12.568 in an NX-R

[Android 360]

i thought id just let u guys know of EVLNXR.. a very quick kiwi boy..

http://www.nissanz.net.nz/phpBB2/viewtopic.php?t=154

check it out

[BROADZ]

hayden would love to read this, he is doing similar mods to his white NX-R.
wow* impressive, such a heavy car doing those times

[sicknx]

yeh i heard about this nx-r... what a weapon

[Howie]

damn that's quick.

[GTS20tExa]

that is impressive, especially seeing as we're using the same gearbox. Only thing that pisses me off is the 245km/h top speed, I was hoping to get maybe 260-270 out of mine.

[DJ`aCiD`C]

O_o
impressive :D
i wanna beat it, hahah

[wheelspin]

I've seen that car on the SR20 forums. What a beast. That's the fastest B13 I know of. Even quicker than the Gonzo SR20VET NX2000!!

[rob_n13]

that's a hell nice ride i might just have to beat him once i finaly get my hands on an nxr

[Android 360]

heh good luck..

[Lexx]

Hey, i've just recently purchased a NX Coupe after seeing this guy in a performance car magazine, there is also a NA NX coupe which runs 13.something which I think is excellent.
I'm hoping to mod my car out sometime soon, the closest thing its currently got to a mod is exhaust extracters, but ya gotta start somewhere!

I'm thinking of going with something completly different to what you guys have posted in this forum so i'll keep ya posted on how it goes, money's a little short currently so i'm just looking around, planning out what will work best and learning as much about engines as I can.

That white NX is the sexiest car by the way, i think i'll sell my car and buy a ticket to Canada to nick it :P

[Akela]

i looked at the time and went shit! 12.568 @ 184...naturally i thought in mph and went shit! then i realised it was in kph...lol! 131mph now thats really impressive. With those miles the dyno must be under reading! I'd think it'd have more power!

[chris2]

and you still trust that horsepower/qtr calculator thing...
thought you would have worked that out.... :mexsmoke:


oh and 184kph does not translate to 131mph.. which im sure is where teh error is!

[boostinhard]

Hey,
lol you bet me to it chris... Equals 112mph, similar to you Akela, except he's got around 3/4 of a second on ya!
Sam

[Akela]

Yeah my bad i converted it by hand and use 1.4 instead of 1.6! It actually is 114mph boostin. 1.4 is for hp to kW, go too much maths in my head. lol gettin confused!
Just a little physics lesson for u boys just so u know i'm not talkin shit! F=ma remember that from high school? P = Fv, therfore P = mav. mass of the car we know, acceleration can be determined through v = u + at. v = final speed and u = intial speed! All the variables are accounted for hence we can determine are P value in kilowatts! Remeber u gotta use the standard si units to get the correct answer!

For my car:
form v = u + at ---> 111.5mph = 0 + a*13.321s
convert mph to meters/second ---> 49.555 = 0 + a*13.321
from this equation a = 3.7201m/s^2
put that into the formula P = mav
---> P = 1100 * 3.7201 * 49.555
P = 202764Watts
therfore Power = 202kW @ the wheels
I did the exact same calculations for ur car Sam and i came up with 129kW! U know they use these calculations in base form to launch rockets? Real simple stuff u learn in high scholl yet real useful!
But no i must be wrong using those calculations! they are nothing near the dyno values...yeah physics must be wrong cause boostin and chris say so! U always talkin about ppl talkin crap boostin...practice what u preach man it seems like ur takin it a little too far!

[boostinhard]

Hey,
yeah it is 114 - didnt bother with the decimal places, just did a quickie in the head. 114.332299 etc. actually. Wouldnt say I was talking shit though...
Oh and dont worry, I know the physics, just you and I both know that in terms of using times to work out killowatts aint all that accurate. Way too many variables, traction, power curve etc. None of these are linear and therefore the algorithm is a trade off.
So where exactly was I talking crap and not practicing what I preach? After all, you and I both know that the 3mph he has on you doesnt equal almost eight tenths of a second.
Sam

[chris2]

did you also know many rockets were lost to failure...and the calc was dicked with many times(you need to read the book 'the mid point correction')!

how does your calc deal with an incline..how with air speed (wind)....how with air temperature being a fundamental bearing to ultimate output...the calc is useful as a guide only...i personally would not be comparing or writing home about figures obtained with the calc...

im not being a smartypants but these are relevant (you brought up the physics bit)...
id imagine the forum members are big and ugly enuf to work out what they want to beleive without this having to be censored...for opinions are all good and a good way you learn is thru good hard debate..sometimes it get personal... but thats simply heated debate..

