Where is better to Install Lokka - front of rear axle?

Submitted: Monday, Apr 27, 2009 at 09:12
ThreadID: 68265 Views:5001 Replies:12 FollowUps:14
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Hi guys,

Thanks for comments in my previous topic.
Could you please advice: I have original 100% locker from Toyota Corporation installed in front axle, I would like to install it in rear axle and in front – Lokka. Actually I don’t need all the time locked diff (rear), but most of all I use my vehicle not in town (Sands, muddy roads rare swamps). Vehicle is Toyota Land Cruiser 60; front suspension (springs, front bridge track rods and Panhard rod) will be installed from Toyota Land Cruiser 80.
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Reply By: four x four - Monday, Apr 27, 2009 at 10:07

Monday, Apr 27, 2009 at 10:07
you could also share your opinons...
AnswerID: 361796

Reply By: troopyman - Monday, Apr 27, 2009 at 11:08

Monday, Apr 27, 2009 at 11:08
As i said on the other forun LOL why not put the lokka in the rear to give you extra traction when in 2wd and then leave the toyota switch activated locker in the front for when you need extra traction . cheers from australia .
AnswerID: 361811

Follow Up By: four x four - Monday, Apr 27, 2009 at 11:22

Monday, Apr 27, 2009 at 11:22
You thinking is reasonable…
I thought as when I will need locked diff, I will lock and go.
As for front one: I have part time 4wd, so when I will activate 4wd, I need it to get off smth…
And one more thing: when Lokka will be installed in rear, will it become deteriorated soon – I don’t know. Also all axles are apart, so now I can easily change rear with front. Anyway before assembling ill check of all parts inside axles… What will you say?
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FollowupID: 629564

Follow Up By: Rossc0 - Monday, Apr 27, 2009 at 11:30

Monday, Apr 27, 2009 at 11:30
Unlikely you will wear the Lokka out, they are tougher than any manufactures supplied diff centre.

Cheers
Ross
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FollowupID: 629567

Reply By: Member - Ian H (NSW) - Monday, Apr 27, 2009 at 11:18

Monday, Apr 27, 2009 at 11:18
I would probably put the Toyota locker in the rear and drive normally with it unlocked(obviously) and the Lokka in the front which will only be working when hubs are locked and 4wd selected.
That way on the road all in normal but you can introduce the lockers as needed.
We have an 80 series DX with the average LSD in the rear and a Lock Right in the front. Works very well and would only be better with a Locker in the rear.
Just my thoughts anyway. Cheers
AnswerID: 361813

Reply By: Rossc0 - Monday, Apr 27, 2009 at 11:25

Monday, Apr 27, 2009 at 11:25
Put the Lokka in the rear.

Remember that these are really automatic unlockers ie they are locked until they need to be unlocked when going round a corner.

This gives you the most effect option in 2wd and the best option in 4wd (other than having front and rear lockers).

Cheers
Ross
AnswerID: 361816

Follow Up By: four x four - Monday, Apr 27, 2009 at 11:55

Monday, Apr 27, 2009 at 11:55
Aha, here is argument:

What will I do if I need locked (rear) axle when going round corner?
Rear axle could be locked constantly on any surface except dry asphalt it will not do harm to axle (if proper use).
If I would go round a corner in front axle and it will not be locked – it will safe my drive shaft.
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FollowupID: 629575

Follow Up By: Rossc0 - Monday, Apr 27, 2009 at 14:29

Monday, Apr 27, 2009 at 14:29
The Lokka will lock if needed going round a corner, they only unlock when needed to turn. If there is wheel spin then they will relock.

Cheers
Ross
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FollowupID: 629612

Reply By: four x four - Monday, Apr 27, 2009 at 11:48

Monday, Apr 27, 2009 at 11:48
I agree with you that it would be better if Lokka will be installed in rear diff instead LSD as it works worse then Lokka. … As for my situation I have little concerns about Lokka and Lock right as well. To tell the truth I see no difference as for price… Who got use it?
AnswerID: 361817

Reply By: Robin Miller - Monday, Apr 27, 2009 at 13:00

Monday, Apr 27, 2009 at 13:00
Hi four x four

Because of the negative effects on steering the lokka should always be put in the front where it is mostly disconnected when your in 2wd.


