Can I run different gears front and rear? Like 4.88 in the rear and the stock 4.10? Oh, this is on a 1986 4 Runner.

you can...... But before you do ask yourself this...Do i realy want to :nuke: eather one of my driveshafts, thirds members, trans , transfer case, or even all of them at once??? Couse thats what will happen if you run mismatched gears and use 4wheel drive....uless you offset tire size to match......

not if you want to wheel or use 4wd

You can do it if you run a 16% smaller tire in the front like 225/70r15 front and 33's rear. :flipoff2:

Originally posted by stomper4x4
you can...... But before you do ask yourself this...Do i realy want to :nuke: eather one of my driveshafts, thirds members, trans , transfer case, or even all of them at once??? Couse thats what will happen if you run mismatched gears and use 4wheel drive....uless you offset tire size to match......

ditto.:rolleyes:

i run 5.29s in the rear and 5.38s in the front with no problems. There are a few others on the board that are doin this. the difference is very small only 1.001%also i only run this cuz it is the closest i can get.

Drew

unequal gears will cause the T-case to bind.

i have a little bit of bind i just shift out every so often. ErikB has been running this set up for a while with no problems.

Drew

Originally posted by Pavement Pounder83
i run 5.29s in the rear and 5.38s in the front with no problems. There are a few others on the board that are doin this. the difference is very small only 1.001%also i only run this cuz it is the closest i can get.

Drew


Yes I have a buddy who has been running a setup similar to this and he has had no prob........but a 4.10 to 4.88=:nuke:

Sure, a 2% or less variance is not a big issue, but the original post was about almost a 20% variance in ratios. Without a change in the tire size, he will have a problem.

yeah i agree

Drew

I have a buddy that ran mismatched (4.10 front 5.29 rear) gears in his 88 4Runner for about a month and a half on the street and it did ok. He never had it in 4wd and only did it cuz he's a cheap ass and re-geared one diff at a time. I wouldn't reccomend you do this, but it did work. Save up and wait to re-gear 'till you can do it right, IMHO.

dammit drew, you're wrong.:flipoff2:


Don't drive with mismatched gears like Drew here. Its bad for your muffler bearings.:D

The 2% mismatch rule is more of a guidance, and is ment for the street. I honestly think you can run alot more without breakage. But it all comes down to the terrain, the traction, the weight of the vehicle etc. 20% however is no good idea.

Originally posted by Violent91
dammit drew, you're wrong.:flipoff2:


Don't drive with mismatched gears like Drew here. Its bad for your muffler bearings.:D

And the mismathced gears will cause a gyroscopic variance between the front and rear of the vehicle, and during turns the variance will cause harmonic cavitation in the multiplex convector which will result in leakage of the blinker fluid.:D

Multiplex convector? I thought it was a flux capacitor. :D

Well there ya go thinking again......

The flux capacitor modulates the rhythmic pattern of the flux voltage found on auto dimming headlights. ;)