new to limited slip questions

[iron_giant]

Hi guys,

Sorry for the basic newb questions but when it comes to my hj60 I am a newb. The axle code for my hj60 is K055. I've deciphered it but am wondering if that refers to both front and rear axles (ie. limited slip front and rear, rear only...) And... what about limited slip. I understand generally how it works, but don't know much about its real world performance. I am slowly building a rig that will go with me everywhere, and am wondering if I should consider replacing the limited slip with a selectable locker.

thanks for your patience,

David

 

[tlcruiserman]

Not sure but I thought that meant they were in the front and back. As for limited slip, I did not used to think much of them, until about 1 month ago, a guy went wheeling with us that had a 4runner and had put LSD's in front and rear and that truck did very well, not quite as good as lockers but damn close, so I would say the LSD's are the next best thing to lockers. Keep in mind they take different fluid than regular gear oil (at least the factory Toyota ones do).

Cheers,

Michael

 

[crushers]

to have liomited slip in the rear then you will need to have a FF...
if you are upgrading then i would recommend moving the limited slip (if indeed you do have one) to the front and a locker to the rear. i DO NOT recommend putting a locker int eh front unless you wish to get down and dirty often. a locker has a habit of eating the birfields even under low throttle applications. a limited slip will give before the birfield does...
just my opinion and i am sure there wilol be those that disagree...
cheers

 

[iron_giant]

I do have a FF rear, and the axle code states that there is indeed limited slip. That is exactly what I'm wondering... is the limited slip front and rear, rear only, or front only. The hj60 is 1984 RHD japanese spec.

Thanks for the input

david

 

[woody]

"go with me everywhere" is pretty open....

I've run a front limited slip and a rear locker and there are situations where it sucked...question is, do you forsee this rig needing to climb 24"+ rocks? Most don't....and the limited slip will keep things lasting longer and cover most of your wheelin needs.

To test: get one axle completely off the ground....chock the tires on the other axle....lock hubs if on front...t-case in neutral....spin the tires. If both spin the same direction, then it's limited...if they turn opposite, then it's open. repeat with the other axle.

Floor jack, 2 quality jack stands, 30 minutes total time including beer breaks.

 

[iron_giant]

"go with me everywhere" is pretty open....

I've run a front limited slip and a rear locker and there are situations where it sucked...question is, do you forsee this rig needing to climb 24"+ rocks? Most don't....and the limited slip will keep things lasting longer and cover most of your wheelin needs.

To test: get one axle completely off the ground....chock the tires on the other axle....lock hubs if on front...t-case in neutral....spin the tires. If both spin the same direction, then it's limited...if they turn opposite, then it's open. repeat with the other axle.

Floor jack, 2 quality jack stands, 30 minutes total time including beer breaks.

Thanks Woody! Going over 24" rocks may definately be part of the rigs future- Not a pure breed dedicated rock-crawler but definately capable if need be. I am away from my garage all week and was trying to figure it out based on axle codes. I am leaning toward a rear locker and front limited-slip. Do you mind elaborating on some of those situations where the limited slip "sucked"- it might help my understanding. Thanks guys- I do appreciate it.

 

[crushers]

you can also shim the limited slip to make it work better but at the same time still preserving the birfields.
the FF will be rear only...

 

[roscoFJ73]

Thanks Woody! Going over 24" rocks may definately be part of the rigs future- Not a pure breed dedicated rock-crawler but definately capable if need be. I am away from my garage all week and was trying to figure it out based on axle codes. I am leaning toward a rear locker and front limited-slip. Do you mind elaborating on some of those situations where the limited slip "sucked"- it might help my understanding. Thanks guys- I do appreciate it.

The LSD is only fitted to the rear.I read somewhere the factory LSD only sends a 14% bias to the left wheel.
If I crossaxle mine so all the weight is on the left hand rear wheel,it will not push the vehicle forward.

 

[crushers]

you can also practice the "riding the brake" method of getting the lifted tire to stop spinning and sending power to the wheel that has traction...

 

[beanz2]

David, it has a 3.70 factory LSD in the rear. Like roscoFJ73 said, the LSD is fitted to the rear only.

Dave

 

[crushers]

really? i thought the 60 series from Japan were 4.11, i thought that only Canada and the US got the shaft...

 

[iron_giant]

according to the axle code DAve is right, it is 3.70.

CAll you soon Dave!!

 

[roscoFJ73]

really? i thought the 60 series from Japan were 4.11, i thought that only Canada and the US got the shaft...

I think earlier versions in OZ were 3.70.
Probably changed to 4.11 with the 5sp

 

[iron_giant]

I think earlier versions in OZ were 3.70.
Probably changed to 4.11 with the 5sp

mine's 3.70 with the 5 speed. huh.

 

[woody]

Thanks Woody! Going over 24" rocks may definately be part of the rigs future- Not a pure breed dedicated rock-crawler but definately capable if need be. I am away from my garage all week and was trying to figure it out based on axle codes. I am leaning toward a rear locker and front limited-slip. Do you mind elaborating on some of those situations where the limited slip "sucked"- it might help my understanding. Thanks guys- I do appreciate it.

IMO, the limited slip is best for the non-dedicated crawlers, but really, the selectable ARB outta be on your long-term list. Swap the LS to the front for now, shim it a bit tighter than stock, do the rear up right, then do the front later if you find the LS doesn't cut it. Remember, a front locker should be done in conjunction with upgraded axle parts, $700ish on top of a locker. (Longfield birfs and inner combo)

When the rear has poor traction, and you really need one corner of the front to pull you up something, the LS will suck....the brake trick can help, but it's still a bias system. Not sure on the Cruiser LS's, but generally speaking the LS will lock up tighter with more power applied....which can lead to more issues too.

You will like the LS more if you have a flexy suspension, since your odds of having a tire on the ground better. Get one tire in the air with the LS and they are (IMO) thoroughly useless.

 

[HZJ60 Guy]

IMO, the limited slip is best for the non-dedicated crawlers, but really, the selectable ARB outta be on your long-term list. Swap the LS to the front for now, shim it a bit tighter than stock, do the rear up right, then do the front later if you find the LS doesn't cut it. Remember, a front locker should be done in conjunction with upgraded axle parts, $700ish on top of a locker. (Longfield birfs and inner combo)

When the rear has poor traction, and you really need one corner of the front to pull you up something, the LS will suck....the brake trick can help, but it's still a bias system. Not sure on the Cruiser LS's, but generally speaking the LS will lock up tighter with more power applied....which can lead to more issues too.

You will like the LS more if you have a flexy suspension, since your odds of having a tire on the ground better. Get one tire in the air with the LS and they are (IMO) thoroughly useless.

Very good information to be sure.

ARB-ness is next to Godly-ness.


TB