DIFF LOCKS - factory Toyota or ARB

Thanks for the info Luxoluk. How do you find your factory lockers? In particular do you ever have trouble getting them to engage. I've been told it sometimes takes time for them to indicate they're in. Do you mean to say that the 265/75R16 tyres are better or worse for highway cruising? Do you find the rear end a bit slippery in the wet on-road with lockers disengaged?

Have not had to use the lockers in "anger" to date but I have engaged them on a couple of occasions as a precautionary measure. They do not engage quickly like the ARB items. The open rear diff is not a problem for ordinary driving in the wet, in fact it may be preferable to the LSD given things can get exciting when both rears let go at speed. As for extreme bush stuff I will let others comment on that! The gearing from my perspective is about 10% underdone and a set of 285/75 or 255/85's would have better suited my purposes however getting spare tyres may create a problem in some areas. To do a desert trip I have atleast 1500 to 2000kms before I hit the dirt so cruising speed is a consideration for me...not everyone however!! Unfortunately I have got too used to loping along in V8's and have yet to accept it's ok to drive a diesel at a squillion rpm??? Cheers

Good point about tyre availability. I supose 265/75R16s are a resonably common size. Ever worked out your fuel economy at cruising speeds with them?

Thanks 'See You'. Do you mean factory locker in the front only? My Toyota dealer led me to believe it was both front and rear or none.

ARB aftermarket up front.

I have been told by Toyota that they only do a duel difflock instalation like they do in some Saharas. I believe that they are a mainly Eoro and Canada option on the 75-79 series.

Checkout the price ARB vs Factory. Also make sure that the ARB ones do not void your warranty on the diffs.

I still have never needed anything more than a rear LSD and front locker so it may be better to save the money and spend it on a winch.

Thanks Mate. LOL

do u have it mounted yet?

Bruce I have to get the broken bits back from Mr Rocky Crawly listed above here if he still has them???
Then I might just take a photo or two and post them on here for a trophy. LOL

come on John, trophy for the club! We did similar in the bike club with a bent crank award

Hey Bruce thats a great idea.
Eric you still got the bits?

Darren I mine busted with with an ARB locker.
Problem appears to lie with teeth that are not up to the task.

Cheers

$hit!!! Should read "I Busted Mine" not "I mine busted"

Sheesh!!! I must proof read before I send. LOL

The locker is only a small part of fixing the front diff, to be stronger, we have about 30 odd out there now, starting with mine back in 96 in my 80 with 400hp and 36" swampers , and we havent had a fixed one back broken again yet, but have had 3 of them back with broken cv's.

Did a 100 2 weeks ago which is now on its 5th cw & p in less than 100k.

So in your view why they are stripping teeth of the crown wheel?

Is this the same type of failure you have seen in other models or are they breaking something else?

Cheers

I would reeeely like to know what these guys do to bust the front diffs The vehicles at work get driven underground in low range getting more 4wd time in a week than alot would get in a year and do more reversing (alot of hard reversing foot flat in reverse up declines out of drives etc) in a shift than alot would do in a year ................................... And Ive never seen one bust

ah hang on "back in 96 in my 80 with 400hp and 36" swampers" - yea that would probably do it

I dont think to many 4wd's have broken on reasonable level surfaces during day to day duties.

u still got that vid clip of ya blue 80 revvin its norks off in that winch comp I think it was??

I have afew vids somehwere, but most have probably seen "stormin Norman" in the dark blue 80, which was my truck, just after I sold it to him.

I dont think to many 4wd's have broken on reasonable level surfaces during day to day duties

mmm Obviosly havnt been down to many mines?

standard trucks loaded, with standard tyres, dont kid yourself how difficult you think mines are, vs what breaks them playing on weekends.......

You miss the point (again) from the way people talk it sounds like a tojo front diff is in mortal danger every time you put it into reverse or take it over some uneven ground. I have no doubt running a 400 bhp donk with huge tyres could well bust the diff if you try and jump it too often but as I have explained from my experience they will take reversing up declinesfoot flat at 4500 rpm for hundreds of metres and have no problems driving around minesites locked in low 4 because you cant even get them out. This is alot more 4wding than any recreational vehicle would ever get close to so if they were that weak It would show.
Seeing as minesite work is so easy perhaps you could lend me your prado to see how it holds up? I am still waiting to see how far I can drive it cross country with those tyres!

