Advice on Final Drive Ratio for old mans road mini
Turbo Mini Forums

My Dads manage to kill the gearbox on is 998 clubman estate (god knows how) so going to rebuild another box for him.

He has currently got a 998 engine, but will be dropping in a 1293 NA engine in a few months so might as well go with a FD suited to the new engine now. He's on 10" wheels, never drives on the motor way, but does have a few dual carrage ways.


Not sure what final drive is best for him, what are your thoughts?

Edited by Jimster on 12th Jan, 2009.

Team Racing

3.44

3.1

3.1

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Anther vote for 3.1 here. My high compresion stanrard 998 was great for motorway drivng with a 3.1. It was still reasonably quick around town aswell

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse

Either 3.1 or 3.44, if you have either in you garage then use it.

Both will give you a good all round drive, you'll only notice the 3.44 is slightly lower geared when cruising.

If you have both in the garage, then 3.1 would be my preffered.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

3.1

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

Jims dad is a menace with the local police force, a 3.44 will give him lots of acceleration out of the bridgend roundabouts but not too much top speed

A nice revvy engine will keep him occupied and happy, and stop him joining the headlines with the other bridgend teenagers....

I'll have to see what I have kicking around.

My old mans a fussy bugger and wants he speedo to read the correct speed. Does anyone know how to work out the speedo drive to get correct speed.

10" wheels
MPI clocks (I think, 3 clock binacle and white faces)
3.1 diff (or maybe 3.2 or 3.44 what ever I have in the bottom garage)

Team Racing

I used this calculator along with the speedo drive info on Calver's site to work mine out.

http://www.tomsminisite.co.uk/speedo_calculator.php

The colour coordination that Calver talks about for speedo drives apears to be utter shite though

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse

speedycables will make one up for you jim

Think it tells you how/wot to do on there website

Rick

4.1 with an old lsd .....lol

Everyone knows that instructions only have to be read if the thing doesn't work....

3.1 or 3.2 i have a 3.44 in mine with 10's and it revs out to easy

imo a 3.44 will be a perfect for tearing about on the road as long as no motorway driving is done, but on a bigger power motor i wouldn't go below 3.2 especially with 10" wheels

Yes i moved to the darkside

Instagram @jdm_brett

id say 3.44 too for a 998, ben (r1-manx) use to squeeze 115mph out of his 1293 with a 3.44, so itll have all the legs he'll ever need, but nippy too

saying that my british open classic (stage 1 1275) has a 2.9, and i love how civilised it is compared to my old cooper...

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

3.44

2.95 with a heli box 3.1 with straight cut .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

3.1 is a nice comprimise i guess. If your more into driving than speed id go with the 2.95, expecialy on a normal ratio box. no steep 1st to worry about then!

3.44 NEVER AGAIN!

3.1 will be great with tens. Will make 1st more useful

first choice 2.95 second 3.1

hmm this makes interesting reading for my 998 as well. i have a 3.1 in the box at the moment but i have a spare 2.95 so i am unsure whether to change it now.

To add to teh thread i will be doing a lot of motorway driving but decide on the 3.1 so i dont over gear? the small bore motor i am doing.