http://www.mini2.com/forum/faq.php?f...ansmission_faq

And the T-1 design still works great on tarmac; it is only less effective on dirt than a diff with preload clutches.

 

OK, one last stupid question, does the quaiffe/torsen/etc, change the final diff ratio. It looks like the Ford Focus SVT uses a difference final diff ratio than the MCS?

 

The ring gear is not a part of and attaches to the diff.

Also - mentioned on the Focus Forum that the SVT LSD might not be available until the new year.

Derek

 

read the SVT forum posts - I think there might be a GB in the making...

 

It's the transmission case that needs a little work. The side opposite of the ring gear on the Quaife is just a little larger than the stock diff and touches the case. A couple passes with a carbide bur fixes the issue. I bet you could install it without doing anything and it would self clearance but that's not the right way to do it!

 

I am tying to buy this torsen LSD from Ford racing, but they keep saying it is not yet available here in canada. Can you tell me where you got yours?

Thanks
Frederick

 

I can't but you might want to try these guys: http://www.tsr-performance.com/

After that I would try Autotech Sport Tuning AKA Quaife America.

 

Frederick:

Check out the SVT Forum: www.focaljet.com/ubbthreads/showflat.php/Cat/0/Number/2417155703/page/0/fpart/1/vc/1

It's new and I don't think it's available until early next year.

Derek

 

Here's an interesting quote from the Grassroots Motorsports MCS project car archives linking Mini and Ford to the same LSD: "Right now, there is only a handful of these Torsens made. They are all being used for testing and are not available for purchase. Torsen is shopping the piece to MINI aftermarket distributors and Ford for production. Please do not contact Torsen about this piece. It is not for sale." This was in 2004. The whole article is here: http://www.grassrootsmotorsports.com...nicoopers.html

 

OK Here is my question, I've been asking around since Sept, what is our final diff ratio? and please don't give me the same answer with the overall ratio including the transmission and tire size, I only want to know the final drive ratio nothing more.

 

There are two final drive gears, I believe, each with a different ratio. Is that what you are asking? I looked into changing out my final drive for better acceleration, but there are two, and there aren't any stock MCs or MCSs with different gears to choose from that might fit, so...

ALTHOUGH! Maybe the Ford gearbox, which probably has two final drive gears, has a different set! OOOOOH. I am gonna christen this: Operation Final Drive [aka Project Focusify]. Time to create another thread... ! Linkz0r: https://www.northamericanmotoring.co...969#post740969

 

ahHA - I thought I had read something like this before - I just couldn't remember when... Here's to waiting until Ford releases the Torsen to see what's what. Derek

 

I have a stock 05 MCS, what I've been trying to find is what is the ratio of the final drive, as for example, is it 3:73, 3:90, 4:10, 3:71, 2:73, what is it, anybody know?

 

So there is no "it", and you'll never get an answer like the one you're expecting.

Matt

 

Matt, why isn't there a "it" for the 6 speed? Check the "it" for the automatic:

So far I finally found one spec done the way I'm used to but it had to be for the Automatic:
AISIN Automatic
Gear ratio 1st / 2nd / 3rd
4,044 / 2,371 / 1,556
Gear ratio 4th / 5th / 6th
1,159 / 0,852 / 0,672
Reverse gear ratio
3,193
Final drive ratio
3.683

3.683 for the Automatic but nobody on earth knows what "it" is for the 6 speed? why is that???

 

From my current thread, Operation Final Drive, here is your answer:

For those curious on the theory of the final drive, here's a good excerpt, from Sport Compact Car Web, on the Focus gearbox:

"The new Getrag box is a curious piece. Look closely at the gear ratios listed in the spec box and you'll notice two different final drive ratios. Confused? The Getrag box is what is known as a dual layshaft design. Normally, you would have an input shaft with six gears on it meshing with an output shaft that also has six gears on it. This would make a very long transmission, however, and besides the packaging constraints, long shafts tend to be weaker than short ones. In the Getrag box, there are only four gears on the input shaft and there are two different output shafts. Second and third gear, for example, might share the same gear on the input shaft, but second would be a larger gear on one side of the input gear, and third would be a smaller one on the other side of the same input gear. Both output shafts drive the differential through different final drive gears, resulting in a 2.88:1 final drive for first, second, fifth and sixth gear, and a 4.25:1 final drive for third, fourth, and reverse."

http://www.sportcompactcarweb.com/ro...6scc_focussvt/

We have the same transmission as the Ford Focus SVT and Audi TT, amongst other cars. Look through my thread on Drivetrain mods- I'm in the process of designing out the glitches in a swap of the two gears...

 

There are two "pinion" gears for the 6-speed. They're not really pinion gears due to the geometry, but they have different number of teeth. So depending on what is driving the ring gear, you get two different "final drive" ratios.

And what ingsoc said...

Matt

 

Might want to try these guys. I personally think their diffs are better than Quaife anyway.

http://www.peloquins.com/products.html

 

been there - any clue as to whether or not there is an LSD among those offered that'll fit the MCS? (i.e. is one for the TT?) Derek

 

I'm pretty sure it's the same as the 02M but not 100%

 

What do we know about the gear ratios on the SVT box? (compared to MCS)

 

They should be listed in my thread, "Operation Final Drive." I'm currently checking on sources for the parts necessary, and will be posting again when I have the necessary info for everyone.

One thing to note, since this will not be a Focus you're putting the gearbox in, there will probably need to be new mounts fashioned for the new 'box. Just something to keep in mind- the insides are apparently the same, but the mounts are different [so I hear].

 

So, it sounds as if the same LSD works in the Mini, the Focus SVT, and now someone mentioned the Audi TT. Does anyone know what an exhaustive listing of all the compatible tranny's (at least in terms of using the same LSD) would be? May produce some other options for us...
Just a thought.
MinMax

 

How many people would be interested in a ford racing/torsen diff???

I'm still trying to get a price an availability but one of my accounts is a large ford dealer and they can track down just about anything, once I know more I can I'll let everyone know so we can work on a group buy

 

I doubt anyone would be until someone buys one of them and installs it in a MINI without problems. So far, it doesn't sound like anyone has done that.