MONKEYmark Posted February 6, 2004 Share Posted February 6, 2004 hi just been to pick my spare UK auto box up and guy who is fitting my UK LSD was saying he does not think it is an LSD, when you turn the LSD it turns the other side the opposite way. the part is off a UK twin turbo. i was wanting to know if it is LSD or does it work that way? the guy was showing me a cossie lsd when you turn it both sides go the same way. its not getting fitted till monday onwards as i have to take my auto box to chris wilsons in morning then take back to oldaham where my supra is getting box and tc and uk lsd fitted. just wanted to pick your brains as to how the LSD works, also do all UK supras have LSD as standard with my non LSD diff in supra, could i buy a TRD LSD and convert my standard jap diff to a TRD LSD. or would it be worth getting jap diff locked up to try for dragstrip, knowing it will be no good on corners? thanks for any help or info Quote Link to comment Share on other sites More sharing options...
dude Posted February 6, 2004 Share Posted February 6, 2004 Originally posted by MONKEYmark hi just been to pick my spare UK auto box up and guy who is fitting my UK LSD was saying he does not think it is an LSD, when you turn the LSD it turns the other side the opposite way. the part is off a UK twin turbo. i was wanting to know if it is LSD or does it work that way? the guy was showing me a cossie lsd when you turn it both sides go the same way. its not getting fitted till monday onwards as i have to take my auto box to chris wilsons in morning then take back to oldaham where my supra is getting box and tc and uk lsd fitted. just wanted to pick your brains as to how the LSD works, also do all UK supras have LSD as standard with my non LSD diff in supra, could i buy a TRD LSD and convert my standard jap diff to a TRD LSD. or would it be worth getting jap diff locked up to try for dragstrip, knowing it will be no good on corners? thanks for any help or info Dont panic dude , they dont work like that , only way to tell is off the chassis plate or with yer right foot !!!! Dude Quote Link to comment Share on other sites More sharing options...
Branners Posted February 6, 2004 Share Posted February 6, 2004 yep, the LSD basically needs resistance to work, so just turning it means you cant tell. opening up the diff would tell you, and if its got the oil cooler coming out of it then its a UK diff which means its LSD. JB Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted February 6, 2004 Author Share Posted February 6, 2004 thanks lads the uk lsd is what i bought off ibrar not got a diff cooler so will it be best to just loop it through. got loads of new motil gear 300 fluid to put in too. thanks for that info Quote Link to comment Share on other sites More sharing options...
Matt B Posted February 6, 2004 Share Posted February 6, 2004 What should the chassis plate read if it's got LSD??? Quote Link to comment Share on other sites More sharing options...
Branners Posted February 6, 2004 Share Posted February 6, 2004 not sure if it applies to the facelifts (but it might do), if you check the axle code then the last letter needs to be a 'B'. If its an 'A' as in A02A then its a non-LSD diff. JB Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted February 6, 2004 Author Share Posted February 6, 2004 same plate on facelifts A02A is non lsd noticed the uk plates look different to jap plates Quote Link to comment Share on other sites More sharing options...
Branners Posted February 6, 2004 Share Posted February 6, 2004 yep, I think the UK spec axle code ends in a D or something like that. JB Quote Link to comment Share on other sites More sharing options...
Terminator Posted February 6, 2004 Share Posted February 6, 2004 It is really important that you get sight of donor information when buying second hand diffs. With JDM diffs there is no way to tell them apart. The casings have identical cast marks and the white painted characters mean SWFA to most of us. UK’s are more obvious. When I had both of my JDM diffs side by side on the garage floor there was no difference in the feel of the diffs. As said above the LSD only shows that it allows only limited slip of one wheel when torque is supplied. You will certainly know if it is and LSD when you drive it:D Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted February 6, 2004 Author Share Posted February 6, 2004 Originally posted by Terminator It is really important that you get sight of donor information when buying second hand diffs. With JDM diffs there is no way to tell them apart. The casings have identical cast marks and the white painted characters mean SWFA to most of us. UK’s are more obvious. When I had both of my JDM diffs side by side on the garage floor there was no difference in the feel of the diffs. As said above the LSD only shows that it allows only limited slip of one wheel when torque is supplied. You will certainly know if it is and LSD when you drive it:D hi mate looking forward to it been back on road again. been a passenger in mates uk tt and he was at ease throwing car about. was snaking too and he knew what he was doing. seems like forever getting it back together. will let you know if it feels any different to me. taking my uk auto box to get internal pump out to put in my jap box then my torque convertor has been done and lsd will be fitted from monday onwards. might take the jap diff apart to see how it works Quote Link to comment Share on other sites More sharing options...
