Just wondering

Is this guy running a 4.9x final drive? Seems very aggressively close. (click on the vid oand go to you tube if it doesn't play here)

http://www.youtube.com/watch?v=BdLm85S7eVY

 

Seems like he's running it. He's fast, 1:05 around Tsukuba.

 

I believe thats a close ratio gear set.

 

In the description, it says he's running 1:06 which is moderately modified R32-R34 GTR territory. But he's shifting into 5th gear on the back straight. I centainly hope this is a track car; would go on long drives on the expressway with it.

 

Description translated:
Tsukuba circuit 1'05"259 01R　F:235/40-17　R:205/50-16
Even with the last sector 0.3 falling, clearing being faster than the lap which is taken is puzzle. 01R magic.

I assume its a 01 ITR which should have come with a 4.785 already but running out rpm like that on 17s suggests a shorter FD. The difference between the 3rd and 4th gear looks like that of the '98+ JDM ITR transmission.
5th gear seems really short though.

 

I can't wait to get my ITR on a track, a 5.07FD combined with my power level should be fun. And no, car is not a daily driver and will most likely be towed to HPDE events.

 

3rd gear is very short. I think he's got the spoon close gear set. I have a 98 spec which is the same tranny as the 01 and my revs aren't that high in 4th gear on the straights at Tsukuba. I'm shifting to fourth nearly 3/4 of the way through the back straights, and in third gear longer through the s curves after the first hair pin.

 

http://www.youtube.com/watch?v=l9YmIWXMvjE
Spoon gearset?

 

Spoon gear set does seem to be the same, but its hard to tell since Hattori is running a Suzuka Circuit which is quite different from Tsukuba.

 

http://www.youtube.com/watch?v=f7r-w7bTTzc

CW = 96 spec gearing (4.4 final)
Black = 98 spec gearing (4.7 final)
Blue = full gear tune (except second) + 4.9 final

Blue ITR = 5000rpms@60mph in fifth gear; redline at 112mph in 5th gear) YIKES!

 

^Awesome find!

Would love to hear the comments in english, seems interesting.

One correction;
Black = 96 spec gearing (4.7 final)

Also, Blue ITR = redline at 112mph in 5th gear?

I missed that one, what time on the video is that?

 

Do these ITRs have stock engines? They rev to 10 on the tach!!

 

Tsuchiya and Iida mentioned the redline thing. He actually said its at 9000rpm at 180km in fifth, so it much be tough on the expressways.

Narrator mentions that the car with the full gear tune is computer tuned, and has an extended 9500rpm rev limit and a third party exhaust.

 

So our stock ITR motors can rev up to 9500 rpm with no other supporting mods? Doesn't sound right to me.....i don't think a stock ITR motor can handle those revs.

 

For sure not a FD mod on the first video

 

I was reving 9500 on my ITR when I was near stock. Had fuel and ignition tuned

 

Wow...this is interesting. I never knew a stock ITR motor can rev that high with just tuning....good to know.

 

It's not generally recommended though, as springs/retainers will fail sooner or later if abused regularly. And then there's also no particular point in revving that high, as the stock setup peaks in power around 8k and the power just drops off with higher revs. More stress on parts and less power does not make much sense to me.