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Author: Subject: gear ratios
graememk

posted on 16/3/07 at 12:30 AM Reply With Quote
gear ratios

i'm using the nissan box what are the ratios like compaired to a ford box

Gear Ratios
Manual Transmission
1st 3.321
2nd 1.902
3rd 1.308
4th 1.000
5th 0.838
Reverse 3.382
Final 4.363

i'm using a sierra 3.62 lsd

what differances should i exspect ?






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gazza285

posted on 16/3/07 at 12:51 AM Reply With Quote
3.65, 1.97, 1.37, 1, 0.82.





DO NOT PUT ON KNOB OR BOLLOCKS!

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bigrich

posted on 16/3/07 at 12:52 AM Reply With Quote
just copyed this from a previous post by flak monkey
1st3.65:1
2nd 1.97:1
3rd 1.37:1
4th 1.00:1
5th 0.82:1
nissan is slightly taller in 1st ,2nd and 3rd but a fraction lower in 5th. in general not too different

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miegru

posted on 16/3/07 at 04:32 AM Reply With Quote
The taller 1st it should be much better.

Still; with the torque of a turbo you will probably won't use 1st too much. Moving away from second should be easy.

An lsd and starting from second and reaching 100km/h in one gear should give you a very interesting acceleration time!

Enjoy!

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procomp

posted on 16/3/07 at 08:35 AM Reply With Quote
Hi the trouble is that all the ford ratios listed above are std.

These are possibly suitable for a N/A car for road use. But if you now have a turbo and a bit more bhp you will find that those ratios are all a bit low for a car the weight of a kitcar.

The first ussual upgrade is to a set of rocket ratios.

Ratios: 1st:- 2.48 2nd:- 1.69 3rd:- 1.21 4th:- 1:1

These are some where in the ballpark for a kitcar used for spiritted driving or track use.

For more usefull information try looking around the QUAIFE SITE.

cheers matt

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smart51

posted on 16/3/07 at 10:34 AM Reply With Quote
with 195/50/15 or 205/60/13 wheels and tyres you'll get

32.7 MPH at 6000 in 1st
57.1 in 2nd
83.1 in 3rd
108.7 in 4th
129.7 in 5th

They seem a bit low to me. 1st will be all wheelspin. 5th a bit revvy. for best 0-60 / 0-62 times, you want to hit 62.2 or more before hitting the rev limiter in 2nd

205/60/15s would do or perhaps 205/50/15 and a 3.38 diff

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graememk

posted on 16/3/07 at 11:27 AM Reply With Quote
i'm runing 225 16" from a ford cugar






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NS Dev

posted on 16/3/07 at 01:19 PM Reply With Quote
lol totally irrelevant but my new "BEC" grasser is geared for 63mph in first and 94mph in second..........for offroad use!!!

Goodness knows what it might try and do in 6th...................... (bog down a lot I think! )





Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion retro car restoration and tuning

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