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th400 to lt230 ?


Rizla 1
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If you want any info about the marks adaptors kit then give me a shout- i have a 4l80e to LT230 conversion

as DaveSIIA mentioned then have a chat with eliot Mez- he knows his stuff.

Is there any reason why you are running a TH400 over a 4l80e?

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I got a ex-drag box th400 of e-bay with all the bits on b/m shifter , explosion guard, manuel shift kit ,launch control, etc and it was pretty cheap and they rekon you can put 1500 hp through them !!

Thanks for the info - i will check out that guys conversion - and i see on that list is my good mate from Denmark does the kit , Per Bertelson so i will give him a buzz

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  • 1 month later...
Up-date Just got new one on e-bay for £470 - the ones from Marks adapters were near £900

See here -

that's a marks adaptors kit sold through the US company that does marks kits (advance adaptors or similar)

my marks adaptor kit to attach a LT230 to a 4L80e was nearer the £500 imported! someones quoting you silly prices or all their kit has just gone through the roof price wise

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that's a marks adaptors kit sold through the US company that does marks kits (advance adaptors or similar)

my marks adaptor kit to attach a LT230 to a 4L80e was nearer the £500 imported! someones quoting you silly prices or all their kit has just gone through the roof price wise

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I got a quote from the guy in france - he's there main europe seller ? and his price was with posting just over 900.

This guy name is Brian and his company is American parts and he has a couple left , funny though i did speak to him and asked him all about the kit - but he never said it was from Marks adaptors.

I not gone up the workshop yet to see if it fits but now you said that it's a Marks ;) of course it will fit

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The guy in France charges well over the odds, I bought mine direct but I think they've stopped selling direct now :(

If you get stuck it'd be worth asking on the outer limits forum. Someone might sell you one, they're a very helpful bunch.

There's a write up on my conversion here...

http://www.yorkshireoffroadclub.net/forum/...topic.php?t=194

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All i gotta do now is fit it :D

The first one I got had been misdrilled, I spent hours trying to figure out why, no matter which way around i fitted it, the transfer box was at the wrong angle and/or the bolt holes wouldn't match the gearbox ! If there hadn't been another vehicle there with the same adaptor so we could compare the two I'd still be there now :)

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Have you any pictures of it ? fitted

Taken a couple just now...

taken from the gearbox end...

normal_110_1025.jpg

taken from directly underneath, gearbox to the right.

normal_110_1027.jpg

This is one I took during the build...

normal_108_0882.JPG

There's a housing that bolts to the transfer box and then an adaptor ring that mates the housing to the gearbox. It has to be that long to make sure the nose of the transfer box is clear of the side of the gearbox. As you can possibly see the adaptor allows you to use standard LR ZF gearbox mounts.

One thing that I haven't mentioned before is that, rather than using an adaptor you could think about using an Atlas transfer box instead. It's an option I am still tempted to try for all sorts of reasons including:

1) It's a lot tougher than the LT230

2) A quad speed (crawler, low, high, overdrive) all in one box.

3) Part time 4wd so better fuel consumption potentially.

4) A much shorter overall transmission length.

The "only" obstacle to overcome is the drive to the rear axle unless you go for Nissan axles as the rear prop output is inline with the gearbox. Fitting a transmission brake will take a bit of work but doesn't look too difficult. You can get the box with either a right hand or left hand front output so the front axle isn't an issue.

There's loads of pics of the build in teh gallery here...

http://www.yorkshireoffroadclub.net/imageg...ls.php?album=85

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I'm surprised Eliot has not shown up.

He machined his own so there is the possibility he could make some for you.

http://www.mez.co.uk/4l80e-1.html

Steve

Eliot very wisely won't do work for anyone else- the liability issues if the main shaft pops at speed could be horrendous for him

it didn't take him long to machine up a copy of the marks adaptor kit though!

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Thanks for the pictures - looks fairly straight forward to fit , I've got a dana 300 tranfer box in the workshop that I could have used but as I'm using front and rear salisbury's I opted to go with the lt230.

One thing that did come up and might be worth a try as you have a transfer box already... I was speaking to a propshaft specialist about the possibility of changing axles. He reckoned that you could use standard axles and still run the rear output from the centre. I have to say I'm not 100% convinced but he said that as long as the phasing was at the correct angle there wouldn't be a problem with either wear or vibration. As I didn't have an atlas box floating around the garage I'm not going to spend £1500 to find out if he's right but if you've already got a suitable box and need to get a propshaft made up anyway... maybe you should be the guinea pig.:)

I know people have used the atlas on Rangies with standard axles in OZ but most have said they go through UJs but no idea if that is because it simply won't work or if the phasing was wrong.

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