well i belive my ratios are off my rear tires want to turn faster than the fronts and it causes lurching when it switches grip from the front tires to the rear any time i touch anything that isnt mud or sand it starts that lurching. so should the gears match front and rear? how can i figure out what ratios i have?

 

[YOUTUBE]http://www.youtube.com/watch?v=QUO7fe74DdI[/YOUTUBE] at the 1:29 mark after i put it into 4wd you see the front wheels going at thier speed and the rears going much faster. compared to the first pass in 2wd which was smoother.

 

Yes, gear ratios and tire sizes should match front to rear. To find out what you have, see below:
- http://www.4crawler.com/4x4/4R_TechI...oDetermination

 

If you use 4WD on high traction surfaces you will get lurching when turning.

You would need need an extreme difference in ratios to notice a difference visually without a strobe light.

Something else is going on.

 

Get the truck off the ground, put tape on the wheels in the same place, put it in 4lo, have someone else watch and let it idle in 1st. See if which turns more front or rear...

 

im gonna try and film this later to show you guys and its not high traction its a dirt road..

 

Do as Lumpy says. If you have open diffs you can just jack one side up.

 

@ Marc & Lumpy: you're saying jack up the truck with wheels on the ground on one side, then put in a drive gear? i hope he doesn't have a locker he doesn't know about too!

 

No, I'd get them all off the ground...I would not chance it falling.
They should all spin the same amount if you do not have any resistance on them...am I thinking correctly?

 

you'll get lurching as the grip switches between tires. that's part of the consequence of open diffs. the wheels without traction WILL spin faster.

however, to determine what gears you have, FOLLOW THE INSTRUCTIONS 4CRAWLER posted and you'll know not only if they're the same, but exactly what they are, which is good information to have.

 

I know from fact that if you have manual hubs you will blow at least one side out if you are on good traction with different gear ratios. When I was 19 I bought my first Yota and didn't test the 4wd and when I got home but it in and about a 1/4 mile into the test I heard a noise and I was no longer had working 4wd. As for auto hubs I don't know but I would assume the stress would cause something in there to break

 

wow brain math overload!! lol i just read the article ok so will the one wheel method work with the front also? lol no no lockers lol.

 

yeah your xfer case will grenade >.>

 

Lumpy didn't say that.

I said to - if he has open diffs.

 

I have run 4.88's in front, and 4.3?'s in the rear of my 93... I only used 4x4 when I absolutely had to, but was able to go about 6 miles uphill in snow aeveral times, and didnt grenade my tranfer... it did make lots of clicking noises tho... but as I said...I was on a slick surface....

 

i was only kidding around, when my first thought was that if he was unsure about different gears in each axle, who knows what else is in his pumpkins; i didn't really check who said that.

 

I like what's in the pumpkins...it's gooey slimy and stick to your fingers like brain matter. Then you get to bake the seeds!!! :


.

 

 

i thought a good 4wd rule of thumb is to never use it on anything that isn't soft (pavement, dry OR wet, or even compacted dirt roads). instead, only use it on soft ground (like sand, mud, or snow).

 

i follow that rule as well.