1/4 mile time -- NA1 with I/H/E

[jond]

I've searched the forum, and read the FAQ. I see a lot of stock magazine times.
It seems that pre 97s with I/H/E make the same whp as 97+ models, but obviously the gearing is different.

Anyone know what a 91-94 NSX do in the 1/4 with I/H/E?

 

[B Feelgood]

Low 13's?

 

[ak]

Low 13's?

That's about right. 13.3@105mph here.

 

[Nihilation]

That's about right. 13.3@105mph here.

Short gears with the 4.55 diff and hello 12's @ ~108mph?

 

[NetViper]

Short gears with the 4.55 diff and hello 12's @ ~108mph?

I doubt it.

 

[hybridnsx]

Yea i'm interested in this too.... I have 4.23 R&P, gears and I/H/E & JUN flywheel... anyone know around what 1/4 should be?

 

[NetViper]

Yea i'm interested in this too.... I have 4.23 R&P, gears and I/H/E... anyone know around what 1/4 should be?

They did the 1/4 mile in the latest SCC with that 92 NSX and it was around 13.6 @ 102-3 I think. Not a great time and the MPH sucked. I am guessing they don't really know how to drive it. It has similar mods.

 

[hybridnsx]

They did the 1/4 mile in the latest SCC with that 92 NSX and it was around 13.6 @ 102-3 I think. Not a great time and the MPH sucked. I am guessing they don't really know how to drive it. It has similar mods.

wow that really sucks.... i think its time for a CTSC/AEM/Hi-boost upgrade! what do you think the 1/4 would be with that and my mods? mid 12's?

 

[B Feelgood]

Yea i'm interested in this too.... I have 4.23 R&P, gears and I/H/E & JUN flywheel... anyone know around what 1/4 should be?

Only one way to find out :smile: :wink:

 

[Ojas]

Short gears with the 4.55 diff and hello 12's @ ~108mph?

Depending on how "strong" your NSX is compared to average, you can get close. Paul has done 108 MPH with Comptech intake, headers, exhaust and very basic weight reduction. ET was almost 13 seconds flat. See Your best 1/4mile time? With the 6-speed he now has or with different gears (see FAQ: Gears), it would be in the 12.8-12.9 range.

 

[NetViper]

wow that really sucks.... i think its time for a CTSC/AEM/Hi-boost upgrade! what do you think the 1/4 would be with that and my mods? mid 12's?

Yeah, mid 12's. 112-114 MPH 1/4. Pretty strong.

 

[nsxtcy85]

thats odd ive seen guys post before that they were gettin into low 12's with
I/H/E and short gears.

 

[Ojas]

nsxtcy85,

I'm not aware of any 3.0L NSXs that are low-12s with just IHE and gears. In fact, mid-12s would be considered a great time for a 3.2L with mods. For example:

AJKS's 2002 NSX-T
intake, headers, exhaust, CORRECTION: street tires (not drag radials as I originally posted), weight reduction including lightweight brakes, 1/4 tank fuel, etc.:
12.47 @ 109 MPH (see 2002 NSX times (1/4 mile) with 4.235 gears)

dswartz's 1998 NSX (coupe)
intake, headers, exhaust, drag radials, performance clutch, test pipes, weight reduction, 1/4 tank fuel, etc.:
12.53 @ 111.45 MPH (see Drag Racing Racing Result)

 

[John McCain Racing]

nsxtcy85,

I'm not aware of any 3.0L NSXs that are low-12s with just IHE and gears. In fact, mid-12s would be considered a great time for a 3.2L with mods. For example:

AJKS's 2002 NSX-T
intake, headers, exhaust, drag radials, weight reduction including lightweight brakes, 1/4 tank fuel, etc.:
12.47 @ 109 MPH (see 2002 NSX times (1/4 mile) with 4.235 gears)

dswartz's 1998 NSX (coupe)
intake, headers, exhaust, drag radials, performance clutch, test pipes, weight reduction, 1/4 tank fuel, etc.:
12.53 @ 111.45 MPH (see Drag Racing Racing Result)

I guess I need to get my 60 foot times down...

12.64 @ 113.4 1/4 Mile N/A

My goal is to hit the 11's and then I'll go F/I

 

[nsxtasy]

There are a lot of variables that can affect acceleration times, including driver ability, mods (some I/H/E will add more hp than others, and usually there are other mods as well), equipment in the car (spare tire, tools, etc), amount of gas in the tank, etc. Magazine times are fairly consistent (for a '91 NSX, almost always 13.7-13.9) because they usually control for all of these variables, but otherwise, the times are going to be all over the lot.

Bob Butler has calculated that adding 15 hp to a stock '91 NSX results in a reduction of 1/4 mile acceleration times of 0.32 second.

 

[SoCalDude]

Short gears with the 4.55 diff and hello 12's @ ~108mph?

See : http://www.nsxprime.com/forums/showthread.php?t=44376

 

[Litespeeds]

I have a 92' NSX and the only weight reduction is removing the spare tire and tool kit. I weigh in around 200 lbs and the car has heavy 17x8 and 18x10 Volk AV3 wheels with 275/35/18 Bridgestone S-02 tires.

