1.6 Gearbox With 4.41 Final Drive

[Spiky 37]

what sort fo speeds will i get in each gear with the above config, with a 7500 limit

[Sandy 191]

On 195/50/15s (max speed/rpm after change from previous gear)

1st 34.6mph

2nd 60.7mph/4267rpm

3rd 84.1mph/5420rpm

4th 106.9mph/5895rpm

5th 132.2/6069rpm

 

 

Personally I think the 1.9/4.4 combo is better for the closer 1st to 2nd gear:

1st 39.1mph

2nd 61.8mph/4752rpm

3rd 84.1mph/5514rpm

4th 106.9mph/5895rpm

5th 132.2/6069rpm

 

But for general road track use, the Mi16 box as it comes is my favourite:

1st 39.1mph

2nd 61.8mph/4752rpm

3rd 89.1mph/5189rpm

4th 118.8mph/5625rpm

5th 152.1/5859rpm

[Spiky 37]

hi sandy,

 

thanks for the detailed reply,

 

so basically only 1st and 2nd gear is the difference between the 1.6 and 1.9????

 

mmmm as my car is a track car, thats no benfit at all for me....

 

and as you say it might be better keeping the 1.9

 

if i bought a 1.6 box for 4.41 final drive, can i fit that into the 1.9 easy???? (read give to someone who knows what they are doing)

 

 

thanks again

[SPGTi 2]

Spiky

 

I don't know whether I am reading your reply correct but I think you are getting a bit confused.

 

Sandy gave you the figures for a 1.6 box with 4.4CWP and a 1.9 box with 4.4 CWP. The 4.4 CWP is from the MI16 box.

 

Their is a link to a spread sheet that gives you all the info you need somewhere (I am sure someone will post it soon).

 

Steve

[Spiky 37]

yeah i think i read it right,

 

but i know for a 1.6 box with 4.41 drive and LSD fitted,

 

i have 1no 1.6 box and 2 1.9 box's in my garage, so can mix and match to get the best result

 

hope that clears that up

 

sorry for the confusion

[Anulfo 22]

Wow bizarre!!! 4th gear 118.8mph and 5th gear 152.1mph!!!!Thats some drop in revs surely????

[Sandy 191]

If you can do 118mph in 4th, you won't be using 5th on the track often, or for more than a moment.

 

In case there is any confusion here, the 1.6 box has a 4.06 final drive as standard and the 1.9 box has 3.68 final drive.

[Longfield 0]

I pilphered this from a website a couple of years ago so I cannot claim to be the author and i don't know which website it was off - cause of the time inbetween and I recognise that the max revs is 7250 and not your desired 7500 but... it might interest you.

 

Longfields.

 

Ratios and speeds for 205 gearboxes incl: GTi6 box

 

ratios

('box/FD) 1st 2nd 3rd 4th 5th 6th FD

1.6/1.6 3.31 1.88 1.36 1.07 0.87 0 4.06

1.6/1.9 3.31 1.88 1.36 1.07 0.87 0 3.69

1.6/mi16 3.31 1.88 1.36 1.07 0.87 0 4.43

1.9/1.6 2.92 1.85 1.36 1.07 0.87 0 4.06

1.9/1.9 2.92 1.85 1.36 1.07 0.87 0 3.69

1.9/mi16 2.92 1.85 1.36 1.07 0.87 0 4.43

mi16/1.6 2.92 1.85 1.28 0.97 0.76 0 4.06

mi16/1.9 2.92 1.85 1.28 0.97 0.76 0 3.69

mi16/mi16 2.92 1.85 1.28 0.97 0.76 0 4.43

gti6/gti6 2.92 1.87 1.41 1.15 0.95 0.80 4.05

custom* 2.92 1.85 1.36 0.97 0.76 0.80 4.43

 

*1.9 box with 4th, 5th from mi16, 6th from gti6 and mi16 final drive

 

mph/1000rpm tyre setup = 195 / 50 / 15

 

('box/FD) 1st 2nd 3rd 4th 5th 6th

1.6/1.6 5.0 8.8 12.2 15.5 19.1 0.0

1.6/1.9 5.5 9.7 13.4 17.1 21.0 0.0

1.6/mi16 4.6 8.1 11.2 14.2 17.5 0.0

1.9/1.6 5.7 9.0 12.2 15.5 19.1 0.0

1.9/1.9 6.3 9.9 13.4 17.1 21.0 0.0

1.9/mi16 5.2 8.2 11.2 14.2 17.5 0.0

mi16/1.6 5.7 9.0 13.0 17.1 21.9 0.0

mi16/1.9 6.3 9.9 14.3 18.8 24.1 0.0

mi16/mi16 5.2 8.2 11.9 15.7 20.0 0.0

gti6/gti6 5.7 8.9 11.8 14.5 17.5 21.0

custom 5.2 8.2 11.2 15.7 20.0 19.2

 

mph@7250 rpm

('box/FD) 1st 2nd 3rd 4th 5th 6th

1.6/1.6 36 64 89 113 138 0

1.6/1.9 40 71 97 124 152 0

1.6/mi16 33 59 81 103 127 0

1.9/1.6 41 65 89 113 138 0

1.9/1.9 45 72 97 124 152 0

1.9/mi16 38 60 81 103 127 0

mi16/1.6 41 65 94 124 159 0

mi16/1.9 45 72 104 137 174 0

mi16/mi16 38 60 86 114 145 0

gti6/gti6 41 65 85 105 127 152

custom 38 60 81 114 145 139

Edited October 29, 2007 by Longfield

[Matt Holley 11]