I dont think anyone is going to hire a hitman cause we dont like the calc!( or a purple fluffy interior for tat matter)!!!

[Lexx]

Damn, those sure are some equations, i've forgotten all that crap and remembered all the stuff I learnt at music.

Just a quick ? with the digital tachometer in the NX's, when i upgrade my engine the redline will (naturally) be higher, will i need to replace the whole thing or is there a comp chip of some sort which runs it?

[Akela]

sorry i got a little buit wordy there, my bad! sometimes i get a little hot under the collar for othe reasons and get a little shitty 4 small things! i understand that there are heaps of variables, however the major of it is air resistance! The air resistance effectively(on paper) lowers the engine power, as do any other negative variables involved! hence u do not need to include it! That is air resistance will lower the final mph hence be taken into the equation meaning the car may produce more power than calculated! also it assumes acceleration is constant, however in real life it rarely is perfectly constant, but u'd find it generally is, enough to assume it is! Basically i see theses equations as good quality estimates of power!
Even dynos can't give good readings as they are all relative to settings and conditions!
My car is now running 20psi, it was on a dyno dynamics dyno, the settings were wacky! My car produced 220hp at the wheels. Firstly it kept spinning on the dyno! Next time i go he plans to move it to allow more room to tie it down harder! Also in the morning a skyline was on there producing only 40 hp! At first the tuner was not to phased but when he took my car for a drive he said that he's pretty sure its producing alot more!
I'm getting a dyno sheet 4 it soon as the printer was not working at the time! The tuner is now really interested in the car and wants to play with it more!
I'm not 100% happy with it but he seems keen to improve it! but hey it goes so much harder now! Its scary!

[Rascal]

dude ive been in your car to say it goes HARDER, really is scary!

[boostinhard]

Hey,
what about gear changes? didnt take them into equation either. Plus your equation can work over any amount of distance. I would like to see you work out your cars power in a 5m distance (or a 4 mile distance for that matter) to show the variances in the equation. Dyno's arent 100% accurate either, but are a hell of a lot closer...
220hp aint bad, would have expected a fair bit more. Spining the wheels on the dyno, didnt have an oil leak or something did it? Thats not usually enough power to lift off the dyno hard enough to spin the wheels, unless the car was strapped down really poorly. Lol, tuners allways want to have another play with the car, they're getting paid 100's an hour to do so! hahaha
Sam

[Akela]

yeah it was strapped down poorly he didn't expect it to go that hard, the dyno needs to be moved, he wants me to run it and then he'll look at it again!! nah he doesn't want any money! he just wants to play with it more! his words! They are a new buisness here! he wants to get into microtech tuning more, he mainly does haltech so he's trying to get used to microtechs with my car!

[boostinhard]

Hey,
risky shit dude... I would reckomend only taking a car such as yours to a microtech professional that knows exactly what they are doing... Regardless of the price, its a lot cheaper than replacing a melted piston.
Sam

[Akela]

True! yeah its getting looked at by one soon, he had a friend of his here who works/own Buzzengines here look at the maps as well, he use to work for microtech tuning them, he said the maps were fine but i need to organise some time with him to tune it for fuel efficency! it's not leaning out though! I was there for the tuning.

[rusty]

crazy shit i went for a quick spin in this car bout 6 months ago n n scaried me at 14psi i cant image it on 20psi crazy work man hope to go for another ride in it soon russ.......

[scorpile]

Dudes... just take care...

and please... stop fighting each other...

Akela... do you think your 1/4 mille will be better if you get the rear hatch, the trunk tyre and the targas out?