Ibrar Jabbar Posted February 6, 2004 Share Posted February 6, 2004 Mark, Trust me it's a UK LSD otherwise I wouldn't have advertised and sold it as one. Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted February 6, 2004 Author Share Posted February 6, 2004 Originally posted by Ibrar Jabbar Mark, Trust me it's a UK LSD otherwise I wouldn't have advertised and sold it as one. hi mate iam not saying its not, the guy just put a bit of dought in my mind. its all sorted now. just happy to be up n running again soon thanks for all help Quote Link to comment Share on other sites More sharing options...
Ibrar Jabbar Posted February 6, 2004 Share Posted February 6, 2004 Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 7, 2004 Share Posted February 7, 2004 If in doubt it's pretty trivial for anyone to pull the cover off and look inside, whre it's easy to tell at a galance if it has an LSD inn side. The UK LSD is very loosely set up, for serious trackday or drag strip usage a TRD plate type is far better, and for drag strip ONLY (trailered car) a spool is the best, whereby the drive is locked direct to both back wheels. A spool is dangerous and a liability in a road driven car though. I can convert both UK and J-Spec diffs to spool for the comitted I can also rebuild diffs with the TRD internals, or any internals you like that are available. Quote Link to comment Share on other sites More sharing options...
Thorin Posted February 7, 2004 Share Posted February 7, 2004 Is there any difference in the operation of the UK and J-Spec diff's? Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted February 15, 2004 Author Share Posted February 15, 2004 hi heres an update on the UK lsd into a JAP supra guy has just rang me up. he has fitted my gearbox and torque convertor. and sorted out a new battery with bigger uk style terminals as my battery died. he has got round to fittng lsd and ran into problems, its about 1" too long. he was saying it looks like i will need a uk propshaft to fit it right. but he is going to modify the jap propshaft so it fits. in the meantime i can get hold of a uk propshaft, i dont mind getting the jap propshaft modified if it works out. he said the lsd bolts up ok, he just had trouble with fitting propshaft. just thought i would let you know. hopefully should have it back tonight. is there much difference between a uk lsd to a jap lsd. i mean gearing. Quote Link to comment Share on other sites More sharing options...
adi Posted February 15, 2004 Share Posted February 15, 2004 on a related subject.. which is better for normal road use.. Torsen or conventional LSD? Quote Link to comment Share on other sites More sharing options...
TLicense Posted February 15, 2004 Share Posted February 15, 2004 Originally posted by Chris Wilson I can also rebuild diffs with the TRD internals, or any internals you like that are available. Chris, What would the likely cost be of removing my j-spec auto non-LSD diff, and refitting it with TRD LSD. That's if it's possible. Would it be better for me to get a manual diff for the transfer? If so could you supply that and how much would the all in figure for this be? Many thanks Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 15, 2004 Share Posted February 15, 2004 It's only the rear half of the propshaft that needs changing, you an split it at the centre bearing. Quote Link to comment Share on other sites More sharing options...
TLicense Posted February 16, 2004 Share Posted February 16, 2004 Monkey, From what I've read you'll also need one of the drive shafts. the left hand side IIRC. Check it out on the auto-6 speed conversion on mkiv.com Chris, Any word on the costs of a TRD LSD with fitting? Cheers Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 16, 2004 Share Posted February 16, 2004 Originally posted by TLicense Monkey, From what I've read you'll also need one of the drive shafts. the left hand side IIRC. Check it out on the auto-6 speed conversion on mkiv.com Chris, Any word on the costs of a TRD LSD with fitting? Cheers I wouldn't want to get involved sourcing the LSD itself, so it would be the cost of that plus fitting and re setting up the diff. I have never done a MKIV diff before, but reckon on 4 hours, about 160 quid, plus any bearings and spacers that might need renewing. That's assuming you just brought me the original diff on its own. If you brouht the whole car add another 100 quid to remove and replace the diff assembly. Quote Link to comment Share on other sites More sharing options...
400BHP Posted February 16, 2004 Share Posted February 16, 2004 Chris, do people drive cars with a locked diff on the road? surely it would make cornering rather difficult to say the least and tyres wouldn't last long.... Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 16, 2004 Share Posted February 16, 2004 Only a totally drag race orientated nutter would drive a locked diff on the road. I know a coupl of people who just drive to say santa Pod with one, but I don't know anyone who would consder using one as an everyday part of their car! It would be horrendous, and IMO dangerous, handling would go totally to pot. Quote Link to comment Share on other sites More sharing options...
400BHP Posted February 16, 2004 Share Posted February 16, 2004 Yeah just slightly... Quote Link to comment Share on other sites More sharing options...
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