How do you figure out the gear ratio on a tracker/sidekick?? I have about 10 different front and rear members and each has a different amount of teeth on the gears. I know on a chevy you divide the smaller number into the larger thus getting the ratio. I don't think that works on these because the numbers aren't coming out right. Can anyone help?

One way is to mark the gear and the pinion, then just count how many rotations it takes of the pinion to have one full rotation of the main gear.  Then compare it to the known gear sets that came in the Zuki's.

I know on a chevy you divide the smaller number into the larger thus getting the ratio. I don't think that works on these because the numbers aren't coming out right. Can anyone help?

That's all there is to it.

Ring Pinion Ratio

43/ 10: 4.3

37/ 8 : 4.625

39/ 8 : 4.785

41/ 8 : 5.125

43/ 8 : 5.38

45/ 8 : 5.62

35/ 6 : 5.83