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Discussion Starter #1 (Edited)
Currently in progress of installing an 87 turbo supra clutch type lsd into my diff housing.

here's the lsd inside the is300 housing with the is300 ring gear. i also installed the weir performance shim kit while i was at it. Clutch plates were not worn at all. everything went smoothly. backlash was checked on the spider gears and the ring and pinion.

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Now heres the fitment issue: inside the holes where the axle half shafts go in there's these things protruding from inside the hole. left side is a different shape and size compared to the right.
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Stock is300 half shafts. left pictured is untouched and the right one is trimmed.
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have any of you guys ran into this issue?
looking to see what i can do before i have to bring these half shafts to the machine shop to get a hole drilled in them to match the protruding pieces which i wont be able to do due to work schedule.




EDIT: i installed the inners backwards. yeah that resolves it..
 

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Yeah I didn't have any issues at all on mine. I just cut the OEM IS300 stub axles on a table saw (approx. 5mm or to the groove) and installed them. I hope you have better luck with the LSD then I did. It's not bad for the street, even with the Weir shims, but not great for drifting on a track. I bought a welded diff from a guy getting rid of his IS300 a yr or two back.
 

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Discussion Starter #3
Yeah I didn't have any issues at all on mine. I just cut the OEM IS300 stub axles on a table saw (approx. 5mm or to the groove) and installed them. I hope you have better luck with the LSD then I did. It's not bad for the street, even with the Weir shims, but not great for drifting on a track. I bought a welded diff from a guy getting rid of his IS300 a yr or two back.
ill see how it goes on the track. i still have my open diff i can weld if it isnt up to par. but i guess anything beats having an open diff
 

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You can pack the LSD with more discs. It takes a few different thicknesses. Just over pack it. It will tighten up more. But a spool or weld diff. Would be quicker to break lose for drifting.
 

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ill see how it goes on the track. i still have my open diff i can weld if it isnt up to par. but i guess anything beats having an open diff
Are you going to be drifting or gripping?

You can pack the LSD with more discs. It takes a few different thicknesses. Just over pack it. It will tighten up more. But a spool or weld diff. Would be quicker to break lose for drifting.
The Weir Performance kit has ~ 6 smooth discs that you're supposed to insert between the existing friction discs. The Stage 2 kit that I got had a smaller spring as well that goes in the existing larger spring for extra force on the discs. In theory it works, but for drifting it's not really that great.
 

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Discussion Starter #6
Are you going to be drifting or gripping?
Mostly dailying, but occasional drifting at the local track. Probably only a few track days in a year. I just finished rebuilding my motor and threw it back in the car. Still breaking in the clutch so I haven't tested out the lsd yet. Ill keep you posted how it performs.

My only experience with lsd is a kazz 2 way on my s14
 
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