884runner gear ratio?

[Fruitchew]

My 1988 4runner front diff (the one i blew up) as it says is a 4:10 ratio Code of G292 (G= 8" Ring, 29= 4:10, 2= 2 Pinion)
My 4runner is a V6. Well i went and bought a used front diff to replace it, i looked for the same code on the same year 4runner at picknpull and found a diff code of G292, BUT it was out of a 22re 4runner and the diff also had an air lock mechanism on it- i assumed its the same diff being its the same code.... I installed it on my 4runner and it binds, so i now know its NOT the same... now why the same code but different ratios?

[Tarzan]

The actuator most likely is ADD but that should not cause binding. I am assuming you tried the new diff and it is ok. Is it possible the rear diff is not original? Another possibility is maybe the diff really is a locker and is locked that would cause binding.

[Fruitchew]

hang on... my 4runner is a fully loaded Sr5 with stock 31" tires and everythings stock on it even the rear diff and the engine is a v6, i grabbed a front diff from a same model 4runner but 4cyl, both have same codes....im guessing the 4 cyl 4runner owner had changed both diffs which would explain why the code matches but the diff doesnt. And im also talking about IFS, and the mechanism is not a locker, its exactly the same as having manual locking hubs, it engages or disengages the cv axles.

would a G294 front diff work on mine? it would be a difference of 4 pinion instead of mine (2pinion) hence the 2 and 4 in G292, G294

[90 Runner]

Hey i have a stock front IFS diff out of a 86 pickup if you are interested. I can take a look at the codes if you are interested.

[rickashay]

Im in the middle of this same problem... If you have not owned the truck since new its impossible to tell really what the ratio is unless you pull apart the third (in the rear) and count the teeth or open up the carrier in the front and count those teeth. You never know what the previous owner did before you bought the truck, like you mentioned.

So i would personally ignore the codes. To get a real good idea however, you can do the following (assuming you DONT have a locker in either diff.): to check your rear gears and find the matching front you jack up one rear tire so it is free to spin. Mark the driveshaft with a spot of white-out or chalk. The make a mark on the tire thats in the air. rotate the tire around 2 full rotations and count how many times your mark on the driveshaft rotates around. If you have 4.88's in the rear you should have 2 tire rotations for 4.88 rotations on the driveshaft. for 4.56's you should have 2 tire rotations for 4.56 rotations of the driveshaft. etc etc. if your careful and set it up properly this can be a great indicator although it is still not 100% accurate. You can apply the same method to a front IFS diff. rotate the outer flanges 2 full rotations and count how many front half shaft rotations that would make....

hope that makes sense, and hope that helps!!

Cheers

[Fruitchew]

yah, i didnt buy the entire vehicle lol so i only wasted 50 dollars on the front diff. My father has a 92 pickup with the front diffs stock G294, and im going to grab the front diff and see if it works, if it doesnt-im going to take both front and rear diffs off it because they obviously match. G294 and G292 are pinion differences but same ratios. I already marked the driveshaft on my current setup and the front diff goes 1 quarter more turn than the rear diff.

[rickashay]

well there you have it... hahah im just about to drop my front diff and put in the correct 4.88's to match my rear end. My front is a 4.56... not not sure of the code. It'll be for sale soon if you know anyone who wants it haha

[Fruitchew]

my father actually has 4:56 gearing in his 92 pickup, so hes going to need a spare... how much you looking to sell it for? and where are you located? alberta? bc? Hes in BC

[rickashay]

I am located in Lethbridge, but I am originally from Nelson BC. I travel there frequently in the summer time so if hes around there I could deliver. I was thinking 200...

[marco88]

4cyl diffs have a smaller R&P than 6cyl diffs, they are not compatable so when your looking for parts they have to be from a 6cyl truck/4runner.

[Fruitchew]

really? i was born in nelson bc... he lives in thrums near castlegar. Have you heard of the last name ogenski?

[Fruitchew]

4cyl diffs have a smaller R&P than 6cyl diffs, they are not compatable so when your looking for parts they have to be from a 6cyl truck/4runner.

good to know, thanks for the info. but my question still....why is it the same code then? G292 when it should be F292 for its 7.5" ringgear code G is 8"

[Winch]

4cyl diffs have a smaller R&P than 6cyl diffs, they are not compatable so when your looking for parts they have to be from a 6cyl truck/4runner.

Hey Marco, 4 cyls actually do not necessarily have smaller R&P's. All Toyota pick-ups, 4Runners and Tacomas from 1979 - 2010 all have either an 8" R&P or an 8.4" R&P in the rear. And the 4 cyl trucks actually had a bigger R&P up front (8") than the V6 (7.5") and now they are back up to 8". The 4 cyl's all came with the 8", and the V6 has either an 8" or 8.4" diff depending whether they are locked or open. There are differences among the 8" diffs from year to year and model to model, so I agree that they are not necessarily interchangeable, and there are also some differences between the 8.4", but to say that the 4 cyls have a smaller R&P is not really accurate, because many V6's have the same size R&P. :)

Here's a bit more info: http://home.4x4wire.com/erik/diffs/#front

[Stuwy123]

Hey Marco, 4 cyls actually do not necessarily have smaller R&P's. All Toyota pick-ups, 4Runners and Tacomas from 1979 - 2010 all have either an 8" R&P or an 8.4" R&P in the rear. And the 4 cyl trucks actually had a bigger R&P up front (8") than the V6 (7.5") and now they are back up to 8". The 4 cyl's all came with the 8", and the V6 has either an 8" or 8.4" diff depending whether they are locked or open. There are differences among the 8" diffs from year to year and model to model, so I agree that they are not necessarily interchangeable, and there are also some differences between the 8.4", but to say that the 4 cyls have a smaller R&P is not really accurate, because many V6's have the same size R&P. :)

Here's a bit more info: http://home.4x4wire.com/erik/diffs/#front

Goodness that is confusing. You're mixing years, front diff types and everything. He's obviously got an 88 Non-ADD, IFS, front diff. Don't confuse the poor guy.

[874runnersr5]

dont forget 7.5" rears :)

[Winch]

Goodness that is confusing. You're mixing years, front diff types and everything. He's obviously got an 88 Non-ADD, IFS, front diff. Don't confuse the poor guy.

OK, sorry, maybe a bit confusing, but I thought that Marco would confuse the OP by saying that `4cyl diffs have a smaller R&P than 6cyl diffs` which is not true. In `88 they all had the same size R&P, regardless of engine size, right.

[freeze]

Like Gary says... same size but the bearing is what's bigger in the 6cyl

[874runnersr5]

isnt there a different bearing in the elocker to? :confused: