 | Home > Technical > ATB (torsen) front and rear install |
 
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| mikeh501 Member Since: 07 Jan 2013 Location: United Kingdom Posts: 1142  
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ive got one, but yet to turn a wheel. it looks a quality bit of kit is about all i can say
when its built, then ill have 3 ATB's in my landie  |
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15th Dec 2015 2:29pm |
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| taazzukcb Member Since: 30 Aug 2013 Location: Derbyshire Posts: 663 
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I've had one in since April/May.
Nice and solid unit and much stronger IMO than OEM, so it may cost, but it should last. My MOT man stuck it on the brake rollers though. I think I've gotten away with it, but it shouldn't go on these! |
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15th Dec 2015 2:36pm |
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| redline Member Since: 28 Jun 2015 Location: Mountains and Lakes Posts: 221 
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@Mikeh: That will be one hell of a setup when done!
@Taazz: Did it have any discernible effect on the handling when doing its limited slip thing (ie unlocked)? I'm trying to decide whether to do the rear or centre first. Doing both at the same time would likely result in instant divorce.... |
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15th Dec 2015 2:41pm |
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| taazzukcb Member Since: 30 Aug 2013 Location: Derbyshire Posts: 663
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No I'll effects at all, but no noticeable gain either day to day, I just know it's a lot stronger.
It has kicked in a few times in the slippy, but I still engage diff lock as and when required anyway. I dont get reliant on it then. But also I'm sure it's probably kicked in more than I realise to! I personally see them as something to do WHEN yours is gone or is far to slack etc. Or if you plan on putting serious power through with a conversion etc. |
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15th Dec 2015 3:31pm |
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| redline Member Since: 28 Jun 2015 Location: Mountains and Lakes Posts: 221
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@taazzukcb - Did your centre ATB "survive" the MOT brake rollers?
The MOT guys here are an overzealous bunch, and I need to check with them if there is an accepted alternative to the brake rollers... Wouldn't want them upgrade the centre diff to something more robust, only to have it wrecked on the test rig!! |
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19th Jan 2016 5:14pm |
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| mikeh501 Member Since: 07 Jan 2013 Location: United Kingdom Posts: 1142
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In the UK the mot tester will use a tapley meter if you request it. This is a decelerometer which is used in a road test to check the brakes. It's advisable to request it if you have atb diffs or xfer case.
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19th Jan 2016 7:02pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17353
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My MOT tester won't test any full-time 4wd vehicle on rollers, and I certainly wouldn't let anyone test any of my vehicles on the rollers. If they won't agree to the (modern equivalent of a) Tapley meter, take it somewhere else.
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19th Jan 2016 7:22pm |
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3640 
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same with mine takes it for a quick spin DEFENDER 90 TDCI XS,
I hope everyone is well and your land rovers make you happy |
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19th Jan 2016 8:43pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8010  
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i still have one of these ATBs built up by dave A for sale. Cheers
James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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19th Jan 2016 9:44pm |
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| taazzukcb Member Since: 30 Aug 2013 Location: Derbyshire Posts: 663
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I'm pretty sure it did, not had any nasty noises since. Wasn't happy though!
I will be requesting the decelerometer next time. He used it for the handbrake test, but put it on the rollers for brakes. I wasn't happy, but all he said was that his rollers had a 4x4 setting. Didn't seem to grasp the torsion diff. It was all in an emergency really. My usual place I've gone to a few years suddenly decided mine was commercial grade and wouldn't test it. This new place did all the leg work with DVLA to double check it all and they didn't get confirmation until the very last day of the test, so was appreciative of that, just wish they'd of not used rollers! |
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20th Jan 2016 8:57am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17353
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As far as I know with a transmission brake they should test the handbrake when stationary, and not when moving or on rollers.
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20th Jan 2016 9:25am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17353
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This seems to be a widespread issue at the moment. DVSA has confirmed to me that a standard Defender (ie one which legally falls into the Dual Purpose Vehicle definition under the C&U Regs, which all except overwieght things like cherry-pickers should do) should be tested as Class IV vehicles. Howoever due to (a) misleading information distributed by DVSA to MOT Testers in the last few years, and (b) a flaw in the registration system which means that vehicle weights are not adequately recorded on the DVSA/DVLA databases, many testers are unaware of this and insist on a Class 7 MOT. I have beencorresponding with DVSA on this subject for about two years, but it takes them 6 months to reply to a letter! |
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20th Jan 2016 9:31am |
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| taazzukcb Member Since: 30 Aug 2013 Location: Derbyshire Posts: 663
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Hmm ... interesting! I was back at the test station at that point and found it a bit odd. Absolutely launched the truck then did a 4 wheel drift as he whacked the handbrake on. Sounds like it was done wrong all over then. Very nice chap and wanted to help no end, but worried now! |
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20th Jan 2016 9:51am |
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| taazzukcb Member Since: 30 Aug 2013 Location: Derbyshire Posts: 663
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Mines also a DC, and rated at 3050 which is why my usual place insisted on Class 7.
Like you say there's Dual-Purpose which a lot believe is now scrapped I think. All a bit more confusing with the system changing from the Siemens set-up and as per usual, not working 100%! |
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20th Jan 2016 9:52am |
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