Throw out bearing comparison old vs new
 

Old #30502AA051, New #30502AA150.

https://image.ibb.co/mKCEeT/IMG_20180728_125536.jpg
https://image.ibb.co/mD2rR8/IMG_20180728_125601.jpg
https://image.ibb.co/ddbwto/IMG_20180728_125618.jpg
https://image.ibb.co/jSKGto/IMG_20180728_125736.jpg

I'm surprised there's not more obvious improvement. It must be more a matter material choice and internal structure. Cannot believe they're still using plastic on the inside though!

Maybe I'll cut both in half to see if there are differences internally... The TSB states different grease which honestly sounds like it could solve the issue since the bearing degrade. The plastic seems to only overheat once the bearing is going.

IMO, the plastic is to protect the transmission snout. Plastic (w/ a bit of grease) on an aluminum input snout *should* last longer than say, aluminum on aluminum. Granted, the plastic will wear quicker than aluminum; but I'd rather replace a $25 TOB vs. the crank snout (IIRC, they're $120ish). And we're lucky we can actually change that part! Some Subaru transmissions it is part of the casting and it cannot be replaced.

Eric

That would be impressive if the difference was just about the grease. I'm curious to see if you do cut them open. Having had a premature TOB failure on the way home from picking up my new-to-me 13 FR-S, it's a subject that has my attention.

I get your point on the plastic. I had considered that. The plastic likely will hold up fine as long as the throw out bearing does its job correctly. Still, there are plenty of cars with no plastic sleeve that have no problems being all metal and I think a correctly chosen metal would make a higher quality part. It may be that as of now the plastic sleeves have only failed due to excessive heat associated with a bearing failure, but if the updated bearings don't fail so early we may well see the sleeves failing first due to repeated heat cycles if the clutches and throw out bearings are lasting 100k or more like they do on many cars. Too soon to say though.

Where are you getting them that cheap? I paid $44 for the newer TOB.

If the throwout bearing lasts 100k; I'd say that is a pretty solid design. Most clutches last around 100k miles or need changed before then. The TOB should be replaced anytime the clutch is changed IMO. I'll see if I can find some time to crack open two as this has peaked my curiosity.

We sell them on our website with our clutch fork (highly recommended for this platform by the way) for $35 with the TOB clips. I have a connection at a dealership and we order in large quantity.

https://www.verus-engineering.com/pr...30-clutch-fork

I'll see what I can do about getting both cut; I need to figure out the easiest route to go.

Thanks,
Eric

I replaced the snout. Mine was worn. See my build pics. It was like $83-93. Apparently it is just the temperature characteristics of the oil that was changed.

I mean that's not really surprising. The part still has to fit all of the other parts. They can't completely redesign it without changing more parts on the vehicle. So the solution is internal improvements and material changes, as you mentioned.

I just swapped mines out..
The old one from my car looked pretty identical to the new #30502AA150 part.

No real differences it seems, besides the white dot.


https://i.imgur.com/GZR2NLV.jpg


https://i.imgur.com/hauaJ2H.jpg

If the white dot makes that much difference, why didn't they paint a white dot on the original ones ??- :iono:

:eyebulge:


humfrz

Well I have to pull apart my tranny again... Maybe I'll paint a white dot on the old one and re-install it, then we'll find out. :D

Looks different to me. The metal stamping has a bulge ring around the center near the seal vs the old one when it just slops down to the seal. That and a few other things.

Hello guys,

I am not expert. Need your help guys. I bought used 2013 gt86 . Got exedy satge 1 clutch on it. Throwout bearing noise increased so much. I am confused that 1 clutch has different throwout bearing or stock throwout bearing

How many miles were you on the original TOB before you swapped with the new one?