Lokka Diff Locks

Submitted: Tuesday, Feb 01, 2005 at 11:44
ThreadID: 20007 Views:7124 Replies:13 FollowUps:11
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Any info, good or bad on these would be appreciated. I was considering putting them in the front of the challenger. I know the ARB Air lockers are better but I don't have the cash. So anyway any info on how they work and weather you have to use manual locking hubs for them or not.

Thanks guys

Richard
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Reply By: Member - Matt Mu (Perth-WA) - Tuesday, Feb 01, 2005 at 11:58

Tuesday, Feb 01, 2005 at 11:58
Guys if you go here...
link text

4WD Systems will explain the complete operation etc for you. They are very effective as a lokka and the advantage of an auto locker is that they require no human intervention.

They do work with auto locking hubs, but in serious 4wdriving auto hubs can be a dangerous with or without a locker. The lokka will double your ablility, its sometimes a little scary how much further your vehicle will go with one installed. But do remember that if your hubs are locked on or off road it will increase your turning circle and steering effort, despite the manufacturers claims!

Still fantastic if you cant afford or justify an airlocker!

Matt.
AnswerID: 96027

Follow Up By: Member - Jeff M (WA) - Tuesday, Feb 01, 2005 at 14:42

Tuesday, Feb 01, 2005 at 14:42
Mat, I'm interested to here why Auto Hubs are dangerous without a locker in serious 4wding?
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FollowupID: 354821

Follow Up By: Member - Matt Mu (Perth-WA) - Tuesday, Feb 01, 2005 at 16:23

Tuesday, Feb 01, 2005 at 16:23
Cmon Jeff are you serious??

Unless they are the GQ Nissan type (unsure if there are others) that have the option of locking in positively then they can and do occasionally let go. If you were relying on this grip, it can be potentially dangerous!
You can go from 4 wheel grip to one (depending on your rear) in a split second!!
I dont doubt there will be many who have NEVER had a problem, but there are MANY that have!! In the IsuzuClub alone nearly every member who can scrounge a set of man lockers thows them on for that reason. Its cheap insurance for a potential threat!

Hey but if you like them, then go for it, to each their own and no arguements here on your choice!

Matt.

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Follow Up By: Member - Jeff M (WA) - Tuesday, Feb 01, 2005 at 17:46

Tuesday, Feb 01, 2005 at 17:46
Mine are electronically/vacume actuated so I guess that would not be a problem, I had never heard of such a problem. I guess that would only be applicable to the older style auto hubs like what was used in the early jackaroos and pajeros and such.

Now days most automatic hubs are locked in my electronic or numatic style setups and once in are in, either that or their full time 4wd setups where its a non issue anyway...
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Follow Up By: Member - Matt Mu (Perth-WA) - Wednesday, Feb 02, 2005 at 00:20

Wednesday, Feb 02, 2005 at 00:20
Ahh yes I remember the Surfs now, you have an actuator on the top of your diff. But does that mean your axles turn all the time with the wheels and the 'locking' is just bringing the front propshaft into play with the front diff?

Have you ever looked into it?

The auto locking hubs I was talking about are the assain, warn etc etc ones that simply lock the axles to the wheel hubs. I dont think you would have any probs with hubs but I also recall (somewhere in the grey matter muck) that there is a reason you dont fit lokkas to Surfs!!

Cos your axles dont unlock, if you were to fit a lokka, on road you would always get the increased turning cirlce and steering effort!! You cant simply unlock your axles to eliminate the lokka on road. Similar reasons for not fitting lokkas to the front of constant 4wds and shift on-the-fly Pajeros Jackaroos etc. Im not 100% certain, again been awhile since I looked at a surf but I think I am on the mark. Not that I intended to be, but you reminded me when you asked about auto locking hubs!

Matt.