The mods are: Cantrell AIS, Uniflow filter, Junn lightweight flywheel, Short Gears, high performance clutch, Comptech headers, Comptech exhaust and my best is:

Sacramento Raceway on 10/24/2003 at 6:14pm

Reaction: .802
I1 : 2.067
I2 : 5.714
I3 : 8.314
MPH (I3): 83.161
I4 : 11.141

E.T. : 13.258
MPH : 106.335

Since then, I changed to an Anytime Exhaust as well as Dunlop SP Sport Race 265/35/18 rear tires which should help a little on my 0-60' time. Can't wait to go back out and see if I can do any better.

 

[AJKS]

nsxtcy85,

I'm not aware of any 3.0L NSXs that are low-12s with just IHE and gears. In fact, mid-12s would be considered a great time for a 3.2L with mods. For example:

AJKS's 2002 NSX-T
intake, headers, exhaust, drag radials, weight reduction including lightweight brakes, 1/4 tank fuel, etc.:
12.47 @ 109 MPH (see 2002 NSX times (1/4 mile) with 4.235 gears)

dswartz's 1998 NSX (coupe)
intake, headers, exhaust, drag radials, performance clutch, test pipes, weight reduction, 1/4 tank fuel, etc.:
12.53 @ 111.45 MPH (see Drag Racing Racing Result)

Almost right...My 12.47 pass was on True Street tires. 285 30 18's, Potenza SO3's. I have never ran my NSX on a drag radial!

 

[Nihilation]

Almost right...My 12.47 pass was on True Street tires. 285 30 18's, Potenza SO3's. I have never ran my NSX on a drag radial!

Wow, I'd say you could drop nearly a half second off your time with DR's, maybe a little MPH too... What was your 60' like with the S03's? I wouldn't doubt that you could knock off a 12 flat @ 111mph with a true slick. Impressive for sure. Do you know what your car weighs? What type of weight reduction?

 

[RedlineRex]

i have pulled several 12.98's @ 107 on street tires (1.9xx 60'ers). I/H/E, CT R&P and short gears. i tried out the drag radials and it didnt seem to help much. got plenty of traction ... actually too much. couldn't get the tires spinning at all so it would bog unless i revved high and feathered the clutch off the line. still had trouble with the DR's even hitting the 75shot right off the line.
i could try to launch higher but would probably break something first (already snapped one CV joint years ago).:biggrin:

 

[AJKS]

Wow, I'd say you could drop nearly a half second off your time with DR's, maybe a little MPH too... What was your 60' like with the S03's? I wouldn't doubt that you could knock off a 12 flat @ 111mph with a true slick. Impressive for sure. Do you know what your car weighs? What type of weight reduction?

Only advantage of having slicks would be is a 4-5000 rpm clutch dump. I do not see a half second reduction from this alone. Maybe .2-.3 off the time and due to a taller tire size, 2-3 MPH more or so. I know how to launch the NSX and get little tire spin. 60 Ft times are always 1.8's

Last weigh in at 2840 I was not in the car and I had a quarter tank of gas. I did have a full bottle of Nitrous (22lbs).
I have the following done for weight savings.
Spare tire and bracket removed
Oddesy Battery (14lbs)
Volk LE3718inch wheels
Tein RA's
Carbon Fiber side Vents
K Craft Carbon Fiber mirrors
Recaro SPG's
Engine cover removed
Comptech headders
Tatiec light weight center exit exhaust
Carbon Kevlar rear diffuser
Ti Brake set (almost 100 pound savings alone)
OEM NSX R hood (yes, the real deal) about 8 pounds total weight

I guess short of taking out the floor mats, AC, radio, change the glass hatch to lexan I guess there is no other weight savings to be had.

 

[BadCarma]

Yea i'm interested in this too.... I have 4.23 R&P, gears and I/H/E & JUN flywheel... anyone know around what 1/4 should be?

With those mods to the tee....why yes I do know:biggrin:

 

[Q]

Ti Brake set (almost 100 pound savings alone)

Is this the ZMI titanium setup? If so, I'd like to talk to you offline about that.

 

[hybridnsx]

With those mods to the tee....why yes I do know:biggrin:

annnndd the time would be........

 

[liftnot]

Is this the ZMI titanium setup? If so, I'd like to talk to you offline about that.

Q: I spoke to AJKS(John) about his set up last year. His car was in Honda/Tunning and I had to ck with him to make sure they were really "Ti" brakes. He gave me a number of the guy who was making it but due to the increase cost of Ti and manufacturing/insurance costs, limited market, its no longer avail. to the public and ZMI is no longer in business.

John thought ZMI may have a spare set for the NSX laying around but I tried with no luck. I think the company still makes it for open wheel racing cars only and they have no interest in aftermarket field. According to John, his Ti set up works great with no issues. Just the lower rotational unsprung wt. would make a big difference in acceleration but not many people is willing to spending $10k+ for brake upgrade with Ti.