My first time running in the 1/4 mile, I was pretty please with my runs but not with my reaction times, here they are:

Run #1 #2 #3 #4 #5

R/T - 1.315 .832 1.011 1.099 1.130
60' - 2.588 2.798 2.585 2.550 2.423
330 - 7.120 7.111 6.815 7.009 6.701
1/8 - 10.742 10.654 10.368 10.600 10.243
MPH - 68.22 69.63 69.24 68.74 69.34
1000 - 13.812 13.671 13.398 13.648 13.269
1/4 - 16.370 16.191 15.938 16.188 15.803
MPH - 87.63 87.63 87.98 87.04 88.20




[Modified by 98bluepearlGS-R, 4:46 PM 10/27/2001]

 

your sleeping at the light and you need to practice your launches. Keep practicing, you want to shallow stage, and leave on the third amber not on the green.

 

Yeah, you could easily get that 60' time down to like 2.3 or 2.2... most of it is in the launch.

How are you launching? I normally drop my tire pressure to like the low 20s. Then launch with the engine rev'd to like 5-5.5krpm and practically just drop the clutch.

 

What kind of tires are you running? Getting wheel hop when you launch?

 

Not bad for your first time. However, as everyone says, the launch is everything. Especially with a GSR, your times should be slightly better.

Find out where your peak torque is, rev up to about 500 below that, and slip the clutch quickly on the third yellow light (not green). Practice in a parking lot. You'll probably bog or spin too much most of the time until you get it right.

Nice runs though.....best of luck dude.

 

Don't worry about your R/T too much. Get your 60' times down by practicing your launch. R/T has nothing to do with 1/4 mile time.

 

The tire pressure was at 26 the last 3 runs, I rev'd to about 4500-5000 and dropped it and had alot wheel hop.

Im running on NITTO NT450 250/50's

I will be running again this saturday, and hopefully get 15.6-15.7


[Modified by 98bluepearlGS-R, 7:47 PM 10/27/2001]

 

I think some springs would help you with the wheel hop. The H&R OE's don't even lower the car that much, but they have a 270# spring rate up front. You should consider getting new shocks too with those. Adjustable shocks help launches a lot too, but I don't know by how much because I have not been to the track with them.

Definitely avoid the stock Michelins if you want traction. When springs and tires were my only speed-helping mods (stock motor; no intake, header, or shocks) I could turn in a 15.1@92.5. That's faster than most "real world" I/H/E GSRs driven by most people (of course there are some faster, but your average modded GSR at the track does a 15.5 here ).

You should concentrate on getting your times down before you dump a lot into modifications, though. With a GSR in the state yours is in (age+intake) it is potentially capable of almost a second better in the 1/4. PRACTICE FIRST! When you are starting out, it yields better results than most modifications you do.

 

I didnt have ythe MICHELINS on, I had NITTO NT450 205/50's on. Yeah im gonna pracice, Im going back next saturday, and hopefully I can get 15.6-15.7, thats what Im hoping for.

 

thats a decent time, its the trap that bothers me somewhat... you should be trapping at around 90 even if you are stock.... when is the last time the car had a tune-up?

 

I havent had a tune-up since I had it, I had it for under a year, and has almost 47L miles on it.

 

you either cannot drive, or your car sucks.

i am a terrible driver.


[Modified by LeeChun GSR, 8:12 AM 10/28/2001]

 

When is the best time to shift, I was think about that today, I redlined 1st, 2nd, 3rd and when I went to 4th I was already through, does this have anything to do with the times!

 

I beleive a GS-R needs to be shifted just a little before redline. As for the tune up, you could possibly be in need of one.
As for the launch, try about 23 psi in the front and instead of dropping the clutch, bring the revs up to 5000 and slip it...


Jason

 

damn that high of time in a gsr, its all about driving i guess. my LS times (short ram intake, and exaust, 16 in rims and 80 degree night)

R/T - .590
60' - 2.368
330 - 6.771
1/8 - 10.405
mph- 67.25
1000- 13.530
1/4 - 16.188
mph-83.98

 

It was about 47 degrees the whole day!!!

 

my friend was doing 15.5s-15.7s in his SE with a short ram intake and nitto 450s......

 

My GSR was able to get a 15.6 at 95 degrees out w/just a short-ram intake/underdrive pulleys w/stock balled out michelins. With better tires, I think it was good for a 15.1-15.2 because of the poor 60' times it was producing. '99 GSR.

 

Thats correct, clock doesnt start until the laser is broken. Technically you could sit at the line for a minute then go and turn in a normal time.

Ive gotten a 15.1 @ 93 at the track with my setup (CAI, LSD) with the stock michelins! Ive managed a 14.89 on the street with a better surface with a gTECH. Im able to avoid wheel hop from over inflating my tires. Im dumping at 6-7k and getting really good hard launches. And Im just grazing the rev limiter in every gear. Practice your quick shifting, if you can shave off .25 sec from every shift, thats an entire second.

Course now I have different tires so i have to play with my launches again. I recommend that Z10 kit to eliminate wheel hop. It will do a much better job than springs or stupid engine mounts will.

 

98bluepearlGS-R, I heard you say you drop the clutch at 4500 up there in the posts. Don't just drop the clutch. That's one of the reasons you're going to get wheel hop. You want to slip the clutch quickly around that rpm.

 

the day I bought my 95' GS-R I ran a 15.3 but I don't have my slips here at work to show keep practicing I usually launch at about 1300 to 1500 because my tires suck and will just go up in smoke if I launch much higher but everyone get's the feel of it after awhile.

 

My 2000 gsr went 14.9 with i/h/e. the first time it went 14.9 was when Evil drove it, the second time i drove it, i went 15.0 then 14.9 afterwards. All this was accomplished with shitty michellins.

 

Cool, thanks for all the info, I will be going again on Saturday, hopefully I can do better.

 

what brand and type I/H/E GSRACER? Just wondering if i see any correlation btwn. good products and good performance.

 

you mean 205/50

yeah, as others have said, don't worry about your RT right now, as that doesn't add onto your time, work on your 60' with the way you launch, try feathering the clutch out instead of just dumping off of it.

once you get your 60' down, then work on your RT.