Woody3 Posted August 23, 2010 Share Posted August 23, 2010 Hi all, I have a LT77 Gearbox and Transfer box (unknown model as I can't find a number on it as I don't know where to look!) sat in my garage that no one wants to buy from a RRC 200tdi. I have been browsing this forum and noticed you can swap the Defender's existing transfer box for a Disco transfer box to improve top end speed / make it quieter! Can I do this with the transfer box that I have? I also have worked out there maybe an issue with diff lock and possibly the handbrake fitment? Please can someone advise, as currently I'm sat here scratching my head. Thanks Quote Link to comment Share on other sites More sharing options...
Snagger Posted August 24, 2010 Share Posted August 24, 2010 Hi all, I have a LT77 Gearbox and Transfer box (unknown model as I can't find a number on it as I don't know where to look!) sat in my garage that no one wants to buy from a RRC 200tdi. I have been browsing this forum and noticed you can swap the Defender's existing transfer box for a Disco transfer box to improve top end speed / make it quieter! Can I do this with the transfer box that I have? I also have worked out there maybe an issue with diff lock and possibly the handbrake fitment? Please can someone advise, as currently I'm sat here scratching my head. Thanks I think most 200 Tdi RRCs had the Borg Warner transfer box. The RRC Borg Warner and Discovery LT230 have the same 1.2:1 ratio. The Defender LT230 has lower ratios (1.4:1 or 1.6:1). The cases look markedly different, so you should be able to tell easily if you have a BW unit there. LT230s all look basically the same, regardless of their ratio or vehicle model.The Borg Warner transfer box is chain driven and has a viscous unit that requires no diff-lock lever. It acts as a limited slip diff and is always engaged. The lever moves fore and aft to select high and low range, just like on the LT230, but has no lateral movement. Quote Link to comment Share on other sites More sharing options...
Woody3 Posted August 24, 2010 Author Share Posted August 24, 2010 Thanks Snagger...much appreciated. Does anyone have a photo of a BW Transfer box, so I can make sure it matches up ok? So technically, I won't be able to select diff lock, but the viscous unit will technically engage it automatically? I'm a novice when it comes to gear/transfer boxes etc. Thanks, Quote Link to comment Share on other sites More sharing options...
reb78 Posted August 24, 2010 Share Posted August 24, 2010 Have a look at Ashcrofts site. Loads of pics and also info on where the serial numbers are. Quote Link to comment Share on other sites More sharing options...
Snagger Posted August 25, 2010 Share Posted August 25, 2010 So technically, I won't be able to select diff lock, but the viscous unit will technically engage it automatically? Well, sort of. It's more correct to say it's as if the diff lock is already engaged, but will allow enough slip on good tractive surfaces not to damage the rest of the transmission. It does scrub the front tyres a little on the shoulders of the tread, but nothing significant. Quote Link to comment Share on other sites More sharing options...
Woody3 Posted August 25, 2010 Author Share Posted August 25, 2010 Is the viscous unit better than having the typical manual selection of diff lock...or is it swings and roundabouts? That Ashcroft site is very informative! Quote Link to comment Share on other sites More sharing options...
dirkthe1 Posted August 25, 2010 Share Posted August 25, 2010 You may be opening a can of worms with that- some people have argued that its a half measure or compromise, but then others say that its the best of both worlds. Ive never driven one thats not auto, and it does make life much easier. A mate says that it makes driving on road nicer, smother and roundabouts more "fun". Personally I prefer the LT230, but then I have only driven the other a few times. I would imagine that it would come down to what the vehicle is to be used for? Quote Link to comment Share on other sites More sharing options...
Woody3 Posted August 26, 2010 Author Share Posted August 26, 2010 Fair enough... I use my Defender for the following: 1) Everyday traveling to work. 2) Odd bit of green laning...most extreme would be Stanage Edge 3) Towing a trailer to shows and through muddy fields. Would I benefit? Is this an engine out job? As the engine has only just gone in! lol. If someone could point me in the right direction of any "how to's" that would be great...I'll do a search in the meantime Ta, Quote Link to comment Share on other sites More sharing options...
Snagger Posted August 26, 2010 Share Posted August 26, 2010 I'd say fro that use that the BW would be better. Anywhere you're likely to be dangling wheels in the air or frequently losing traction, a locked LT230 would be more durable. Quote Link to comment Share on other sites More sharing options...
dirkthe1 Posted August 26, 2010 Share Posted August 26, 2010 http://forums.lr4x4.com/index.php?showtopic=14601&st=0&p=150884&hl=+transfer%20+box&fromsearch=1entry150884 Engine stays in. Almost everyone has a slightly different trick to doing it but thats you cant go wrong with that! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.