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Army Boosted
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Discussion Starter · #1 ·
Hey I finally got my 96' black 200sx se-r out to the track., due to bad solenoid i could not spray :mad: so i had to settle running all motor. the night before i put in the 91' jap intake cam (pulls great by the way) and i also have a fuel press. reg, air filter, greddy sp, advanced timing, act clutch. First run of the night i redline and get a 15.875 . second time i got my best run in.
2nd run
R/T .808
60 ...2.473
330...6.662
1/8...10.08
MPH...71.36
1000....13.024
1/4....15.521
MPH.....90.12...........(why so crappy?)

another thing i have trouble dealing with was i got a reaction time of .509 on my 4th run but got a 15.596 @ 89.29 with an 1/8th mile of 10.118.....another reaction time i got that i thought was phat was a .539 :) but a 15.697......so if you guys could write back with opinions, suggestions i would greatly appreciate. also what you'll think i could run with my 75 shot of NOS, (hopefully that damn gs-t that talked smack to me!)
Alright guys thanks a lot, i'm open to suggestions, also my tire pressure was REALLY low, thanks
 

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Reaction time does not really factor in to the 1/4 time I dont think, or at least I was told. Its jsut the time it takes you to pass that staging line from when you get the green, after you cross, your 1/4 time starts. What octane were you running? Try setting it back to 17 with the 91 cam, run 93 or 94 only a 1/4 to 3/8 of a tank full and take her to 7000 rpms. I have the JWT ECU, so I was able to squeeze out 7500-7600 rpms while running, it was nice! :D Weather has a good factor too, the colder it gets, the less traction you get. You may feel like its griping, but sometimes its not. Also check to see if the track sells racing fuel, usually theyll have 110, 112, & 118 octane and probably higher. I like to take 1.5 gallons of 118 mix it with the 1/4 tank of 93, run around the street for a minute to mix it up then run the **** out of her!
 

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what's up fellow black b14 owner! :D

without nitrous, i ran a best of a 15.5 @ 87 MPH. as you can tell your trap speed is higher than mine, which generally means you're making more horsepower than me. you could probably run at least a 15.2-15.3 if you could get your 60 foot times down! as i can see, that is really what's hurting you. i got **lucky** by getting a 2.16 60 foot time on street tires. but i'm finally able to get 2.2's all day. if you could knock down your 60 foot's from 2.4's down to 2.2's, i can see you hitting a 15.2 @ 91 MPH :D

at what rpm are you launching at?
how much air pressure in your tires?
at what rpm are you shifting at?


good luck, hope this helps alittle
 

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JDM style
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black 200

another black se-r owner rite here too

when i ran i had my psi at 22 in front, and i raised the pressure in back, launced @3k

im gettin that jdm cam soon, did u have a shop install it, or did u install it? if u had a shop do it, how much did it cost?
 

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Launch

as the guy above said, it's all in your launch. You need to get that 60ft time down in order to bring down the ET.

Try launching between 4000-5000RPM slipping the clutch slightly so your wheels dont spin, and once you get out of the hole get off the clutch real fast. Dont worry about the reaction times, take your time to perfect your launch THEN you can start worrying about the tree.

Also, if you want a little help in the launching department, you could pickup some Drag Radials. I tried some and got the same 60ft times as I did with street tires(2.1-2.2) But, the drag radials were a whole lot easier to launch with. Street tires take a little practice and finesse to launch well on.

Good luck
 

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Whisky Tango Foxtrot
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863 Posts
SE-Rious B14 said:

R/T .808
60 ...2.473
330...6.662
1/8...10.08
MPH...71.36
1000....13.024
1/4....15.521
MPH.....90.12...........(why so crappy?)
Here is one of mine to compare to:
2.360
6.447
9.864
72.31
12.824
15.335
89.68

My car was completely heat soked for the runs at this track hence the unusually low mph. I usually trap at 91. You should definetly have a 15.2-15.3 in that car. In reference to 60' times my car hits 15.4 w/ 2.4 60', 15.3 w/2.3 60', and 15.1 w/2.2/2.1 60'
 

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Bad Banana
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1,411 Posts
In my stock NX (well just timing and Hot air intake), I launch at 5500rpm, and shift at 6500 (you have to remember peak power is at like 6300rpm). My best time was a 15.451 with my brakes locked near the end of the track and a 2.2 60'. Try different conbinations of launches and shift points and see what works best.
 

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Army Boosted
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565 Posts
Discussion Starter · #8 ·
The night i went it was really cold, unusually cold for florida, and a lot of my se-r friends were telling me to launch at about 4500-5000 (due to the ACT clutch)....when i tried launching at 4000 i bogged and ran a 15.89. My tire pressure was at about 15-20 the whole time not really sure (bad tire guage). before the cam i would of shifted at 6400, but everytime down the track i took it to at least 6900. Should i try powershifting? so here is more accurate info so hopefully i could get more help to lower my times. also, my friends (se-r owners) installed the jap intake cam for me.THANKS!
 

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Army Boosted
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565 Posts
Discussion Starter · #9 ·
Oh yea another thing, how could you tell the degree you set your timing too. thanks
 

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sleeper
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5,445 Posts
Just wondering... why do you have the fuel pressure reg? Is it because you have NOS?

Anywayz.... yeah, reaction time has nothing to do with ET. RT is just how long it takes for you to cross the start light beam after the green on the x-mas tree goes off.

With the 60' time... a good street tire time is 2.2, I've only done 2.35 myself. It's probably my launch technique, I don't really like slipping the clutch what is what you need to do to cut a good time. To need to slip it so that you don't roast the tires but also don't bog. Since I don't like to slip, I just roast the tires :)

90 mph is pretty damn good in my opinion with those mods.
 

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why are you guys shifting so early? the peak hp is at 6400rpm but that doesn't necesarily mean that there is NO POWER after that point. to get the most hp under the curve and most avg hp u would have to take it all the way to 7500.
 

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Army Boosted
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565 Posts
Discussion Starter · #12 ·
spdracerUT said:
Just wondering... why do you have the fuel pressure reg? Is it because you have NOS?
Yea, i run an NOS dry kit, 75 shot. couldn't spray that night due to bad solenoid, what type of times do you think i could get with spray, so feel free to respond, thanks..(i set the fuel. psi to 42)
 

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Bad Banana
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Limited Slip: Our cars don't pull all the way till redline. In my opinion, by shifting at 6400-6800, my best times have occured and are more consistant. I'm not sure if some of the mods you have are giving you more top end power, but on my stock NX, I found this to be best. I'll see what happens when the DET comes.;)
 

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man i gotta take her all the way till the 7100rpm rev limiter.. its still pulling even when it hits that.. check my dyno to see my power bands y0
 

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Just few points on what was said in the whole thread.

Lightwheelspin is good out of the hole as it keep you in the peak torque of the motor. My best 60' on street tires is 2.04.

Shift out of first as close to redline as you can get, into third at about 7100rpm (7200-7300 indicated) and into 4th (If you need it) at about 6900rpm (7000-7100 indicated)

14.1 is my best ET with header, exhaust, cams, intake, pullies, ECU.

Try it.
 
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