Just picked up A newer Diff out of an NB and it's a Toshiki Fuji. I've looked around for any info good or bad and only found a couple of things about tabs on the clutch cones coming off. besides that nothing else. Is anybody running these and what are your opinion on them? I have a 92 with original 6" diff so either way this is an improvement for me. Just not alot of talk about them. If it was a torsen I could read about differential specs gears plates clutches ratios all week long but nothing on these that have been in the MX-5 since 02-03.

 

Not a fan--seen too many broken ones.

 

Ask SamAmporful.

I did a lot of research on these when I had one, and decided it's characteristics were what I was looking for. This is completely my own speculation and I'm sure Ben knows better, but it seems that on these if they didn't fail before ~40K miles they will last.

I never installed mine however, and sold it to Sam.

 

the one i got had like 75k miles on it and worked fine when it was in my friends 03 and it worked fine in my car when i was putting around and staying out of boost to do some tuning in my car. when i decided it was time to hit a lil boost thats when the ****** started whining like a lil bitch!