Okay I took my 2000 ITR to the track this weekend (my very FIRST time running at a track) and I ran a 14.591 with BAD wheel hop and I bogged down, and the second run I ran a 14.213 with a 2.051 60' foot time (with my steering shaking the whole time down the track, but i dont know why) and the 3rd run I broke an axle right at the line . But I am planning on putting a lightweight flywheel and a decent clutch in my car, along with buying some BFG drag radials, but what I am wanting to know (from someone with personal experience) is how much do you think the JDM ITR FINAL DRIVE will help out my E/T's if I do get it along with the other stuff, compared to not having it but having the other stuff i plan on buying

my mods are as follows....Skunk2 Stage 2 Cams, JDM ITR 4-1 Header, Test Pipe, Tanabe Cat Back Exhuast, Injen CAI, VAFC, chipped P28, and Tuned, it dynoed at 201.3 whp and 138 ft. lbs. of torque, just to give you an estimate of what I am dealing with, any help will be appreciated, THANKS

 

u should be able to hid 13's with that much whp. how did ur axle break? how high are u launching?

i think a lightened flywheel and clutch might not make u that much faster in the 1/4mile.. but will make it much more responsive and no problems with clutch slipage.

4.785fd is a nice mod. never driven the same car with the stock 4.40 and then with the 4.785 at the track. but on street it feels way better. i think with all 3 mods u should drop a few tenths.

 

If I am not mistaken, 2 years ago when I got mine, people were claiming to shave 4 tenths off.

If you need to drive an ITR with a 4.785 FD, you know where to find me.

 

I'd say it's good for 2 tenths...

Oh and ur steering was shaking b/c your axel was locking-up about to go boom.

 

Well i had to launch pretty high to prevent wheel hop, when i first launched it was at 6,000 rpm and i got BAD wheel hop, so I launched higher the second time, 8,000 rpm, (which is BAD, i know) but I needed to, so I could prevent wheel hop, But I havent talked to much people who run at tracks, Cause I hear alot of people kinda feather the clutch out instead of just dropping it, but I think I had to launch so high cause I was using the Falken Azenis tires up front as well. But now I know why I hear bad stuff about those tires on the track. On the street I LOVE those tires cause when I launch with them they spin but pull me out of the hole, but at the track when I launched HIGH I think my clutch slipped off the line for a sec then it caught. And I didnt get much wheel spin either. Cause it kinda like paused for a sec off the line, then it just threw me back while it took off. But 2 other peeps broke down with the Azenis's that night as well. Well JP I just might have to ride in your car to see if I want the JDM FINAL DRIVE or not lol

 

I told you fool!

He forgot to mention that the 14.2 was at 2800ft. He pulled a 2.0 60ft, I don't think that he could have done too much better than that.

It was odd to see how many people with Azeni's tore **** apart. This was at Las Vegas Motor Speedway. I think with your current mods you should hit high 13's at sea level. With a clutch/flywheel and the JDM FD...I would even go so far as to say you'd hit 13.0-13.2's with drag radials, but I'm quite bias cause I want you to hit those numbers .

Good luck man .

 

ditch that jdm 4.7fd and go with the ATS 4.9 FD, we all use it in our cars which get many hours of track time (road race) and a few passes at the local drag strip. its a world of difference from the stock 4.4 to a ATS 4.9 and it doesnt cost all that much either, and i got one for sale PM me if you're interested in it.

 

If you get it, sell me your stock final drive


PS I went to the track my 1st time too, broke my differential at the launch of my 3rd run

 

i have a 4.9 final drive and was trapping 99mph this past Friday night..... If you will trap over 100mph, you might want to look at the 4.7 instead... reason I say that, is you might have to shift into 5th with the 4.9 final... and it's only a little bit more agressive than the 4.7. They're both Actually, just get the 4.9 and raise your rev limiter by 500rpms and you'll really reap the benefits.....

Aww, what the heck - just get a final drive and go back.

You're definitely balsy though! 8k rpm launch on azenis and you didn't feather it? What clutch do you have? I thought I was crazy launching at 7k rpms on the 4.9 final drive, but I'm probably making 15whp less than you..... I just spun them like crazy, hopped wheels (with motor mount inserts at all 5 points), and still ran only a 2.3 60ft.....

How did you pull a 2.0 60ft at that altitude? What was your mph with that 14.2? I ran the same et on Friday in 52 degree weather on azenis, but I couldn't do better than a 2.2 60ft..... Tips?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dupalala &raquo;</TD></TR><TR><TD CLASS="quote">If you get it, sell me your stock final drive


PS I went to the track my 1st time too, broke my differential at the launch of my 3rd run

</TD></TR></TABLE>

You're looking for a USDM FD (4.4)? Hell, even I have one sitting in the garage collecting dust like a good number of people here.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thk &raquo;</TD></TR><TR><TD CLASS="quote">

You're looking for a USDM FD (4.4)? Hell, even I have one sitting in the garage collecting dust like a good number of people here. </TD></TR></TABLE>

Me too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rdriver &raquo;</TD></TR><TR><TD CLASS="quote">

Me too. </TD></TR></TABLE>

Me three

 

i always thought the best way to get rid of wheel hop are to install a traction bar.
I think Z10(think that's the brand) supposedly made a good one. I'd say get one of thoughts and see what happens?
I'm not 100% on all this info so if some of u veterans wanna confirm or expell this idea please do

 

What were your trap speeds? With that much power at sea level you would be hitting mid-low 13's easy.

on the 60' times. I've hit 2.0's twice on SO-3's which aren't drag tires either, but from what I've seen Azenis do pretty darn well. What kinda of 60' do you pull consistently?

