Outer Limits 4x4 Board

Hey Guys

I have a short Mitsu 98 with 3.5 V6 and 4.27 Diff Ratio.

I got a 4.88 front diff from a Short Mitsu 94 3.0 V6, but I found a Rear Diff from 2.8 TDI in 4.90....

My question is for the rear diff, it is the same 4.88 with 4.90 ???, because I saw in the Forum that:

3.5V6 & 2.8TDI :-
front axle = 28 spline, 29mm diameter, diff = 8" diameter (high pinion)
rear axle = 31 spline, 33.5mm diameter, diff = 9.5" diameter

and

Gen 2

3.0 V6 = 4.625, 4.875
2.8D = 4.875
2.8TDI = 4.90

Please, If somebody could give me a hand with it .....

Thanks

Caxtrol

No they are not the same.

The 4.900 is the bigger one.

Dare I say it, if you had free wheeling hubs and never used super select on the highway then you'd not notice the 0.25 ratio difference.

Ok

I do not have free wheeling hubs and I used super select, because my Mitsu is year 98, and for this reason I am understanding that I can not use 4.875 in the fron and 4.90 in the rear, I am thinking in the correct way ????

Thanks

Caxtrol

The difference in ratios is .025, or a little over 0.5%. You'll get a bigger difference due to tyre wear & tyre rotation.

For example, if you have 33" tyres, 0.5% would be less than 0.2", or less than 5mm in diameter - which is 2.5mm in tread depth.

Just do it.

Ok, if I have 33` the diference is nothing, and I will not have a problem with 4.875 in the front and 4.90 in the rear ????

It is correct ???

Thanks again

Caxtrol

Scott was just using the tyre size as an example.

Just do it. The difference in ratios is small enough that it won't cause a problem.

Hekta wrote:Scott was just using the tyre size as an example.

Just do it. The difference in ratios is small enough that it won't cause a problem.

Yes. I was trying to show that it's less of a difference than new tyres on one axle, and part worn tyres on the other.