Spiky, I use an mi box with my gti6 and it is a huge improvment on the 1.9 box, I would recomend it

 

I would be interested to see how the 1.9/4.4 combo compares as I nearly did this but an mi box came up with an atb diff already fitted

[Spiky 37]

so matt, what ya thoughts on 1.6/4.41 combo???

[welshpug 1,661]

On 195/50/15s (max speed/rpm after change from previous gear)

 

But for general road track use, the Mi16 box as it comes is my favourite:

1st 39.1mph

2nd 61.8mph/4752rpm

3rd 89.1mph/5189rpm

4th 118.8mph/5625rpm

5th 152.1/5859rpm

 

 

oh my word, they are interesting to see as this is essentially the combo in my ZX and it should have 55's on it!

[Matt Holley 11]

so matt, what ya thoughts on 1.6/4.41 combo???

 

Looks o.k to me, the 1st gear is a tad short but how often are you going to be using that on track.

 

If you have the bits already and dont mind it screaming a bit more on the motorway then go for it

[Dj_mini 7]

Iv got 1.6 box with an mi 4.4 and i can nearly touch the limter (8000rpm) in 5th at combe so for the little time iv diven the car iv found it very good but for future use possibly hill climbing im going to fit the 1.9 1st as the drop in revs between gear changes is better.

[Spiky 37]

sorry to bring this back up, i've just entered some details into a spread sheet

 

1.6 box

1.6 box with 4.41

1.9 box

 

so looking at that, i will max out 5th at 130 or 140 depending what FD i use with a 1.6 box

 

i currently have fitted a 1.6 box with std FD with quaife,

my next questions, how hard to swap the FD over for a 4.41?

 

[SPGTi 2]

You need to change the FD and the pinion.

 

Here is a guide

 

CWP change

 

Steve

[Spiky 37]

thanks for that, much appreciated

 

though been chatting with a mate and i think a 1.6 bx with mi FD may drasticaly reduce my top speed and find myslef flat out in 5th on track

 

so will see how i get on, and if i feel i need to change it i will.

 

will see what speeds i can pull at bedford in a few weeks

[Spiky 37]

just looked at that link

 

WOW, great detail, but dont look easy..lol well not "that" hard but, but i may not take that on

[James_R 3]

There's not too many tracks you'll find yourself flat out on with 130-135 up your sleave, and then you have to conisider do you gain time by running out of gearing for a couple of seconds and not getting a couple more mph peak, and then gain better accelerations over the rest of the track, to improve your area under the curve and a faster lap time.

 

Although on trackdays it's pretty subjective. But I doubt you'd run out of gears at llandow with that.

 

I'm swapping to a 4.4 this year as I'm finding the 1.9/1.6 combo too long for UK circuits, although it's spot on for the ring.

[Spiky 37]

ok cool,#

think i'll just keep the 1.6 box for now and see how it goes, bedford will be a good test and i can also see what the new gear ratios will be like

[James_R 3]

you will run out of gearing there, the main straight is so the porsches and things can take off

[Spiky 37]

well there ius a few porka's going so should be fun

[Garry 1]

So what box are you running, Spiky? 1.6 with mi FD?

[Spiky 37]

no,

 

1.6 box with 1.6 FD

[snillet 1]

I had a box from a BX16TZI "laying around" that i did put together with the Ethanol engine i have in my car.

 

The rations is as follows:

 

1: 3.454

2: 1.85

3: 1.28

4: 0.9696

5: 0.757

 

FD: 4.188

 

In reality same as Mi16 box but with larger span between 1-2 and a less revvier FD.

 

I can see when driving that starting from standstill the difference between 1-2 is a bit to big, but 1:st gear is really nice when sitting in traffic jams and you can just let the car tick slowly forward on idlespeed in 1:st gear, so i think it´s a keeper for me right now anyways since it´s both daily driver and trackcar.

 

I DO however really like the combo of the rest of the gears and the FD, have drive 205:s and 309:s with the Mi16 box before and as a daily driver that is just a "tad" to revvy at motorway speeds.

[petert 588]

Mi16x4's also had the 3.454:1 1st gear. It's unbearably short when coupled with a 4.43:1 diff, giving a huge gap between 1st and 2nd.

 

Your overall 1st is 14.46 (3.454 x 4.188)

 

Mi16x4 overall 1st is 15.3 (3.454 x 4.43)

 

Mi16 overall 1st is 12.9 (2.92 x 4.43)

 

My son runs a 3.25:1 1st in his Mi16. The 1st to 2nd gap is fine with the 4.43 diff.

Edited January 18, 2008 by petert