phat_20 Posted September 26, 2010 Report Share Posted September 26, 2010 Hey Guys, I've purchased a KE20 diff center to replace my existing locked diff for Rego. I noticed that the connection from the tail shaft uni-joint is a rectangle on my existing center and the new diff center is has a circle. I'm assuming that one is a Jap center and the other is an aussie center. (I think rectangle flange is aussie and the circle one is jap). After reading this I thought that the the Jap and Aussie diffs were interchangeable in each others housing. I gave it a go but it seems like the assumed jap center wouldn't sit in the housing correctly. Its like its hitting a small lip inside the housing (siting out by about 5mm). Has any one had this issue before? Cheers for all the feedback in advance. Quote Link to comment Share on other sites More sharing options...
PMP020 Posted September 26, 2010 Report Share Posted September 26, 2010 try swapping the flange's ? might be easier than swapping the entire centre. cheers, scott Quote Link to comment Share on other sites More sharing options...
phat_20 Posted September 26, 2010 Author Report Share Posted September 26, 2010 (edited) C Edited September 26, 2010 by phat_20 Quote Link to comment Share on other sites More sharing options...
phat_20 Posted September 26, 2010 Author Report Share Posted September 26, 2010 The flange isn't the problem. The actual replacement center isn't fitting in the diff housing on the car correctly. I thought the different flanges may make it easier to define the differences between a jap and Aussie diff center. Cheers Quote Link to comment Share on other sites More sharing options...
Tally Posted September 26, 2010 Report Share Posted September 26, 2010 I'm not expert on diffs but looks like you have two front loading diff centers which means jap banjo diff. May be the different flanges are because of auto and manual tail-shafts maybe? Quote Link to comment Share on other sites More sharing options...
phat_20 Posted September 26, 2010 Author Report Share Posted September 26, 2010 Nice one Tally, but is there a difference between a manual and auto diff? I would say the ratios would be different but the physical shape of the diff center should be the same. Quote Link to comment Share on other sites More sharing options...
Felix Posted September 26, 2010 Report Share Posted September 26, 2010 Both are jap diffs. Aussie Borg Warner diffs are NOT front loaders, and have an inspection plate at the rear of the diff housing. One would be an early 5.7" diff (std in jap-diffed ke1x and early ke2x) The other a 6" centre, which was std in jap-diffed late ke2x through ke3x models. The 5.7" and 6" refer to the ring gear diameter. The pinion flange is different between the two, but the end piece of the driveshaft can be changed over with a new uni joint to suit. I'm not sure why it won't fit in, maybe you are not holding your mouth right. :) For the record my 5k ke15 has a ke35 6" 4.33:1 centre in it atm, used to run a ke36 6" 4.55:1 centre previously when I had a 4k. Quote Link to comment Share on other sites More sharing options...
phat_20 Posted September 27, 2010 Author Report Share Posted September 27, 2010 Cheers for the info Felix Quote Link to comment Share on other sites More sharing options...
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