VDJ 70 Series Track Width Modifications

Submitted: Friday, Sep 05, 2014 at 01:12
ThreadID: 109401 Views:11062 Replies:5 FollowUps:16
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Just came across this document on another forum detailing the track width modification available from Multi Drive Technology (MDT) in Geelong for the VDJ 70 Series Toyota's.

Interesting fix, well engineered as we have come to expect from MDT.

Cost fully installed and engineer certified by MDT is around $3,500-.
You can do the install yourself obviously saving a few dollars.

http://www.multidrive.com.au/pdf/MDT_Tru_Tracker_Installation_V1.pdf

Here's also a video related to the subject.

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Reply By: Robin Miller - Friday, Sep 05, 2014 at 08:01

Friday, Sep 05, 2014 at 08:01
Great Idea John , actually I quite like those cars and also things like Prado's but am not able to accept there poor rollover performance.

This mod is of course mainly about aligning rear track to front.

I know some with the spacer solutioin , and its great if done well, but getting the basic rear track right is a better way to go , as it then allows for wheels with more negative offset to be fitted which is also required to get rollover angle up some where near 45 degree.
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Follow Up By: Member - John (Vic) - Friday, Sep 05, 2014 at 12:37

Friday, Sep 05, 2014 at 12:37
I know Mick O has had his rear axle widened by MDT a while ago, not sure if they used this method or they actually extended the axle housing and fitted longer axles.

Still it's a very innovative modification, quite easy to do.
Good engineering by MDT.


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Reply By: Ross M - Friday, Sep 05, 2014 at 08:51

Friday, Sep 05, 2014 at 08:51
It is a pity Toyota didn't make it correct in the first place, isn't it.

What Were They Thinking?

MDT's solution is quite innovative though.

Just need to drink plenty of beer to get the courage to use the grinder on a perfectly good housing. There is no way back.
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Follow Up By: Road Warrior - Friday, Sep 05, 2014 at 10:33

Friday, Sep 05, 2014 at 10:33
Unless you obtain a second handie from a wrecked 70 series and modify that (or keep it as your spare in case you botch it!). Seems to be a few smashed up/rolled over 70 series popping up at auctions here in Wait Awhile from the mines.
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Follow Up By: Member - John (Vic) - Friday, Sep 05, 2014 at 12:33

Friday, Sep 05, 2014 at 12:33
The MDT technique by supplying a spacer to ensure the cut is correct is excellent. Sure reduces the chance of stuffing up the cut.

Agree, it would be easier if Toyota had just fixed the issue, less cost also.


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Follow Up By: olcoolone - Friday, Sep 05, 2014 at 17:32

Friday, Sep 05, 2014 at 17:32
Because the V8 is sold in very limited numbers and markets and the petrol or 1HZ are a more common vehicle our side of Australia.

Only the V8 has a wider front axel.

So what was Toyota thinking...... it was not economical to put the wider axle in the majority of 70 series sold worldwide.
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Follow Up By: Member - John (Vic) - Friday, Sep 05, 2014 at 17:53

Friday, Sep 05, 2014 at 17:53
That makes perfect sense Richard, I never gave the other country non V8 vehicles a thought.
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Follow Up By: Member - Boobook - Saturday, Sep 06, 2014 at 07:09

Saturday, Sep 06, 2014 at 07:09
Outside Australia the petrol is now the V6 4.0 from the Prado. It also has the wider front track. Even places like South Africa have replaced the straight six with the V8 now.
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Follow Up By: Member - Serendipity(WA) - Saturday, Sep 06, 2014 at 08:42

Saturday, Sep 06, 2014 at 08:42
I don't know what the fuss is about. Nissan Patrol leaf spring utes have had the same wider front end track as toyota since 2000 and nobody seems to make a fuss about that.

I have had a toyota VDJ79 since new 2008 and never really noticed any difference to my old HF79 landcruiser in handling. Of course the new V8 makes a big difference.

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Follow Up By: olcoolone - Saturday, Sep 06, 2014 at 09:41

Saturday, Sep 06, 2014 at 09:41
No V8 in South Africa, only the V6.

http://www.toyota.co.za/ranges/land-cruiser-79-sc#specifications

There has to be a very good reason why Toyota have done it, might of been to expensive the remake the chassis to get the loading right between the wheel flange and the springs...... bigger gap between the two increases loading on the axles and axle tubes.
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Follow Up By: Member - Boobook - Saturday, Sep 06, 2014 at 10:14

Saturday, Sep 06, 2014 at 10:14
Actually you can get the V6 in petrol, the V8 and the HZ in

All have the wider track now.
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Follow Up By: Member - Boobook - Saturday, Sep 06, 2014 at 10:15

Saturday, Sep 06, 2014 at 10:15
Doh
Actually you can get the V6 in petrol, the V8 and the HZ in South Africa.

