legoman Posted February 16, 2011 Author Share Posted February 16, 2011 So the plan is to extract a mates C52, which has only done 120k, and slap an lsd into it. This will hopefully save me the replacement bearing kit and new synchro plus I will retain the arm and leg I would need to exchange for them. Is there a better place to procure an appropriate lsd? Hope to be mostly doing motorkhana/speed events and track days etc, what one will best suit do we think then? Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 16, 2011 Share Posted February 16, 2011 Clutch type will be best for most applications, but TORSEN doesn't have wearing parts so will last longer if treated well. The only issue with torsen is that they let go in low speed/static/wheel lift situations, but those shouldn't be an issue in an AW. Scour trademe for c series diffs everyday. Quote Link to comment Share on other sites More sharing options...
legoman Posted February 16, 2011 Author Share Posted February 16, 2011 doesn't have wearing parts so will last longer if treated well. Was I putting an lsd in to treat it well? Quote Link to comment Share on other sites More sharing options...
Simon Posted February 16, 2011 Share Posted February 16, 2011 Torsion does have wearing parts. Viscous doesn't... That's why I bought one cos I plan on not treating it well haha. Quote Link to comment Share on other sites More sharing options...
legoman Posted February 16, 2011 Author Share Posted February 16, 2011 Is there a better place to procure an appropriate lsd? other than trademe? Quote Link to comment Share on other sites More sharing options...
Simon Posted February 16, 2011 Share Posted February 16, 2011 Is there a better place to procure an appropriate lsd? other than trademe? http://auctions.yahoo.co.jp/ Or Toyota NZ. Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 16, 2011 Share Posted February 16, 2011 Torsion does have wearing parts.Viscous doesn't... That's why I bought one cos I plan on not treating it well haha. What are you talking about? Torsen is made up of helical gears that only wear out if they break/run out of oil, viscous has shims that wear out over time. Quote Link to comment Share on other sites More sharing options...
Simon Posted February 16, 2011 Share Posted February 16, 2011 gears Yes, they wear out. Viscous has no parts that are in direct contact. It's like an automatic torque converter. It relies on the special viscous oil to do the work. Search viscous fluid and you get something like "Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress". With the special diff oil you end up with a fluid that will let a certain amount of slip happen but then lock solid once said limit is exceeded. The only thing that wears is the oil and that is cheap when compared to the time and parts it takes to change a clutch LSD. Clutch type is the go though. Extra for experts: Mix corn flower with water and be bewildered at how you can manipulate it. Quote Link to comment Share on other sites More sharing options...
legoman Posted February 16, 2011 Author Share Posted February 16, 2011 http://auctions.yahoo.co.jp/ This was less than useful btw Mr toyota man was reluctant to price 1st time round http://trdparts.jp/english/parts_lsd_mechanical.html like this then gears Yes, they wear out. Viscous has no parts that are in direct contact. It's like an automatic torque converter. It relies on the special viscous oil to do the work. Search viscous fluid and you get something like "Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress". With the special diff oil you end up with a fluid that will let a certain amount of slip happen but then lock solid once said limit is exceeded. The only thing that wears is the oil and that is cheap when compared to the time and parts it takes to change a clutch LSD. Clutch type is the go though. Extra for experts: Mix corn flower with water and be bewildered at how you can manipulate it. Yep, what he said................ my brain hurts........ too much learnding today Quote Link to comment Share on other sites More sharing options...