Robin Miller

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AnswerID: 361827

Follow Up By: four x four - Monday, Apr 27, 2009 at 13:31

Monday, Apr 27, 2009 at 13:31
Actually, that what I was talking about. Your thoughts as mine – to exclude Lokka in every day use. Usage with 4WD most likely.
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Follow Up By: Rossc0 - Monday, Apr 27, 2009 at 15:44

Monday, Apr 27, 2009 at 15:44
Does it have power steering?

If yes then you will not notice the effect on steering.

Cheers
Ross
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FollowupID: 629627

Reply By: Member - Mfewster(SA) - Monday, Apr 27, 2009 at 13:56

Monday, Apr 27, 2009 at 13:56
As I recall, the manufacturers/distributors strongly recommend that they go in the front. Ours, LC60, therefore went in the front and works just fine there. Had ours for quite afew years now. Seem to remember when I researched this, before making the decision, some stories of the locking/unlockingin the rear happening while cornering at speed on slippery bitumen and leading to less than happy driving. Scratching the memory banks, but as I recall. in these conditions it can make the back jump sideways.
AnswerID: 361838

Reply By: Rossc0 - Monday, Apr 27, 2009 at 14:33

Monday, Apr 27, 2009 at 14:33
What you have to way up is are you likely to use the locker while in 2wd?

If not then put the Lokka in the rear, it will work all the time and you will not notice it's there.

If in 4wd you need extra traction then you can select the locker in the front as it's more effective there.

Cheers
Ross
AnswerID: 361850

Follow Up By: four x four - Monday, Apr 27, 2009 at 14:54

Monday, Apr 27, 2009 at 14:54
Actually, I don’t need fully locked diff at all time. And also below is comment says that preferably to install Lokka into front axle (when part time 4wd as on my LC60 series)
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FollowupID: 629615

Follow Up By: Rossc0 - Monday, Apr 27, 2009 at 15:42

Monday, Apr 27, 2009 at 15:42
Like most things on here you will get generally a 50/50 split on how to do things. It's preferable in their opinion.

If you don't need a fully locked diff all the time put the locker in the front and the Lokka in the rear as this will give you the benefit of having automatic Lokka when in 2wd.

Having driven a vehicle similar to mine and the only difference was that they had the ARB locker in the rear and a Lokka in the front, I'd rather have it the other way round. On the same tracks mine was easier to drive and lost traction less.

Cheers
Ross
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FollowupID: 629626

Reply By: Rossc0 - Monday, Apr 27, 2009 at 14:50

Monday, Apr 27, 2009 at 14:50
Another consideration.

Is the front suspension beam axle or independent.

If independent then definitely put the locker in the front, but don't forget to put in stronger cv's (this applies to Lokka as well if you were putting it into the front).

Cheers
Ross


AnswerID: 361854

Reply By: Member - Mfewster(SA) - Monday, Apr 27, 2009 at 14:57

Monday, Apr 27, 2009 at 14:57
I think there is some confusion in these posts. I take it that because of the cap letter "Lokka" we are discussing the placement of an auto locker type. The correct advice for this type versus an air locker is probably different.
AnswerID: 361858

Follow Up By: four x four - Monday, Apr 27, 2009 at 15:31

Monday, Apr 27, 2009 at 15:31
So, Lokka where will be better in Front or rear axle of part-time 4wd. On the rest axle 100% diff lock will be installed. I think rear 100% doff lock, front – Lokka diff.
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FollowupID: 629621

Follow Up By: Rossc0 - Monday, Apr 27, 2009 at 15:35

Monday, Apr 27, 2009 at 15:35
We are talking about a Lokka as in here and also a locker as in here.

