Quattro help

[sergio]

Here it is. My English isn´t very good so decided to draw.
I have the gear box (2) which has a diff ratio of 37/10 and need to find a rear diff (1) also with the same ratio of 37/10.

It has been very difficult to find the rear diff (DRL). So i´m thinking that maybe i could use one that has a similar ratio. Could it be done? Would it work?
Thanks!

[RichLV]

Seems like so, but the drive distribution between axles is handled by the Torsen, and your distribution will differ from what the Torsen gives. Pretty hard to speculate until someone has actually tried it for a prolonged time.

[sergio]

For what i understand if the front and rear diff have different ratios the 2 front wheels will spin at a different ratio than the 2 rear wheels. Which will lead to a different distribution other than 50/50.
Am i wrong??

[RichLV]

Basically (as I understand it), the gearbox would spin your wheels at a different speed than diff is spinning the rear ones. Which would probably cause stress on the Torsen and kill it. A no-no in all cases.

[sergio]

That's what i thought! Yesterday a member from another forum told me he made the swap and didn't bother to match the centrar and rear diff ratio.... He said tha car worked fine..... He didn't knew that probably the new gearbox he instaled could have a different diff ratio.
Is it possible that it could work even if it's a different ratio???

[UrS4boy]

What would happen if the quattro gearbox ratio would´t match the rear differential ratio, if they were different?

Badda Bing. Badda BOOOOOOMMM!!

[sergio]

What would happen if the quattro gearbox ratio would´t match the rear differential ratio, if they were different?

[sergio]

bump, bump

[sergio]

Gearbox

I have a gearbox with the code HCG 28014 that has a ratio 37:10
What would happen if the rear differential had a different ratio, other than 37:10?
Would it still work?
Thanks!

[sergio]

You asked all this on motorgeek and got quite a response with information in your thread.

Yes i know, but i like to listen to different opines/sugestions that´s why i use different forums.

[david1980]

You asked all this on motorgeek and got quite a response with information in your thread.

[vag_nutter]

Found a A4 B5 quattro for parts.
I was thinking….using the quattro system and a PD engine (Tdi) what gear box could i use to fit both the quattro system and the engine?

any 01a (5speed) or 01e (6speed) quattro gearbox. you will want a tdi ratio one.

Sent from my GT-N7100 using Tapatalk

[sergio]

Found a A4 B5 quattro for parts.
I was thinking….using the quattro system and a PD engine (Tdi) what gear box could i use to fit both the quattro system and the engine?

[sergio]

Change of plans.
I think i´d better try to source an 80 avant quattro for spares to swap all the quattro components to mine. I´m sure it will be plug and play
As for the engine and gearbox, will also try to source a 130 PD engine with 6 gearbox, which is easy to come by.
But that raises another question: does the 6 gearbox adapt to the quattro linkage system???
Once again need your help!
Thanks.

[sergio]

Another question.
The rear diff, subframe, struts, wishbones.... of an RS2 are the same as on a b4 avant quattro?
Thanks