Simon Posted February 16, 2011 Share Posted February 16, 2011 http://auctions.yahoo.co.jp/ This was less than useful btw http://page19.auctions.yahoo.co.jp/jp/a ... x122786551 http://page22.auctions.yahoo.co.jp/jp/auction/l60399192 http://page22.auctions.yahoo.co.jp/jp/auction/l68785729 http://page8.auctions.yahoo.co.jp/jp/auction/h145532813 http://page17.auctions.yahoo.co.jp/jp/a ... v143727379 http://page9.auctions.yahoo.co.jp/jp/auction/k136357117 You're doing it wrong. Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 16, 2011 Share Posted February 16, 2011 Differential motion forces the interleaved discs to move through the fluid against each other. In some viscous couplings when speed is maintained the fluid will accumulate heat due to friction. This heat will cause the fluid to expand, and expand the coupler causing the discs to be pulled together resulting in a non-viscous plate to plate friction and a dramatic drop in speed difference. any sustained load which overheats the silicone results in sudden permanent loss of the differential effect.[4] They do have the virtue of failing gracefully, reverting to semi-open differential behaviour. Typically a visco-differential that has covered 60,000 miles (97,000 km) or more will be functioning largely as an open differentia Sounds gay. You won't find an VLSD for C series anyway, so stop these points are pointless . Quote Link to comment Share on other sites More sharing options...
Simon Posted February 16, 2011 Share Posted February 16, 2011 Too true. VLSD is the only way to go if I plan on doing VLSD's at every intersection though. I even had the choice of a clutch type for no extra charge. 97,000k sheesh. Good thing is changing the viscosity of the oil / tightness of the LSD takes about 3 mins. Dad said he used helicopter gearbox oil for mad lock diff but not even stz. Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 16, 2011 Share Posted February 16, 2011 lol. If they don't wear, then why do nissan owners need to slam extra shims to re-tighten old VLSDs? Quote Link to comment Share on other sites More sharing options...
legoman Posted February 16, 2011 Author Share Posted February 16, 2011 http://auctions.yahoo.co.jp/ This was less than useful btw http://page19.auctions.yahoo.co.jp/jp/a ... x122786551 http://page22.auctions.yahoo.co.jp/jp/auction/l60399192 http://page22.auctions.yahoo.co.jp/jp/auction/l68785729 http://page8.auctions.yahoo.co.jp/jp/auction/h145532813 http://page17.auctions.yahoo.co.jp/jp/a ... v143727379 http://page9.auctions.yahoo.co.jp/jp/auction/k136357117 You're doing it wrong. nah ah. You forgot to teach me to read japanese silly. Also, gimme 90,000 yen for the mechanical one You won't find an VLSD for C series anyway, so stop these points are pointless . http://trdparts.jp/english/parts_lsd_mechanical.html like this then Only one not discontinued apparently, is that the torsen one? Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 16, 2011 Share Posted February 16, 2011 http://trdparts.jp/english/parts_lsd_mechanical.html like this thenOnly one not discontinued apparently, is that the torsen one? "Mechanical" = plate type. The outer plates you can see are the clutch plates that grab and release. Quote Link to comment Share on other sites More sharing options...
legoman Posted February 16, 2011 Author Share Posted February 16, 2011 I have read too many articles tonight. I think I should be getting a plate type then. Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 16, 2011 Share Posted February 16, 2011 Plate/mechanical/clutch are all the same thing. Torsen/helical/ATB are all the same too. You can get Quaife ATB's brand new in NZ - they're expensive but available. Quote Link to comment Share on other sites More sharing options...
Simon Posted February 16, 2011 Share Posted February 16, 2011 Yep, get clutch if you can. I only got viscous over clutch because I plan on doing some serious driving and am too poor to replace / re shim / rebuild a clutch LSD in E series. Markku, you should find both our vids from the Tui. Perfect comparison between open and clutch. I = understeer into oblivion, you = hektix oversteer. I still won. Quote Link to comment Share on other sites More sharing options...
Truenotch Posted February 16, 2011 Share Posted February 16, 2011 K. Clutch LSD Open Quote Link to comment Share on other sites More sharing options...
kpr Posted February 17, 2011 Share Posted February 17, 2011 +1 for clutch type. i doubt you will do enough driving/ abuse to wear the plates out. if you're giving it death shouldn't get wear anyway, as it should lock up. worst case is if you managed to get it to open wheel under power. but in that case its setup wrong or stuffed anyway Quote Link to comment Share on other sites More sharing options...
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