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FollowupID: 629622

Follow Up By: four x four - Monday, Apr 27, 2009 at 15:42

Monday, Apr 27, 2009 at 15:42
lokka from 4wdsystems_ like in 1-st link
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FollowupID: 629625

Follow Up By: Member - Mfewster(SA) - Monday, Apr 27, 2009 at 15:55

Monday, Apr 27, 2009 at 15:55
That's what I thought you meant, Lokka, with a cap. In which case I think my experrience and that of Slammin are the same. This type are better in the front. And the story that Slammin gives re the behaviour of rear auto lockers at highway speeds on wet bitumen tallies with the research I did.
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FollowupID: 629630

Reply By: slammin - Monday, Apr 27, 2009 at 15:29

Monday, Apr 27, 2009 at 15:29
Hmm seems the crowd is @ 60/40 for lokka's in the rear.

I would put them in the front. When I got mine for my Hilux Extra cab I was told by many companies that they reccomend front because,
- Increased tyre wear in the rear, as above they are really unlockers so yes they do unlock but if you are driving straight they are locked, now unless you can drive exactly straight and not move around your lane a bit then you will iincrease tyre wear. Similarly for slight long corners unless it is enough force to unlokk them then you're lokked.
- In wet conditions they can suddenly lokk on when going around a corner and you may lose control. They are NOT LSD so once they lokk you r going from nothing to full lokk. Case in point customer just b4 me insisted on rear Lokka's against fitters advice and lost control, ended up with fr/l damage and in the road drain going up Rex's lookout Cairns -> Port Douglas.
- By disengaging fr.hubs you can turn them off.

For the above reasons I would look for a LSD in the rear.

As it is in our Hilux, it made such a huge difference that's all we needed (fr Lokka) and just have the original wornout LSD in the rear.

YMMV as I don't have them fitted in the rear but that was the advice from many dealers in many states when I was researching it back in 2004.

Regards,

Sam.
AnswerID: 361871

Follow Up By: Rossc0 - Monday, Apr 27, 2009 at 15:51

Monday, Apr 27, 2009 at 15:51
The Lokka, Detroit Trutrac, etc are all forms of LSD.

Just that these are mechanical LSD rather then clutch type and lock 100% when required.

Difference in tyre wear is marginal and only an issue if driven mostly on hard surfaces, and the slight movement in a lane would have little or no effect. It's going round sharp corners in town and tight roundabouts where you will notice any extra tyre wear.

Lose of control is more likely to be going to fast for the conditions anyway.

four by four is not looking at LSD looking at using a Lokka and a locker.

Cheers
Ross
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FollowupID: 629629

Follow Up By: four x four - Monday, Apr 27, 2009 at 16:06

Monday, Apr 27, 2009 at 16:06
I don’t advise you LSD if only it would be torque sensitive.
I had speed sensitive – with the help of friction mechanism and LSD oil axle will be locked.
During 6 years I had front and rear axles equipped with LSD, I’m not satisfied. In serious mud only 2 wheels we engaged. But when stating or on slippery surface 4 wheels could carry on.
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FollowupID: 629632

Reply By: Member -Dodger - Monday, Apr 27, 2009 at 16:42

Monday, Apr 27, 2009 at 16:42
My advice would be to put the Auto Lokka in the front diff and the air locker in the rear diff as you have a part time 4wd system.
This gives a normal open operation when on the black top and in 2 wheel drive.
When traveling off road or over corrugations when the manual hubs are activated the vehicle has the advantage of a locked front diff when in a very loose gravelly situation then when in a difficult climb or a very boggy /slippery situation the rear diff can be locked giving maximum tractive effort.
I have had an auto lockrite in the front diff of My Nissan for 180k without problems however they do make a clicking noise when the front axle is active and on full lock. The Nissan's rear slippery is still working ok after 200k believe it or not.
The only thing that has stopped My nissan is ground clearance even with a 2" lift.

Just My thoughts and experience.
I used to have a handle on life, but it broke.

Cheers Dodg.

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AnswerID: 361885

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