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Old 20-12-2016, 10:22 AM   #1
Marcus Nordblom
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Default 4.1 or 3.5 diff dilemma

As title says, ready to put my gripper in and toying with the idea to change the final, but unsure if i destroy the trackabaility of the car then?
It feels like it when looking at the graphs below, 4.1 vs 3.5

3.5 on 10"s gives the exact same gear ratio as 4.1 with stock swift wheels and tires

Anyone now a supplier of Mk1 gearbox rebuild kits?

Cheers

Skärmavbild 2016-12-20 kl. 11.15.44 by G13B, on Flickr

Skärmavbild 2016-12-20 kl. 11.15.21 by G13B, on Flickr
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Old 20-12-2016, 11:32 AM   #2
DVO
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I drove both and the 3.5 really takes the bite, and for that, the fun out of it. Only consider it when you do a lot of highway or regular normal use.

I am using my car just for fun and trackdays and for that 4.1 is perfect.

Dennis
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Old 20-12-2016, 01:34 PM   #3
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Quote:
Originally Posted by DVO View Post
I drove both and the 3.5 really takes the bite, and for that, the fun out of it. Only consider it when you do a lot of highway or regular normal use.



I am using my car just for fun and trackdays and for that 4.1 is perfect.



Dennis


Cheers for that Dennis,
Nice to hear from someone that have tried both setups!

Motor is pretty tuned now and I guess loosing low down grunt doesn't help either - i stick with 4.1

Just stay clear of the highways and go fast on the B roads


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Old 20-12-2016, 10:06 PM   #4
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You can go for 3.78:1 which will be good for both.
I have been in 4.1:1 in the mini, also I have been in mk1 Gti I used own.

I think bulk ring and all that is same for mk1 and mk2.

Cheers
Atchi
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Old 21-12-2016, 10:46 AM   #5
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Done a couple of track days with 4.1, about perfect when you actually use 5th gear on the straight

From which model do you extract the 3.78 diff Atchi? As you say maybe it´s the golden middle way, i will do more miles on the street than on the track
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Old 21-12-2016, 10:48 AM   #6
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I've run 4.1 and 3.5.

Mine is used on the road, so I find the 3.5 easier to live with. On a road car with 10's I found the 4.1 made 1st gear almost redundant.

This debate has been run before and the consensus seems to be if you are going to use it on trackdays then the 4.1 works very well.
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Old 22-12-2016, 11:59 AM   #7
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I will check which model it is from for you.
I have a feeling it is from 5 door G13A model but I will check for sure.

Cheers
Atchi
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Old 22-12-2016, 10:23 PM   #8
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Hi,

I have checked it now and it is from AA53A so it is for G13A 5Dr mk1 Swift has them in.
If you can find them, you can fit these in and will work better for your car.
I myself has this ratio for my Mini with 13".

Cheers
Atchi
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Old 22-12-2016, 10:56 PM   #9
Marcus Nordblom
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Quote:
Originally Posted by miniswift View Post
Hi,

I have checked it now and it is from AA53A so it is for G13A 5Dr mk1 Swift has them in.
If you can find them, you can fit these in and will work better for your car.
I myself has this ratio for my Mini with 13".

Cheers
Atchi


Thanks Atchi, i will try finding oneold Suzuki parts is cheap as chips have found a couple of boxes £40 a piece



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Old 23-12-2016, 10:35 AM   #10
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not many in UK, so I might ask you the get me a set!
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Old 23-12-2016, 10:48 AM   #11
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I keep my eyes open
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