installing of diff lock into HJ60 (1 Viewer)

[aklosak]

Hi all,

I just purchased a 1988 HJ60 (H2 engine) Land Crusier, with both open diffs (no locking, no LSD). It's a 4.0 liter diesel engine (without turbo).

I would like to ask, if it is possible (and if it is a best option) to install the oryginal cable diff locks (Toyota parts 41460+41453+41451 and few more) or it is better to seek for some external diff locks like ARB or others.

the full set of orginal diff lock (one axle) cost around $1000 (at least here in Poland).

I also considered (after Reading webpage of Ben Ferguson) installation of HZJ80 electric locks into my HJ60, but it looks the whole "OEM electric locking differential (with actuator), rear, 80 series" cost $3500, so it is more expensive.

I would be gratefull for Your suggestions

regards
andy

 

[Mike S]

Andy, is this a full floating rear axle, or semi-floating?

I have looked at this, and, while the ARB will work fine, I am considering the FZJ80 electric locker. However, the cost here in the US is much lower. If I were you I would go with the ARB, which does not require replacement of the short side axle shaft.

M

 

[aklosak]

...is this a full floating rear axle, or semi-floating? ..

M

Hi Mike,

it is a full floating one.
(assuming that full floating meas "open" and semi floating means "Limited Slip Diff")

ARB cost here around $1300.

So, are You saying, that even I use original (Toyota) cable locking stuff, I still need to replace the short side axle shaft ? Have You got maybe a list of part numbers nessesary to do it ? This additional cost probably makes ARB the "most economic option".

Mike, do You know what is the cost of 2nd hand/new electric locker (all reauired parts) from FZJ80 in US for front and for rear axle ?

regards
andy

 

[Mike S]

Hi Mike,

it is a full floating one.
(assuming that full floating meas "open" and semi floating means "Limited Slip Diff")

Landcruisers were built with two differnt rear axle types. The 'semi - floating' has a 'C' clip near the differential that retains the axle. The 'Full floating' axle has no 'C' clip, and a bearing assembly to carry the outboard load, and a protruding hub. It is likely that yours has a Full Floating axle, since it is a Diesel. You need to have a FF axle to use the Toyota e-locker. With the ARB, you can use either type of axle.

ARB cost here around $1300.

Cost is about $800 retail in the US, but also requires air compressor and air lines - another $250.

So, are You saying, that even I use original (Toyota) cable locking stuff, I still need to replace the short side axle shaft ? Have You got maybe a list of part numbers nessesary to do it ? This additional cost probably makes ARB the "most economic option".

Yes. You will need to replace the short side axle shaft. See this write up...FZJ60 lockers into an FJ60 by Ben Ferguson. He put a Toyota locker into his FJ60 with full floating rear end. This includes part numbers.

Mike, do You know what is the cost of 2nd hand/new electric locker (all reauired parts) from FZJ80 in US for front and for rear axle ?

Used they can be bought for around $500. New costs about $800 to $900. You will also need the short side shaft, which is about $250. Total cost difference between Toyota e-locker and ARB here is not much. Both will cost about $1000 for one axle.

>>>>The FZJ80 REAR locker is the only one that fits the 60 series -the front locker in the FZJ80 is smaller, and will not fit. If you go with the Toyota e-locker front and rear, you will need two rear lockers from an FZJ80. There are cable lockers available for the 60, put are hard to find in the US.

Let us know what you decide.

M

 

[HZJ60 Guy]

I would go either ARB's or with factory 4.11 gears and cable lockers. Either are way less complicated than the electric jobs. The cable lockers are the easiest I'd say.



TB

 

[VTCruiser]

It is likely that yours has a Full Floating axle, since it is a Diesel....

just to jump in quickly here, this is not necessarily true. My '86 HJ60 has a "heavy duty" R/P but semi rear axle. that may have been different in '88, but not all diesels came with full floaters. perhaps it was an option?

 

[aklosak]

Mike and TB
thanks for Your comments and clarification on float/semi float issue. I will check it next week and let You know.

In the meantime I will again comapre the costs of all 3 options, ie ARB, oryginal cable locks and FZJ80 electrical one, taking into account possibility of importing it from US. And the price will be probalby a most important factor.

few things more, if You allow:

1.

I would go either ARB's or with factory 4.11 gears and cable lockers....

If I am docoding my ID plate correctly, my ring/pinion gear ratio is 3.7, not 4.11. Please correct me if I am wrong.
ID plate says My HJ60 ID plate

Engine 2H - 3980 cc
JT1W0HJ6000962490
Model HJ60LG-MW
c/tr/a/tm 4E8-?B42-K052-H55F

according to www.bushtaxi.org :
http://www.buschtaxi.org/cms/index.php?id=167&backPID=42&swords=diff&tt_news=188

and also to FAQ
http://www.birfield.com/~ramullen/FAQ/TEXT/09-01.html

code "05" in K052 means 9,5'' ring gear, 3.70 ratio and open diff with 2 spider gears.

2.
As I read in the Forum, approx 31''x10,5'' tyres on 15'' rims are reccomended for long journeys with some off road conditions (like trip to Iceland I am planning). If I use such a tyres, and maybe in the future switch to 33'', which ring gear ratio would be better - actual 3.7 or 4.11 (if I use electric FZJ80 lockers in both axles) - please excuse me if that question if completly stupid. I am still a rookie

all the best
andy

 

[HZJ60 Guy]

Aklosak, here is a picture of the rear wheel of a BJ74. See how the axle HUB sticks through the wheel! That is a full floating rear axle. A semi floating axle would NOT have an axle hub that stuck through the wheel. A semi floater would have a FLUSH axle with the wheel. Nothing would stick through the wheel.


