[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

RE: 5kTQW Vs 5KTS + 4KQs & ur-q diff ratios




>I've had 2 wagons now.  One "pulled" much better than the other.  I've
>heard that some wagons had 4.11 final drives.  If someone knows where to
>check and what the 4.11 transmission code is, I can check on both wagons
>and update the q-list.

I don't trust codes. Do this:

1) lock the rear diff

2) raise car off ground

3) mark inside of one rear tire at point closest to the ground or where you have a good reference point

4) mark propshaft and rotate propshaft by hand and count the number of rotations of the 
    propshaft for one complete rotation of the marked rear wheel, number of propshaft 
    rotations for one complete rotation of marked wheel is value X

5) final drive ratio is X:1

3.90:1 or 4.11:1 are typical examples. Datapoints: the 84 4KQ is about 4.11:1
and the 85-87 4KQ is about 3.90:1 . This and the lighter weight of the 84 4KQ
makes the 84 4KQ the best choice for road race, rally or auto-x use. Many
Pro-Rally ur-q racers seek out the 84 4KQ 4.11:1 trans and diffs to replace
the higher ratio, (lower value of X) 3.90:1 diffs, I think, in the stock US-spec ur-qs. 
Acceleration and not top-end is king in Pro-Rally, road race and auto-x.

-glen