Are the OEM posi traction/limited slips that came in the pre-95 v6 4runners any good? If they are I have a couple questions:

1.) would it still work decently with 40s? Or would the big meats eat it?
2.) currently have a 4 cyl third. Could I swap my gears and install that carrier into my 4cyl 3rd?

 

As far as I know, there was no factory LSD offered in the trucks or 4runner.

 

Huh? I was told it was an OEM limited slip that came from a v6 4runner with an 8" rear. Interesting

 

I was googling around last night and saw these on eBay

http://www.ebay.com/ulk/itm/151631134849

 

1.) It's most likely a Supra LSD. Since they never came stock in pre-96 trucks/4Runners.

2.) 40s would surely put the hurtin' on it. I can't imagine any LSD surviving 40s. But I don't have any experience to draw from there. So I'm just guessing really.

3.) Yes. Read here.

4.) Those look like Supra LSDs.

 

Thank you for the info sir.

 

The stock limited slips for supra and later 4rnr were a torsion design not a clutch design.

Had one installed in front axle when I bought it. I sold it in favor of a locker.

https://en.m.wikipedia.org/wiki/Torsen Don't know if it answer PO question. Guess really if it'll stand up to running 40's depends on your rig set up and your driving style.

 

Well I may just buy a spartan or an Aussie and just lock it. Heard good about both. Though we don't have many rocks to play on around here, I worry about the strain of locking the front. I'd read somewhere that locking the 4 cyl diff will actually make the carrier stronger. Any truth to that?

 

What does rocks have to do with it?? Full traction to tires benefits in all Offroad vrs open difs. If your running 40s and wheel by skinny pedal your prolly gonna break stuff. As for a locker strengthening a dif. IDK, never heard that one. But a proper gear set up makes a huge difference. Prolly wanna look at carrier locker like a Detroit. Or go ARB so best of both worlds. How built are your axles??

 

I was just referring to strain of rocks. Rock crawling and binding them up between rocks is quite a lot more strain than mud and dirt.

My front R&P is my weak link no doubt, but I'm not spending big money on a built d60 for my little stripped down trail truck. I'll trade for 38s if I go to ripping up front thirds.

The norm I guess on a front axle. Dirty 30s, ARP knuckle studs, standard low pinion 3rd, IFS hubs, Tacoma rotors and brakes, high steer, hydraulic assist

Rear is a welded Isuzu modified 12bolt (zero worries of breaking it)

 

I think the mud thing not breaking thinks is a misconception. This past summer I've seen 2 danas break. One a 35 TTB on 38's like seriously what was he thinking. And a 44 on 40's. All playing in mud. Perhaps in mud races with a groomed mud strip it's not a big deal. But otherwise I think it is better to be over axled and under motored. My rig makes it through the same holes as the big boys even pushing mud. But it slow and. Not very entertaining though.

 

I'm not doubting that mud will put a hurting on drivetrain. It's just my opinion that wedging tires between rocks, forcing steering against rocks and the shock load of bouncing a front end up and over rocks is worse.

I've seen 1/2 ton 90s model IFS Chevys bogging all day on 40s and never bust (still can't believe that). Had a friend with a moderately built K5 running trails and mud holes on 39.5 iroks and never bust the bone stock 10b up front (which amazes me). Knowing how worthless the 10b and the Chevy IFS is, it's hard for me to imagine my 40s on a rig half the weight, a 3rd the power and with a better axle can't do the same. I know what everybody says but I guess our trails and mud just aren't as severe

Either way. Knowing my front axle setup, do you think a good lunchbox locker would make any parts less reliable than it currently is now?

 

Think you'd be better off with a Detroit. But cost about twice as much. Give it a go. You know a hi-pinion is stronger going forwards. If the lunchbox grenades then you know.

 

Yeah but they don't make high pinion in a 4.30 ratio which is what I need to match the rear. I may just wait on ye old tax refund and buy a full Detroit

 

I need to refresh a dif so waiting for taxes too. I'm tired of mud though, gets everywhere.

 

I like mud but not so much in my yota. front end is tubed and narrowed and the rear is frame width steel bed that doesn't cover the rear tires...

 

I miss trails with a mix and hill climbs. Mountains vrs low lands and forgotten state roads.