All have the wider track now. The HZ and V8 are available for diesel. V6 is petrol.
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Reply By: Mick O - Friday, Sep 05, 2014 at 15:36

Friday, Sep 05, 2014 at 15:36
John, by sheer coincidence I was down talking to Tom and the boys at Multidrive this morning. I had a look at the awesome six wheel drive tub ute they’ve made as a concept vehicle, “Southern Scorpion”. What a machine.

Darryl extended my diff as the prototype over two years ago. The made up a set of custom axles and then reinforced the diff. Since then they have developed their ‘Tru-tracker’ bolt on kit. The kit retails around $2600 and comes complete with all the required extensions etc. The sold a truck load of these at the Brisbane 4x4 show and have been flooded with enquiries and orders. They were turning up the new axles while I was there having a large order of billet axles manufactured. All Certified and ADR compliant

http://www.multidrive.com.au/overview.html

(You’ll also notice that they are offering the 500mm chassis extension for the single axle utes now as well – My truck was the first 500 extension done by MDT back in 2010. Still going strong after 80,000 hard and rough kilometres.)

Multidrive are also going to prepare a kit for those who don’t want the bolt on option and would rather a diff extension. This involves actually cutting the the axle housing just either side of the diff pumpkin and then adding in two turned steel extensions. The whole diff is re laminated and strengthened. I’m going to be running the prototype of this modification again. All engineered, certified and ADR compliant.

There are a lot of exciting things happening down there at the moment. The Crown Prince was gobsmacked with all the toys and work going on.

There was a write up on the Scorpion in the recent 4x4 Australia Mag

http://www.4x4australia.com.au/drive/road-tests/1408/mdt-southern-scorpion-6x6/

Will have some photos of the new diff being created in the next week or so.

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Follow Up By: Member - John (Vic) - Friday, Sep 05, 2014 at 17:57

Friday, Sep 05, 2014 at 17:57
An awesome Aussie company indeed Micky.
I love innovative thinking and these guys have it down pat.

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Follow Up By: Member - John (Vic) - Friday, Sep 05, 2014 at 18:28

Friday, Sep 05, 2014 at 18:28
I just read the link to the Scorpion article, what a beast!!
$180K is provably not to bad considering the work involved.

Is this your next truck Mick? :)

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Follow Up By: Mick O - Friday, Sep 05, 2014 at 22:01

Friday, Sep 05, 2014 at 22:01
It would be a little hard to slip that one past the Minister for War & Finance John!!! They'll move that for about $150K plus GST.
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Follow Up By: Member - John (Vic) - Friday, Sep 05, 2014 at 23:28

Friday, Sep 05, 2014 at 23:28
She'd never notice the extra axle :)

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Reply By: Bob Y. - Qld - Friday, Sep 05, 2014 at 15:54

Friday, Sep 05, 2014 at 15:54
After watching the video on John's link, watched another from Ultimate Suspension.

They are selling/fitting the Multidrive kit too, so that might save some Sydneysiders the drive to Geelong?

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Follow Up By: Member - John (Vic) - Friday, Sep 05, 2014 at 18:00

Friday, Sep 05, 2014 at 18:00
Yeah Bob they are distributing the units on a wholesale basis to other shops around the country.
Just do the job yourself if your a bit handy with the tools. :)
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Reply By: The Landy - Friday, Sep 05, 2014 at 16:41

Friday, Sep 05, 2014 at 16:41
I’m currently looking at this for “The Landy” as it appears to be a very good option for those wanting to correct the wheel tracking.

Oddly, I have a “paperwork” issue to work through first as I have a Lovell’s GVM upgrade to 3,900kg, however the MDT product is approved to 3,780kg only.

The 3,780kg is the sum of the axle group ratings on the vehicle. Lovell’s, for whatever reason, were able to gain approval for GVM upgrade to 3,900kg and they warranty the rear axle and components as it is above the manufacturer’s rating.

Will be talking to the engineer as he may be happy to certify the variance in the rear axle weight which is 2,360kg under Lovell’s approval, and only 2,300kg under the MDT approval for this product.

In the meantime there are probably many vehicles out there with “spacers” fitted illegally and nowhere near as safe…

Such is life!

Good weekend to all,

Baz – The Landy
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Follow Up By: Member - John (Vic) - Friday, Sep 05, 2014 at 18:14

Friday, Sep 05, 2014 at 18:14
I also have a Lovells GVM upgrade on my Troopy so will be interested in and answers you get Baz.

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