Tegralok

I am on holiday in Laos at the moment and have just driven a 2004 td4 that has had the VCU replaced by a TEGRALOK unit . Never knew this option was avalible , Gives selectable 4 wheel drive.
Has anyone else come across this system . I will be looking at where I can buy a conversion when I get home.

There has been at least one thread about it on here in the past.

Yeh, was discussed on here with the developer...

https://www.landyzone.co.uk/land-rover/alternative-to-the-fluid-coupling-vcu.301629/

I didn't think it had got to production.

fredi250 said:

I am on holiday in Laos at the moment and have just driven a 2004 td4 that has had the VCU replaced by a TEGRALOK unit . Never knew this option was avalible , Gives selectable 4 wheel drive.
Has anyone else come across this system . I will be looking at where I can buy a conversion when I get home.

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It wasn't an option. It was an expensive (bodge) way to solve a problem that wasn't a problem.
The cost of such an item would be the same a many VCUs and won't be as effective.

Just buy a set of matching tyres and decent quality replacement VCU and forget about it.

I found it very nice to drive with a real ease of operation and from the quick glance I had underneath a well manufactured unit. I dont think you could call it a bodge I drove 300 miles of rough Laotian roads and it was impeccable , OK I have never had a problem with a VCU on any of the familys 3 freelander 1s in fact the 2002 went 146000 before the original VCU began to tighten , But I just like the Idea.

fredi250 said:

I found it very nice to drive with a real ease of operation and from the quick glance I had underneath a well manufactured unit. I dont think you could call it a bodge I drove 300 miles of rough Laotian roads and it was impeccable , OK I have never had a problem with a VCU on any of the familys 3 freelander 1s in fact the 2002 went 146000 before the original VCU began to tighten , But I just like the Idea.

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It is a bodge because the Freelander's front are rear diffs are set at different ratios. This means the Tegrolok or whatever it's called, will actually cause transmission wind up and damage the IRD and rear diff, unless the vehicle is driven on loose surfaces while it's engaged. The idea if the VCU is to automatically send drive to the rear the moment that traction is lost. This enables the Freelander to just keep going, regardless of the ground conditions or skill of the driver.

What is there to like? It's an expensive and pointless way to undo all LRs development and damage the rest of the system at the same time.

wont make much difference if you only engage 4wd when it is needed, but you wont be able to engage it as quick as a VCU.

.... but if you want it.

Lots of peeps have 2" lifts, muds, LED light bars and never take the car off road.

What's the point of those ladders on the back?

GrumpyGel said:

.... but if you want it.

Lots of peeps have 2" lifts, muds, LED light bars and never take the car off road.

What's the point of those ladders on the back?

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to hang on to when a thieving scroat drives off with your pride n joy?

Slick! just don't use it going to tescos

Just one for interest really. I was looking at Austen's Bell Engineering FB page today and saw that he has an interesting project on the go.

GrumpyGel said:

.... but if you want it.

Lots of peeps have 2" lifts, muds, LED light bars and never take the car off road.

What's the point of those ladders on the back?

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they are for short people to watch the vehicles roof

Good find do you have a proper link to this? can't seem to find it on their website.

jedi said:

Good find do you have a proper link to this? can't seem to find it on their website.

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It's on his facebook page so you'll need to log in to see it I think.

Sorry got it now my crappy phone didn't see it as a link until i turn it to lanscape mode.

kernowsvenski said:

Just one for interest really. I was looking at Austen's Bell Engineering FB page today and saw that he has an interesting project on the go.

Click to expand...

Presumably that will work for what they want it for - ie when they lift the handbrake to spin it round a bend it will disengage 4WD. However, it is not an option for a road car. On a road car you would presumably run it 2WD most of the time (or else what's the point of it) and then the driven end of the VCU will be permanently dragging round the undriven end. I recon it'll will wear the plates and fluid very quickly. On a normal Freelander setup both ends of the VCU are driven and usually turning at the same speed - hence low rates of wear.

I know nothing about rallying, but I question whether its of any use on a rally car either. How much time will it save going round the hairpin corners compared to the extra weight and therefore reduced acceleration for the remainder of the course?

Could they not just made a center diff n had the best of both world's? would that worth?