What is a STOCK 370Z with MT actually putting down?

ZKindaGuy

I have seen RWHP postings ranging from 260 all the way up to 282 for STOCK 370Z's with MT's. It is hard for me to accept that there is this much RWHP latitude between 370Z''s with MT's. What is this car actually putting down in a pure "off-the-lot" STOCK configuration??

UNKNOWN_370

Man this thread can go on forever. This will definately start the "which dyno is the most accurate" thread. Some dynos run low, some run high. I would just take that median number and call that the closest truth. So if some are as low as 260 and as high as 282 hp. I would say 271 is the median true rwhp on the Z. Wat you really need is torque anyway. Without torque hp can only do so much. I wish nissan designed this car to be more like 332hp 300lbs torque. If its a beast now? Imagine with 30 lbs more torque. Lol. CRAZY!

klubbheads

If nissan designed this same engine to only rev 6000rpm or make its peak power at 6000 rpm then you would have that much tq. You can't have high revs and high tq at the same time. There is a constant number in a HP vs TQ formula which applies to every engine in the world. That number is based on physics that can not be changed.

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MightyBobo

Laws were meant to be broken.

Including the laws of physics.

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klubbheads

lets do it...

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DjSquall

We can fly can't we?

UNKNOWN_370

What you are saying sounds like an educated answer. And its believable the way you are explaining it. But I would like some proof of that statement. Do you have a link or something I can read from. I'm not saying you are wrong. I would just like to learn from this theory.

MightyBobo

Look at motorcycles - their redline is ridiculous because they are a "larger" bore with a shorter stroke. That allows them to rev high without too much fear of parts flying everywhere. Unfortunately, this results in a loss of torque. Now I don't know the SPECIFICS, but I don't doubt it has something to do with less mass/overall piston speed flying around.

On the other hand, most domestic V8's go with a mix of a good bore and a good stroke to get an ideal combination of power and torque. The downside being, you cant exactly spin it up to a crazy-high redline. Again, probably due to just the sheer mass of internal parts flying around at amazing speeds and the risk of valves floating into the piston heads. A common mod for many F-body guys who want a high-revving motor is to actually de-stroke it. Less cubes overall, but the higher redline can be worth it...

Most diesels in trucks are inline 6's with a medium size bore, but huge stroke. Low-*** redline, but man the torque is ricockulous.

By the way, worthy of note - once you're up to speed and in your ideal RPM range making peak power, your torque does not mean nearly as much as it does, say, off the line on a launch. So, put two theoretical cars with the same exact size/weight/aerodynamics with 2 drastically different motors that, somehow, magically make the same exact horsepower against each other. Lets say one has a low-revving, 330 HP/330 Torque V8. The other is a higher revving 330 HP/250 torque V6 (boy, I wonder what motors Im comparing here...). Assuming both are driving near each other on a course and its...say, like NASCAR where they are running at their peak power most of the time...they should theoretically be able to compete with each other just fine.

Now, of course, this all goes out the window as soon as corners, braking zones, and the need for a lot of shifting happens. But, of course, this is why no two cars are the same, right?





****, this isnt a typical MightyBobo post.................douchebags. There, I feel better.

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kannibul

This is a point that can not be overstated.

I mean...since HP is a calculation based on torque...so without torque, you have no HP, therefore it can only do so much (nothing...)

theDreamer

Unknown is correct, it is all dyno based because they all measure things differently, and after that you have variables of temperature, humidity, altitude, etc.

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elmz

+1 those are your variables, end of story.

AK370Z

I knew it! Unicorn blood!

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m4a1mustang

Depends on the dyno.

I think I dyno'd 259 stock on a Dyno Dynamics (which read low compared to something like a Dyno Jet).

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whoady4shoady

Dynos are like body fat calipers IMHO. They will only get you close to a true reading.

kenchan

4500 on a good day.