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FollowupID: 354945

Follow Up By: Member - Jeff M (WA) - Wednesday, Feb 02, 2005 at 11:53

Wednesday, Feb 02, 2005 at 11:53
Yes Mat you are correct, the 4wd Computer activates a vacum actuator that enages the prop shaft. Fronterers I know have electronic locking hubs though.
I've been told by the boys at Opposite Lock that a front detroit locker works fine in the 4 runner/surf but had my doubts as you have mentioned. That's why an ARB locker would be my only "real" option IMO.
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FollowupID: 355012

Reply By: Member - Jiarna (SA) - Tuesday, Feb 01, 2005 at 13:22

Tuesday, Feb 01, 2005 at 13:22
Are you sure you want to put it in the front? Front lockers may contribute to understeer on hard loose surfaces such as gravel roads, and there's no way to turn off Lokkas. I'd put the Lokka in the rear, and if you really need a locker in the front, go for something you can disengage like an Air Locker.
Just my opinion - I don't have either type yet.
John
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AnswerID: 96038

Reply By: Member - B3 (NSW) - Tuesday, Feb 01, 2005 at 13:35

Tuesday, Feb 01, 2005 at 13:35
When I researched this a couple of years back I found a lot of diff specialists wouldn't touch "Lokkas" saying that they were a cheap n nasty copy of the "Lock Rite" diff locks. They look exactly the same, so not sure. Anyhow I went with the Lock Rite brand and have it in the front. It does make steering a bit harder at times but with part time 4WD I just leave my front hubs engaged when off road and engage/disengage 4WD as needed. ARB air locker in rear. Works for me.
AnswerID: 96039

Reply By: Truckster (Vic) - Tuesday, Feb 01, 2005 at 14:09

Tuesday, Feb 01, 2005 at 14:09
Save up and get the air locker for front.

Auto lockers in the front can be a nightmare. Have a search of this site, its been asked 2309823049230923809234098 times..
AnswerID: 96042

Reply By: Member - Chris (SA) - Tuesday, Feb 01, 2005 at 14:21

Tuesday, Feb 01, 2005 at 14:21
Despite the gloom and doom from truckster and others, the lokka brand has worked fine in my troopy, in the front, for two years. It hasn't affected my on-road turning circle, driving capability or any work I do with my hubs unlocked. As I have a definite change in turning circle when off-road with the hubs locked, I would recommend not using them in the front with full time or auto locking hubs as you might find the effects on steering somewhat confusing.

For those with manual hubs, they work fine, for all those with cash and auto locked hubs with air lockers, good on yer but don't rubbish a good product because you have something different.
AnswerID: 96043

Follow Up By: Coops (Ex-Pilbara) - Wednesday, Feb 02, 2005 at 01:17

Wednesday, Feb 02, 2005 at 01:17
5 years now for me and no problems in my 80 series (manual hubs).
She climbs up walls if I ask her too
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FollowupID: 354948

Reply By: Eric from Cape York Connections - Tuesday, Feb 01, 2005 at 15:35

Tuesday, Feb 01, 2005 at 15:35
Put a detriot in and as for the arb are better depends who you talk to.
I have a detriot in the rear of my 60 and love it they take a little to get used to driving but I find them ok.

all the best
Eric
AnswerID: 96056

Reply By: warthog - Tuesday, Feb 01, 2005 at 16:24

Tuesday, Feb 01, 2005 at 16:24
Have one fitted to the front of my GU. Makes it a bit harder to get out of 4wd, bit of reversing etc needed, other than that no problem. Steering has an increased return to centre effect, but not a prob even on rocky stuff with standard power steering, would have been a bastard in the old FJ45 perhaps (steering like an old bedford) but not the GU.
AnswerID: 96070

Reply By: davidta - Tuesday, Feb 01, 2005 at 16:56

Tuesday, Feb 01, 2005 at 16:56
Hi
I have Detroit Lockers Front & Rear on my GU. Work on similar principal to Lokka & Lokrite. They do have an effect on how you drive & steering, but it's easy to get used to.
I love having them - don't need to use the winch anywhere near as much, or spin tyres trying to get traction.
Cheers
David
AnswerID: 96075

Reply By: Pembo - Tuesday, Feb 01, 2005 at 18:22

Tuesday, Feb 01, 2005 at 18:22
Sorry to stray off a bit off the topic here, but has anybody had any experience with fitting these lockers? the website makes it all seem very easy but im not 100% sure,i have pulled the rear diff out many times but have never taken out the front one,i remember reading here that when you take your front axles out your hubs have to be either locked or unlocked (cant remember which now) or else springs and pieces will all come out. apart from that if i was to remove the diff and drop it a a diff specialist roughly how long would it take them to put it all together?
thanks agin
rob
AnswerID: 96091

Follow Up By: Bonz (Vic) - Tuesday, Feb 01, 2005 at 19:06

Tuesday, Feb 01, 2005 at 19:06
I had the locals take the Lock-rite out of the front of the GQ and put it back in the the GU and it was very straight forward for someone who's done the diff thing before. They only difference was that they had to get the GU front shafts machined as they were square cut at the ends where the GQ ones were tapered.

