NX2000 Dyno Test

[Jeremy Billiel]

Jeremy I know of a GSR ITS motor making more horsepower than what you state..... it's sitting safe and warm with no car around it though...
[/b]

How much will it cost me to remove it from the dark safe place?

[kbrewMR2]

with final drive gearing being open, it would seem making torque at higher RPMs (aka horsepower) would be king...?

[lateapex911]

If this were only about top speed...But it's about pulling out of corners...it's about getting deep into corners, it's about carrying speed through corners, it's about trans ratios, and on and on. Thats why certain cars are strong at certain tracks but junk at others.

[DavidM]

Greg's numbers are ~5hp and ~13lb-ft (at the wheel, of course) higher than what a real damn good Integra would do on a DynaPack. Combine that with the Integra being 80lbs heavier, and it makes you really have to drive the wheels off of it in the corners and utilize that better suspension. Certain tracks with show the strengths of each.

What's a real good whp number from a CRX on a DynaPack? ~128whp sound about right?

CRX = 17.72lbs/whp - fantastic, insane handleing
Integra = 17.42lbs/whp - pretty damn good handleing
NX = 16.33lbs/whp. - "another damn corner?!" handleing

The handleing helps even them out a bit. I can't speak for the 240's or the Miata's though since I don't know anything about them.
[/b]

I think you could swap HP and TQ and you'd have a good 240SX motor. TQ in the 150-155 range and 140-145 HP are pretty good for a 240. The 240 is RWD and maybe has a little better suspension. I'd still like to get rid of those 2 45 lb weights bolted to my passenger floorboard, though.

David

[16v]

ya? well I have 209 wtq from a 1.8 so there! :P

nice numbers Greg

[zracre]

From the data the guy gave me on my USB key:

154.3 hp @ 6200 RPM
143.4 tq @ 4800 RPM

...but someone told me they saw a run at 156.3...

Start the grumbling.
[/b]

nice numbers...now I see why the egg just drove away down the back stretch!

[Conover]

Sweet.

I found a dynapack in NC. Going down to Thomasville to try it out in a few weeks.

The Dynojet I've used in the past proved unreliable, differences of 10hp between runs, operator wasn't much help either. Hopefully the guys at speedwerks will show me the light!

[lateapex911]

Sweet.

I found a dynapack in NC. Going down to Thomasville to try it out in a few weeks.

The Dynojet I've used in the past proved unreliable, differences of 10hp between runs, operator wasn't much help either. Hopefully the guys at speedwerks will show me the light!
[/b]

Thats why these numbers should be taken with a grain of salt too.

(10 hp from run to run is prety useless!)

[JeffYoung]

And I had one tell me my (running) motor was at 18:1 air fuel. Yeah right.

Two observations on this thread:

1. Some motors just take to IT gains unlike others. Mine is one. The 325 is another. The SR whatever looks like it is too.

2. At those numbers, it doesn't seem all that different from the 240sx, and somewhat ahead (particulary in torque) of the Integra. Hard to quantify the subjective factors, but do they make up the hp deficit for the Integra and the 240?

[Joe Harlan]

Thats why these numbers should be taken with a grain of salt too.

(10 hp from run to run is prety useless!)
[/b]

One thing to check wheen going to a roller type chassis dyno is the tread surface on the dyno roller. We have seen that when inconsistant reading start coming up it has more to do with tire slip than anything. On the Dynapac we found that maintaining constant temps in the heads were very important to the consistancy of the readings there. We normally did 3 pulls on any change and used the 3rd set of numbers as data points.