TB

 

[VTCruiser]

also many trucks came with plastic "hub caps" to replicate FF hubs. If the hub appears to stick out of the wheel, make sure it is not just one of these caps.

 

[eppy]

Yes the hj60 has fullfloating axel.

 

[Mike S]

If I use such a tyres, and maybe in the future switch to 33'', which ring gear ratio would be better - actual 3.7 or 4.11 (if I use electric FZJ80 lockers in both axles) - please excuse me if that question if completly stupid. I am still a rookie

There are no stupid questions, just stupid assumptions.

If you use an e-locker from an FZJ80, it will replace the existing third member (all the axle gears) and they are all 4.10, as far as I know. This will require that you change the gearing in the front axle as well, so that the ratios in both axles will be the same. I believ ethat this is also true of cable lockers, but I am not certain.

The ARB can be used on your stock differential third members, so you do not need to change the gearing, but you can if you prefer to do so. With the H55F transmission, the 3.73 gears are fine with most tires up to about 33". You might find an advantacge, however, in using the 4.11 or 4.10 gearing if you run 33" or larger tires or do very rugged driving in bad terrain. I think that 4.10 is right for 33" tires, both on raod and off, since you have the overdrive capability of the H55F.

M

 

[VTCruiser]

Yes the hj60 has fullfloating axel.

mine doesn't.

 

[beanz2]

Andy, did you mention in your original post that a complete locked axle sell for US$1000 where you are? Consider getting a pair of complete axles with lockers and sell your old axles. You may come out ahead than sourcing new ARB's or parts for electric lockers.

A buddy from Finland told me a while back that cable locked Toyota axles are common in Scandinavian countries. Consider looking up there!

Dave

 

[HZJ60 Guy]

Yes the hj60 has fullfloating axel.

My 1987 Canadian HJ60 did NOT have a floater rear.



TB

 

[aklosak]

Andy, did you mention in your original post that a complete locked axle sell for US$1000 where you are?

Hi Dave,
1000$ is a cost of only locking mechanism in Toyota service(part numbers 41460+41451+41453)
I will check the total axle cost, but I need to spend some time and figure out from chassis manual what part numbers I need to ask for. HJ Crusiers are very rare here in Poland, so selling old axle/buying it used is almost not possible.

A buddy from Finland told me a while back that cable locked Toyota axles are common in Scandinavian countries.

thanks for the info
I have spend few years in Denmark, so I've got few friends their. I look into this.

cheers
andy

 

[beanz2]

Hi Dave,
1000$ is a cost of only locking mechanism in Toyota service(part numbers 41460+41451+41453)
I will check the total axle cost, but I need to spend some time and figure out from chassis manual what part numbers I need to ask for. HJ Crusiers are very rare here in Poland, so selling old axle/buying it used is almost not possible.

Hi Andy,

You cannot take just the parts you mentioned and bolt it on the standard differential. The housing itself is different. The whole differential has to be replaced with a locking one. If you must have a new one, check with the dealer for a complete unit but complete axles is the better way to go in my opinion.

Cheers,
Dave

 

[aklosak]

Andy, is this a full floating rear axle, or semi-floating?

I have check today (following great picture explanataion from HZJ60 Guy - Thanks!) and my '88 HJ60 has a semi-floating rear axle and fully floating front one. This leaves me only two options - or new/used axle with original cable lockers or ARB air lockers.

I'll check the prices and let You know which option I have chosen.

Thanks for all Your input !
andy

 

[Mike S]

I have check today (following great picture explanataion from HZJ60 Guy - Thanks!) and my '88 HJ60 has a semi-floating rear axle and fully floating front one. This leaves me only two options - or new/used axle with original cable lockers or ARB air lockers.

I'll check the prices and let You know which option I have chosen.

Thanks for all Your input !
andy

Andy, it seems that you are right - those are the two choices. Make your life simple, and install ARBs, or just install Toyota e-locker (from rear of FZJ80) IN THE FRONT.

Keep us informed.

Mike

 

[aklosak]

Andy, it seems that you are right - those are the two choices. Make your life simple, and install ARBs, or just install Toyota e-locker (from rear of FZJ80) IN THE FRONT.

Keep us informed.

Mike

Hello again,

I decided to use the Toyota e-locker (4.1 gearing) into my front axle (which is fully floating). As I cannot keep the rear gearing at actual 3.7, I can:
1) change the rear axle gearing into 4.1
2) change the existing SF rear axle into FF and install 2nd e-locker

The issue with installing e-locker is well described by Ben Fergusson. My questions now are:
a) how (in easierst/chapest way) to change the gearing from 3.7 to 4.1 ?
b) how to change SF rear axle into FF ? (read: what I need to buy/what can I use from SF and transfer to FF, what would be approx cost of used parts?)

I have seen several FJ80 -> FJ60 axle swap posts - is it the only option ? Or can I just buy in US 2nd hand FF rear axle ?

will be greatfull for comments.
andy

 

[Satamax]

Aklosak!

Since you live in poland, you might speak ger'man too! There's tons of 60 series over there, and you might find secondhand axles or a wreck with the right axles. You can also search in holand. Knowing the car market in denmark, i'd doubt you'll find anything cheap!

Best regards.

Max.