Anyone who mucks with diffs needs to know how to "set" the diff. ot sure what it is but back home, Mack is the diff setting expert, everyone takes the completed job to him to Set.

These guys did the job in half a day (in the GU) and 2 hrs to get the lockite out and slap in the old bits in the GQ.

Also, I dont think the hubs have to be either way to get the axles out, unless you have to wiggle the splines to get them out, in which case theyd have to be locked.
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Follow Up By: Member - B3 (NSW) - Tuesday, Feb 01, 2005 at 19:31

Tuesday, Feb 01, 2005 at 19:31
I installed mine myself in the front. All up about 4 hours - most of that was actually removing the diff centre from vehicle. The actual diff lock into the carrier assembly installation should take less than an hour.
As for the front hubs, if you have reasonable mechanical skills and a manual for your hubs it should be a doddle (assuming manual hubs - confess to knowing nothing about autos and full time!)
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FollowupID: 354876

Follow Up By: Member - B3 (NSW) - Tuesday, Feb 01, 2005 at 19:34

Tuesday, Feb 01, 2005 at 19:34
Forgot to mention the Lokrite installation manual has a procedure for installing and keeping your diff backlash the same, ie you don't need a diff expert if you follow instructions. That assumes your backlash is correct now, of course.
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FollowupID: 354879

Reply By: Bonz (Vic) - Tuesday, Feb 01, 2005 at 19:08

Tuesday, Feb 01, 2005 at 19:08
I have the LockRite locker in the front of my GU and its excellent, never had any trouble like above getting it out of 4WD, its a little heavier in the steering but not overly so, my 19yo daughter didnt have a worry driving it up the High Country.

As for a Air Locker in the front, its nice but I like the steering response of the LockRite rather then a Tractor like steering of a vehicle with the front locker in.
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AnswerID: 96109

Reply By: Richard & Anita (QLD), Members - Tuesday, Feb 01, 2005 at 21:42

Tuesday, Feb 01, 2005 at 21:42
Thankyou all, who have answered. I have thought of Detroit but as yet I don't think they make one for a 2002 Challenger. Anyhow I will have a think and see what happens.

Thanks

Richard
AnswerID: 96144

Follow Up By: Richard & Anita (QLD), Members - Tuesday, Feb 01, 2005 at 21:47

Tuesday, Feb 01, 2005 at 21:47
Oh yeah forgot they don't make a rear one yet so putting it in the rear is not an option unless I go for the ARB one.

Richard
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FollowupID: 354914

Reply By: Member - Matt Mu (Perth-WA) - Wednesday, Feb 02, 2005 at 00:36

Wednesday, Feb 02, 2005 at 00:36
Check this for an Isuzu MU (1745kg unladden) with front Lokka fitted for over a very punnishing year!! This car leaves the other stock MUs for dead for traction, walks up where the others have to crawl or climb!!

[ View Image]

Have a look at the rest of his website if you like, some pretty tame pics, you know, never have the camera ready for the good shots!!

link text

You wont be dissapointed, I am getting one ASAP (funds permitting)!!

Matt.
AnswerID: 96173

Follow Up By: Member - Matt Mu (Perth-WA) - Wednesday, Feb 02, 2005 at 00:43

Wednesday, Feb 02, 2005 at 00:43
Stuffed both those links!! hahah

Check this out!

link text

Matt
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FollowupID: 354947

Reply By: SteveW - Thursday, Feb 03, 2005 at 16:45

Thursday, Feb 03, 2005 at 16:45
I have Lokkas on the front and rear of my 4Runner, they are great, I have heard of some bad stories but never seen any of them. There is no difference in normal driving, the front one only activates when the hubs are locked and the gearbox but into 4wd.

If i had the money i'd go LSD or Detroit locker in the back and air locker up front, but as with everything the budget has its limits

goodluck

steve
AnswerID: 96475

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