Found some alternate 5 speed gear ratios for our transmission

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Jul 19, 2007 | 08:13 PM
  #1  
Found these on an Australian pulsar GTI-R webpage. The gear ratios here are for the RA and RB spec N14 Pulsar GTI-R available overseas. Not that they're terribly useful for most people, but i thought it was interesting. For the record, the stock gear ratios in the RA spec GTI-R are the same as ours in 3rd, 4th and 5th generation maximas except for Fifth gear, which is the taller gear like that used in the L30 Altima.


What really has me interested is the taller 1st gear. Since I'm going to be replacing 1st gear in my transmission anyways, I'm going to inquire with dave b about the possibility of getting that RB spec 1st gear (if it's available still) as it's a good bit taller than the stock 1st gear is, which will help with the high power FWD 1st gear spinnage a little bit (along with taller tires).

I'm assuming these gears would all work in a 3rd, 4th, or 5th gen manual transmission because the research I've done indicates it is the same gearbox, just different ratios.


Here are the ratios, and also screenshots of the speed in each gear as taken from the Fatboyraceworks gear speed calculator except with the maxima 5th gear substituted instead of the Altima/GTI-R RA 5th gear since basically no maxima has that except the couple people who have done that swap).

1st - RA: 3.285 (RB: 3.067)
2nd - RA: 1.850 (RB: 2.095)
3rd - RA: 1.272 (RB: 1.653)
4th - RA: 0.954 (RB: 1.272)
5th - RA: 0.740 (RB: 0.911) (stock maxima 5th gear is .795)


Stock 6550rpm limiter





Typical 7200 RPM limiter



Here is where I ultimately found the data

http://www.gtiroz.net/

Here is the fatboyraceworks gear ratio calculator with Maxima gears and RB gears already filled in, in case you want to mess with the myriad custom combinations that could be made of gears, final drives, and rev limiters. There are quite a few different final drives available too, both shorter and taller.

http://fatboyraceworks.com/gears/
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Jul 20, 2007 | 10:59 AM
  #2  
wow, 46.33 mph in first gear! wish my tranny could do that.
so tranny 1 is the max spec or the RA?
and 2 is the RB i'm guessing?
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Jul 21, 2007 | 01:08 AM
  #3  
Quote: For the record, the stock gear ratios in the RA spec GTI-R are the same as ours in 3rd, 4th and 5th generation maximas except for Fifth gear, which is the taller gear like that used in the L30 Altima.

...

Here is the fatboyraceworks gear ratio calculator with Maxima gears and RB gears already filled in
............
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Jul 21, 2007 | 01:12 AM
  #4  
I know me and NEAL get of on the wrong foot but this guy never seems to amaze me thats when he aint being a smart ***..lol.But learned to know that he is a cool guy, Any way im in the process of doing something with some ppg gears myself ..Keep up the good work
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Jul 21, 2007 | 05:08 AM
  #5  
I'd be interested in finding some resonable gears. I've not had any trouble with mine yet but I don't even bother to get on it in 1st gear. I'm also not running a sticky tire.
The streight cut gears I hear are in the 2000.00 area... Not planning on doing that anytime soon.
I'd like to have a longer 1st gear also.
I'd get a used trany and have these gears installed if they are going to take the abuse and be a better gear ratio.
Great find!!!
Scott~
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Jul 21, 2007 | 05:20 AM
  #6  
Quote: What really has me interested is the taller 1st gear.
What? You don't like the almost useless 'stump pulling' 1st gear?

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Jul 23, 2007 | 11:04 AM
  #7  
very nice thread neal....im assume your in the tranny industry?
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Aug 1, 2007 | 10:00 PM
  #8  
Yes I work in the transmission business.

Found yet a couple more different gears I believe would work. These are from a couple different U12/U13 Bluebird models. U12: SSS, SSS-X, SSS-X-II. U13: SSS-G, ARX-Z, ARX-G

1st gear: 3.400
2nd gear: 1.955

FD: 4.471 and 4.167 - I think Jclaw and others already posted these ratios though.
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Aug 2, 2007 | 07:05 AM
  #9  
Doesn't the mainshaft on the GTIr differ because it is a awd application?
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Aug 2, 2007 | 08:18 AM
  #10  
Quote: Doesn't the mainshaft on the GTIr differ because it is a awd application?
no, it is the same. I believe the transfer case is run off of the differential. I have not seen the entire workings of the gti-r transmission and transfer case to confirm that, but I have seen both shafts and all the gears, and they are the same.
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Aug 2, 2007 | 09:44 AM
  #11  
good find neal..
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