np89 Posted August 17, 2014 Share Posted August 17, 2014 I have a UK Auto, which obviously has a UK Diff, however, the Kaaz website seems to suggest this diff will fit in AT cars, but I am not sure if that would include the UK one, does anyone know? Sorry I am a bit ignorant when it comes to gears and drivetrain specifics Thanks Niall Quote Link to comment Share on other sites More sharing options...
makri Posted August 17, 2014 Share Posted August 17, 2014 (edited) I have a UK Auto, which obviously has a UK Diff, however, the Kaaz website seems to suggest this diff will fit in AT cars, but I am not sure if that would include the UK one, does anyone know? Sorry I am a bit ignorant when it comes to gears and drivetrain specifics Thanks Niall I believe the UK(euro) spec TT auto also has the big diff with big flange, but its not the same gear ration as the 6spd euro spec TT auto 3.538:1 euro spec TT 6spd 3.266:1 The big flange is 220mm / 12 bolt ring gear Edit: Or do you have NA? Edited August 17, 2014 by makri (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 17, 2014 Share Posted August 17, 2014 Why would you want a "2 way" limited slip section? They are for very specialised use and not at all suited to normal road usage. "2 way" in Jap speak means the ramp angles governing how much they lock on acceleration and deceleration are equal. "1.5 way" is what one would use in a road car or normal race car. Quote Link to comment Share on other sites More sharing options...
np89 Posted August 17, 2014 Author Share Posted August 17, 2014 Why would you want a "2 way" limited slip section? They are for very specialised use and not at all suited to normal road usage. "2 way" in Jap speak means the ramp angles governing how much they lock on acceleration and deceleration are equal. "1.5 way" is what one would use in a road car or normal race car. 2 way appears to be the only aftermarket option for auto supras as far as I can see? Though from your response I imagine I am mistaken? Perhaps you could inform me a bit more comprehensively? As I say, my knowledge on the subject is extremely limited. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 17, 2014 Share Posted August 17, 2014 Kaaz certainly DID offer a 1.5 way, but my experience of Kaaz LSD sections is they are pretty crude, noisy and grabby. If the budget allows I would go with a TRD one, or if the budget is very healthy, an OS Giken LSD section. Both are available for all variants of JZA80 CWP's. I had a Kaaz LSD in my RWD Skyline and it was pretty horrible. For normal road use a TRD is fine, if you have track use in mind, and not drifting, then the Giken is a far FAR better choice. 2 way type ramp angles in rear axles are strictly for loose circuit rallying and "drifting". Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted August 17, 2014 Share Posted August 17, 2014 If the budget allows I would go with a TRD one, or if the budget is very healthy, an OS Giken LSD section. How do these compare from a maintenance point of view? I found the TRD diff, combined with some very sticky rear tyres, to be unshiftable on dry roads. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 17, 2014 Share Posted August 17, 2014 Well, reliable as the TRD one seems to be, it's not adjustable, save by making custom shims and getting them hardened, which I have done a couple of times. When something does wear or break, repair parts seem to be unavailable. Buy another time The stock setting is very normal road usage orientated. Much better than the optional Toyota LSD, but not really that good for track days. The Giken is adjustable, by shim changes, can be ordered with custom ramp angles, and *ALL* parts are available from Giken as individual spares. The actual functionality of the Giken is a lot more high tech than the TRD, and it's found a good foothold in high end race cars. LSD initiated corner entry understeer is all but absent. Mine in my RWD Skyline was worth over a second a lap at Oulton, which doesn't sound much but is the equivalent of a huge amount more BHP. Plus it's benign in the wet and generally joy to drive with. No funny noises, or tyre skip when manoeuvring, either, unlike Cusco and Kaaz LSd sections, which may or may not bother you. Quote Link to comment Share on other sites More sharing options...
Nic Posted August 17, 2014 Share Posted August 17, 2014 Well, reliable as the TRD one seems to be, it's not adjustable, save by making custom shims and getting them hardened, which I have done a couple of times. When something does wear or break, repair parts seem to be unavailable. TRD Japan lists repair kits and shims for their LSD http://trdparts.jp/english/list_jza80.html Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 17, 2014 Share Posted August 17, 2014 Well found Nic! I wonder what's in the repair kit? Quote Link to comment Share on other sites More sharing options...
np89 Posted August 17, 2014 Author Share Posted August 17, 2014 Ok so as helpful as this thread has become, no one has answered my question lol - will this diff fit?? Quote Link to comment Share on other sites More sharing options...
Nic Posted August 17, 2014 Share Posted August 17, 2014 I have a UK Auto, which obviously has a UK Diff, however, the Kaaz website seems to suggest this diff will fit in AT cars, but I am not sure if that would include the UK one, does anyone know? All J-spec autos were factory fitted with the smaller A diff shown here on the right, all UK spec Supras were fitted with the larger B diff left. Kaaz is a Japanese company so if they say it fits all autos I'd assume they are referring to the J-spec auto ie, the smaller A diff (this link seems to back this up http://www.rhdjapan.com/kaaz-lsd-limited-slip-differential-jza80.html ) So if you have the larger B diff fitted on your UK spec, no it won't fit. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 17, 2014 Share Posted August 17, 2014 I think the smaller diameter CWP has an 8.00 inch diameter crown wheel. The bigger CWP has an 8.7 inch crown wheel, you need to find out which diameter crown wheel the kit is for. Auto / manual, and ratio is really irrelevant, the salient point is the diameter of the crown wheel, and if it matches what the kit is designed for. Quote Link to comment Share on other sites More sharing options...
bignum Posted August 17, 2014 Share Posted August 17, 2014 Ive got a 2-way in my track car and find it pretty good, however heal & toe is required in wet weather downshifts to stop the backend locking. Quote Link to comment Share on other sites More sharing options...
np89 Posted March 26, 2015 Author Share Posted March 26, 2015 Just as a bit of revival on this, does anyone know if it is possible to get a 1.5 way equivlent for the UK Spec B04D diff? Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted March 26, 2015 Share Posted March 26, 2015 You can in the TRD lineup I believe as I was presented with two options when ordering mine for my previous track car. I went with the Auto spec for the smaller diff housing as mine was JSpec but I had the option of Auto spec diff for the smaller or larger diff housing. Was very good on track and very predictable when you were being a bit of a loon with the loud peddle. Quote Link to comment Share on other sites More sharing options...
np89 Posted March 26, 2015 Author Share Posted March 26, 2015 but is the large case jap diff the same as the large case uk diff? Quote Link to comment Share on other sites More sharing options...
bignum Posted March 26, 2015 Share Posted March 26, 2015 yes 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.