I may of missed the point, but at least i dont have selective rmemory on posts to suit what I think.....

I told you what tyres you can try, obviously cant, or wont.

As for the "mortal danger' I think if you actually read the point being made, you will find "shockload" causes the breakage, not reversing uphill for a long way at any rpm, but then, none are as blind as those who wont see.....

And if you actually listened occasionally, you might notice I dont have a prado.........

[even though some mining companies are already using them.......]

"and can be prone to breakage in reverse" your words not mine
As for the tyres I actually did try googling them but didnt come up with anything so if you have any other info on them such as are they speed rated, road legal? price? etc etc I will be happy to read it

"Having owned one, i would disagree with that opinion. " (prado) your words again I realise after a re read it could mean you used to own one but with that statement along with the picture on your website I hope you will forgive me for the confusion
now if you will excuse me ive got a selector to push into low 4 and some driving to do (some people actually get to 4wd every day - not just weekends)

Taken out of context as a small part of a big post it does, yes, but if you read the post properly, rather than selectively, you will see it says stopping the crownwheel being able to flex away from the pinion as pfixing it from happening......

One day, when your a big boy, you will be able to put 2 + 2 together to = 4, saving anything technical having to be explained for you...

quote
""Having owned one, i would disagree with that opinion. " (prado) your words again I realise after a re read it could mean you used to own one but with that statement along with the picture on your website "

So we now see you admit your skills of deduction from peoples posts needs more effort from your side to be fully understood.

You assumed [= ass/u/me]I "own' not owned a prado, and the webiste isnt mine, so the car on ther has no relevance other than on the webpage of where I work, and i owned a 90 series, not a 120.......

Some may get to put a vehicle in 4wd every day, just like some get to see a hunderd or so a week go through the door, used for all different things, by all types of people, with all kinds of accesories, rather than see the same use, by the same people, in the same vehicles, making for a slanted view on the whole world, vs a small portion of it.

rather than see the same use, by the same people, in the same vehicles, making for a slanted view on the whole world, vs a small portion of it.

12 jobs in the last 8 years that required the use of countless different 4bys for varios uses by different people not including my personall vehicles - like you said [= ass/u/me

I would of thought with so much self proclaimed knowledge, your opinions would reflect that more often....

Sounds like you work in pussy mines Davoe, I've seen the diffs destruct a few times but we treated them hard.

Maybe |Im not trying hard enough TD :) although the ute we used on the other site has cost 24 grand in 12 months

Thanks very much John.

Your info has been very helpfull.

My Toyota dealer has been very good to me over the years when it comes to warranty claims despite the hard treatment my vehicles get. It'd be good to have my lockers covered by the same warranty. Even if I have to wait a few months.

Bit off the point if you don't mind but. Is your 78 a TD? If so what size tyres do you run and how do you find the drive ratio with that size eg. highway/off-road? Gotto decide what size tyres I'm going to order it with too.

Cruza 256x75xR16 is what I run.
Yeahs its an RV TD 4.2.

This is the same rolling diameter as the original tyres fitted by yota.
No issue at all with drive issues 100 KMPH = about 2400 RPM fuel wise if not heading into a strong head wind is about 650 km's' per 90 odd litre tank on the black top obviously changes when in low range.

No issue off road, although I have to admit that sometimes an inch or to more clearance under the diff's and spring hangers would be nice.

I stayed with original diameter tyres as I did not want any potential insurance problems with non standard dia wheels.

Its always worth fitting Lockers if you have the dollars.
In my view spend the extra $ and fit the ARB lockers.
Plenty of info in the archives on here on the pro's and con's do a search and have a read.

Cheers

dont just shop on price, you cant really compare a locker you cant control, with one you can.....

Nobody has really indicated if factory lockers can be retro fitted. If so where and how much? Does toyota do them on existing vehicles (ie already registered)?

Thanks Kalgoorlie for actually reading the question!

I think you are the first one....

Isnt that one of the joys of airing your thoughts on a public forum, that you never know what responses you will end up with.

Especially on a forum which doesnt seperate "chat" , "tech" or trip information, but perhaps going to www.lcool.org and joining the 100 or 7_ series email lists may get him the technical info he may need.

To the best of my knowledge you can't retro-fit Toyota Lockers.
They are not sold as an aftermarket fit.

Thanks for that John. That was a simple and consise answer that elliminates the genuine from the choice option.