Hello guys.
I have a Toyota 4Runner 3.0 v6 1989 with a differential number G254 which is open diff and I am looking to instal LSD.

I came across one from 3.0 diesel 1993 with number G285 which is a LSD.

I know all other options with airlock types.
but I am looking for something more budget friendly.

the question is : do you think it’s gonna fit ?
if no what number diff I can use ?

Thanks

 

Welcome to Yotatech. If you're looking for a factory lsd, the one from that 93 should work, but you'll need to make sure the gear ratio is the same as yours or plan to swap the front differential too or swap the ring and pinion to the lsd carrier. Plus after 29 years of use, the factory lsd is probably pretty worn.

There are many options for locking and limited slip diffs. Air, electric, "lunch box" automatic lockers that only replace the internal components but utilize your existing ring and pinion.

Lots of options and many others with much more knowledge and experience than I have.

 

I will throw out my experience on a budget lunchbox locker, I had a grizzly locker for 11 years and I hated every minute of it, the bucking, noises, clanking noises etc that come with it drove me nuts.

It finally went south recently and trashed my gears in the process, decided to get an Eaton e-locker, oh boy is it better, but not better as far as when locked it’s better for when it’s not locked

I would never go back to a lunchbox locker, EVER. If the LSD doesn’t work out try to come up with the extra loot for an ARB or an E-locker….just my opinion, it’s worth the extra cash

 

I went with the TruTrac LSD/posi for my 2WD open diff to give me a fighting chance in the Wisconsin snow and it is doing a decent job of keeping the truck going straight on snow covered surfaces..

Yeah, I was looking for a 4WD pickup but all were out of my budget at the time and this very decent Texas truck became available from a friend of mine.

While you are doing the differential swap, I highly recommend doing the axle bearings if they are original and high mileage. This will make it a "touch it once" event and the rear axle will be set to deliver a long service life without having to dive back into it when the bearings and seals fail and you start to get diff fluid all over your rear tires and wheels and the rear brake shoes cease to be brakes.

I am fortunate to have the budget to do a complete refresh of all the old components when I did the rear axle bearings: brake drum, brake cylinder, brake shoes, shoe hardware. I made the error when doing my LSD/posi of NOT doing the rear axle bearing project/refresh and I regretted it 8,000 miles or so later when my diff fluid began pouring out onto the rear wheels. .

Mike