As you will see the baseline for the Z is around 225 RWHP.
I also read another article online a while back where Stillen dynoed the 350Z at one of their open house events. Their Z dynoed at 228 RWHP. Here's the link http://www.altimas.net/featured/stillen/dwarticle1.html

 

I've been surfing the my350z boards, and most of the guys there are dynoing around 230-247 ish numbers while the 2k2 guys get around 200-210 ish. Did emax say that the new intake manifold from the 2k4 max could make up this power in between of 20-30 hp?

 

Yes, Z is overrated. My friend dynoed his Z 6-speed and got like 225-230hp and torque around 224.
Max 6-speed puts down the same torque numbers.

 

I've been told several times in the last 4 months... Thanks for showing me again though. (D'Oh)

 

I totally agree with you. I think Nissan "one again" over rated the HP on one of their cars. I would love to see some dynos of the supposedly 240 RWHP baseline claims for 350z owners.

 

here is one:
http://www.my350z.com/forum/showthre...threadid=16015
244.4HP/235.9 TQ

and another:
http://www.my350z.com/forum/showthre...threadid=15492
229.8 rwhp & 231.0 rwtq
and a few that posted in that thread got 240's on their hp

 

Thanks for posting the links. I can believe the results of the second dyno however I believe the first one wasn't SAE corrected. If you read a little deeper in the thread a more accurate number would be
232.18 SAE Corrected HP and 235.9 * .95 = 224.1 SAE Corrected Torque.

 

so lets say nissan actually put out a 2k2 max with the posted hp,tq numbers that are accurate. how will that compare to my 2k2 that has the less hp, more tq engine? how will they compare from a stoplight race, and on the highway? because if their is no noticeable differene, then why are we making such a big deal about the hp loss if the tq makes up for it? but im sure im wrong because a big deal has been made about it.

 

Yea, your right about how the first one was around the mid 220 hp range. I believe that most of the 350z guys are getting MORE hp as they break in their engines more. It would be interesting to see how much they put out at the 10k range

 

We just bought an 03 Maxima and 350z on the same day, maybe the "by wire" is better in the 03's. The response in the 350 is no better than the one in our Max, very smiliar feeling to both me and my wife. iknow the z feeling I owned an 87 and 93 300Z before I totalled it and got a 93 maxima.

 

This has just reassured me further that Nissan is over rating the HP figures on their cars, or at the very least the 02-03 Maxima and 350Z. Someone on this thread said that the FWD cars lose more HP at the crank than the RWD cars. I don't necessarily believe this statement however I'm not going against it 100%. If you do the math correctly, both the Z and the MAX are losing roughly 24% HP at the wheels. If you figure the 'average' stock 02-03 MAX dyno is roughly 205 FWHP. Therefore 255 HP/205 Dyno FWHP = 24.4% HP loss. The 'average' stock 350Z dyno is roughly 232 RWHP. Therefore 287 HP/232 Dyno RWHP = 23.7% HP loss. The #'s are very close and almost the same. If my theory holds true about Nissan over rating the HP in the Maxima, then same is true for the Z...... At any rate I too would love to see 350Z stock dynos at 10K miles!

 

Z people are getting more because they are now dynoing in the correct gear. 5th gear is the right gear for them. Seems they are getting in the mid 230 WHP range now.

 

Aren't the 2k2 guys dynoing in the correct gear also? I believe that's the 4th gear? If not, do you think you'll put down more hp if you did the pull in 5th?

I'm with you in the belief that the vq35 in the maxima has the definite potential to put out as much as the vq in the 350z

 

I was just talking about Z guys here. The correct gear for the Z to dyno in is 5th. The corect gear for a maxima to dyno in is 4th.

 

It could be underrated HP, but it could also just be bad loss through the 6spds. Nissan isn't all that great with transmissions, and their luck with 6spds on some other cars wasnt all that great either. i.e. S15 Silvia. The autos seem to show the normal 25% loss, through drivetrain, but the 6spds seem to show more loss than there should be. If the 5spd Altima puts out same numbers as 6spd Maxima, it can still be blamed on the transmission loss, because its still within error margin. The only real proof of underrated power is through the automatic Altima and Maxima, same transmission, should put out different power outputs, with 25% losses, it should be 180ish for Altima and 190ish for the Maxima. I'm not familar with stock auto Altima numbers so i guess u figure that out, and i find the truth.

 

Another thought. What if Nissan underrated the Altima, instead of overrating the Maxima. The numbers all fit then. Inefficient transmissions, 5spd AND 6spds, explains, similar dyno between auto Altima and Maxima, and low numbers than should be for all manual transmissions. Also avoids any type of lawsuit against overrating the power.

 

Auto max and altys dyno the same. And 20% drive train loss for a auto is the norm.