RoverDrives DX-COV, Extended Sump for LT230 Transfer Box

I was browsing the excellent discovery2.co.uk website the other week, and found that Nick had fitted the RoverDrives DX-COV extended sump for the LT230 Transfer Box. With a bit more reading, I found that not only does it aid vehicles in extreme climates, but it can help with tuned vehicles (such as mine) in the UK Climate!

RoverDrives DX-COV

RoverDrives DX-COV

Basically, the extended sump plate replaces the angled sump plate already on the box, it’s a simple bolt on job, the only tricky bit can be getting the cross member off (though on mine it came off without any issues). Once the cross member is off, you can get at the bottom of the LT230 Transfer box:

Crossmember in the way

Crossmember in the way

Crossmember removed

Crossmember removed

It’s then a simple job to remove the bolts, and the odd shaped stud nuts! I can only assume they were installed for a bracket of some sort that never made it onto the production vehicles! Anyway, with the bolts removed, the sump plate can be removed, revealing the internals of the box:

Inside the LT230

Inside the LT230

Comparing the sump plates side to side, you can see how it all fits together and extends the sump:

Sumps Side by Side

Sumps Side by Side

The next step, using the supplied Gasket and Stainless Steel Allen Cap head bolts it to apply some gasket sealant to both sides, and re-attach it.

Extended Sump Fitted

Extended Sump Fitted

As you can see, the odd angle of the cover drops the fins down perfectly into the airflow under the car as you can see with the cross member re-installed:

Crossmember re-fitted.

Crossmember re-fitted.

Then, you can re-insert the sump plug (which goes into the main transfer box casting, not the new sump casting) and re-fill. We put in approx 2.8L of oil which is about .7 of a litre more than the 2.1L advertised capacity. We weren’t particularly scientific about the measurement though!

It’s important to note that this doesn’t fit on some V8’s due to exhaust fouling issues. As for where to get it, Rocky Mountain Spares sell it for £59.80 inc vat, but there may be postage on top of that! See here to purchase.

As for how it works, well I’m sure there was less heat during a short motorway journey after fitting it

Update 31/1/2011: I went to Swansea on Friday, an hour and a half on the motorway at 0.8leptons and the transmission tunnel was oddly cool compared to how warm it used to get, so the extended sump is very effective!

Posted in Landie

One Response to “RoverDrives DX-COV, Extended Sump for LT230 Transfer Box”

  • Phill says:

    Hi Alex, bought one of these sumps, fitted it, looked odd, thought i may have it on back to front, thought i’d check the manuf. website for a photo and there was bugger all!, did a bit more specific searching and found your pics. Brilliant geezer!!! In the right way round now, whew, thank’s to Alexs’ blog…. p.s. mine was $145 Aud and didn’t come with the fancy stainless bolts….grrrr
    Cheers bloke, Phill


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