Throw out bearing comparison old vs new - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Trueweltall · 07-28-2018, 01:13 PM

Old #30502AA051, New #30502AA150.

CoolHandMoss · 07-28-2018, 02:09 PM

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!

VerusEric · 07-28-2018, 02:37 PM

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

CoolHandMoss · 07-28-2018, 02:44 PM

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.

Trueweltall · 07-28-2018, 06:55 PM

Quote:

Originally Posted by VerusEric

but I'd rather replace a $25 TOB

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

VerusEric · 07-29-2018, 10:13 AM

Quote:

Originally Posted by CoolHandMoss

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.

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.

Quote:

Originally Posted by Trueweltall

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

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

Irace86.2.0 · 07-29-2018, 10:33 AM

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.

Stang70Fastback · 07-29-2018, 12:54 PM

Quote:

Originally Posted by CoolHandMoss

I'm surprised there's not more obvious improvement. It must be more a matter material choice and internal structure.

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.

reeves · 07-30-2018, 04:56 PM

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.

humfrz · 07-30-2018, 08:02 PM

Quote:

Originally Posted by reeves

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.

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

humfrz

reeves · 07-31-2018, 10:40 AM

Quote:

Originally Posted by humfrz

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

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.

JimmyMac · 08-01-2018, 01:13 AM

Quote:

Originally Posted by reeves

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.

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.

saikat.saha · 08-01-2018, 02:49 AM

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

Spec C Wannabe · 08-01-2018, 03:57 AM

Quote:

Originally Posted by reeves

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.

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

07-28-2018, 01:13 PM	#1
Trueweltall Senior Member Join Date: Feb 2016 Drives: 2016 Subaru BRZ Location: Florida Posts: 394 Thanks: 91 Thanked 195 Times in 115 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Throw out bearing comparison old vs new Old #30502AA051, New #30502AA150.

07-29-2018, 10:33 AM	#7
Irace86.2.0 Senior Member Join Date: Mar 2017 Drives: Q5 + BRZ + M796 Location: Santa Rosa, CA Posts: 7,883 Thanks: 5,668 Thanked 5,804 Times in 3,299 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	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. __________________ My Build \| K24 Turbo Swap \| K24T BRZ SOLD

08-01-2018, 02:49 AM	#13
saikat.saha Member Join Date: Feb 2017 Drives: Toyota Gt86 2012 orange Location: Bangladesh Posts: 25 Thanks: 2 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	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 Last edited by saikat.saha; 08-01-2018 at 04:11 AM.

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07-28-2018, 02:09 PM	#2
CoolHandMoss Senior Member Join Date: Jan 2018 Drives: 2013 FRS Location: VA Posts: 305 Thanks: 1 Thanked 86 Times in 55 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	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!

07-28-2018, 02:37 PM	#3
VerusEric Join Date: Mar 2015 Drives: BRZ, STI, GT350R, Supra, 987.2 Location: Indiana Posts: 1,146 Thanks: 567 Thanked 2,529 Times in 780 Posts Mentioned: 87 Post(s) Tagged: 3 Thread(s)	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

07-28-2018, 02:44 PM	#4
CoolHandMoss Senior Member Join Date: Jan 2018 Drives: 2013 FRS Location: VA Posts: 305 Thanks: 1 Thanked 86 Times in 55 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	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.

07-30-2018, 04:56 PM	#9
reeves Senior Member Join Date: Jul 2012 Drives: BRZ Location: ATL, GA Posts: 1,021 Thanks: 289 Thanked 397 Times in 265 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	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.

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