 

haha sorry i have been slacking on your guy's questions, let me type out my time slip, so you can see.......

R/T... .705
60'... 2.051
330...5.899
1/8...9.100
MPH...76.61
1000...11.858
1/4...14.213
MPH...96.14

Black R :my clutch is still the stock one, I got my car with 18,000 and I now have like 47,XXX and its still not bad (with ALOT of racing on it) i am suprised with it cause the only time it felt wierd is the night when i went to the track

Active Aero :Being this was my VERY first time running at a track, i only ran Twice being the third time i broke an axle, my VERY first run, i launched at 6,000 and got wheel hop BADLY and my 60 foot was a 2.269 and my 1/4 ending up being a 14.591@95.80 mph

Thanks for responding guys, i am highly thinking on getting the JDM 4.7

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TyPe_R_GuY &raquo;</TD></TR><TR><TD CLASS="quote">Okay I took my 2000 ITR to the track this weekend (my very FIRST time running at a track) and I ran a 14.591 with BAD wheel hop and I bogged down, and the second run I ran a 14.213 with a 2.051 60' foot time (with my steering shaking the whole time down the track, but i dont know why) and the 3rd run I broke an axle right at the line . But I am planning on putting a lightweight flywheel and a decent clutch in my car, along with buying some BFG drag radials, but what I am wanting to know (from someone with personal experience) is how much do you think the JDM ITR FINAL DRIVE will help out my E/T's if I do get it along with the other stuff, compared to not having it but having the other stuff i plan on buying

my mods are as follows....Skunk2 Stage 2 Cams, JDM ITR 4-1 Header, Test Pipe, Tanabe Cat Back Exhuast, Injen CAI, VAFC, chipped P28, and Tuned, it dynoed at 201.3 whp and 138 ft. lbs. of torque, just to give you an estimate of what I am dealing with, any help will be appreciated, THANKS </TD></TR></TABLE>
damn im pushing 195WHP and my best i have ran was 14.114 with a 60ft of 2.191 and im kanda mad and stressed out that it doesnt get lower, but im running falken azienas they grip but i want to see what i can do with BFG drag radials too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by capcon83 &raquo;</TD></TR><TR><TD CLASS="quote">
damn im pushing 195WHP and my best i have ran was 14.114 with a 60ft of 2.191 and im kanda mad and stressed out that it doesnt get lower, but im running falken azienas they grip but i want to see what i can do with BFG drag radials too</TD></TR></TABLE>

but what eleveation are you at capcon83? i was at like 2800ft. above sea level

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R &raquo;</TD></TR><TR><TD CLASS="quote">i have a 4.9 final drive and was trapping 99mph this past Friday night..... If you will trap over 100mph, you might want to look at the 4.7 instead... reason I say that, is you might have to shift into 5th with the 4.9 final... and it's only a little bit more agressive than the 4.7. They're both Actually, just get the 4.9 and raise your rev limiter by 500rpms and you'll really reap the benefits.....
</TD></TR></TABLE>

I never shift to 5th with my 4.9 and I run 101 mph

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Asahi &raquo;</TD></TR><TR><TD CLASS="quote">

I never shift to 5th with my 4.9 and I run 101 mph</TD></TR></TABLE>


I must agree with you. For some reason, I was topping out 4th gear at the strip last time I ran and thought it was just at 100mph...

Running my calculations, it appears that ~107-109mph is where 4th gear with a 4.9 final drive would top out at (depending on tire selection; 205/50 or 225/50).

Next time I go back, it'll be on 225/50/15 bfg drag radials (hopefully)!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R &raquo;</TD></TR><TR><TD CLASS="quote">
Running my calculations, it appears that ~107-109mph is where 4th gear with a </TD></TR></TABLE>

In 4th on 205/50/15
107.7 mph @ 8500 rpm
114.0 mph @ 9000 rpm

In 4th on a 225/50/15
111.4 mph @ 8500 rpm
118.0 mph @ 9000 rpm

 

Just in case you were wondering why your car was shaking and how you broke your axle: When you wheel hopped the first and second run, you probably fractured one of the bearings inside the axle. This will cause your car to act like balance is way off on the wheels. Then, when you lauched it the 3rd time, it just snapped. Axle hop is probably one of the biggest reasons why axles break so much. I fractured 2 axles in one launch once, the car felt like both wheels were bent. Lowering tire pressure will decrease the amount of axle hop you will get too.