Exhaust hanger failure? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

gcranston · 09-15-2021, 02:44 PM

I dropped my exhaust coming through the Watkins Glen Bus stop. Three aftermarket PU hangers of unknown provenance had gotten hot, stretched, cracked, then failed completely. Thereafter the two remaining (autozone) hangers failed. Mechanics wire got me through the rest of the event, and the drive home.

Trying to decide whether OEM hangers will be enough or if I should take this opportunity to reinforce. Anyone else have issues to report or recommendations?

Thanks.

Yoshoobaroo · 09-15-2021, 02:54 PM

Maybe try an aftermarket one from a big name? The Cusco 12mm ones fit really nice and snug on my Greddy catback. MUCH tighter than the oem ones.

StraightOuttaCanadaEh · 09-15-2021, 03:19 PM

I use the Subaru JDM hangers which I got from Blackhawkjapan

Haven't heard much about the Perrin hangers but they're also available

MX-5RACER · 09-15-2021, 07:27 PM

Stay away from the urethane hangers, they get hot and fail. I had this happen on my track Miata and it caused my header to crack as the entire weight of the exhaust was hanging on the header. That drive home SUCKED! It was basically an open header and I had to drive from Sebring home to Ft. Lauderdale (2.5 hours). I had to stop and get ear plugs.

Ultramaroon · 09-15-2021, 07:49 PM

I haven't heard of this. So weird. Is all the tension on one hanger even though the others are all engaged? That could do it.

...or yeah, urethane

Yoshoobaroo · 09-15-2021, 09:15 PM

My problem with the Greddy catback on the stock hangers was that the little bumps at the ends of the hanger rods were way too small to not slip through the OEM hangers in turns. I ended up putting some hose clamps on the rod ends until the Cusco mounts came in.

femaledog · 09-15-2021, 09:55 PM

https://www.ft86club.com/forums/showthread.php?t=72867

Never happened to me, but I hope it won't.

ZDan · 09-16-2021, 07:29 AM

I'm still on factory exhaust hangers at 56k miles and buncha track days.

Weren't your hangers a somewhat misaligned with the exhaust? That could be the root cause...

I think at some point, possibly between 2013 and 2015, relative positions of hangers may have changed a bit so possibly related to 2015 engine swap? Guessing here...

You should post up pics of drive axle boot repair if you have em!

Great that we both made the TT and drive home despite "issues"

gcranston · 09-16-2021, 10:04 AM

Quote:

Originally Posted by femaledog

https://www.ft86club.com/forums/showthread.php?t=72867

Never happened to me, but I hope it won't.

Yeah I saw that post too. The E-clips aren't a terrible idea, but my problem wasn't the hangers falling off; they actually tore.

Thanks.

gcranston · 09-16-2021, 10:07 AM

Quote:

Originally Posted by ZDan

I'm still on factory exhaust hangers at 56k miles and buncha track days.

Weren't your hangers a somewhat misaligned with the exhaust? That could be the root cause...

I think at some point, possibly between 2013 and 2015, relative positions of hangers may have changed a bit so possibly related to 2015 engine swap? Guessing here...

You should post up pics of drive axle boot repair if you have em!

Great that we both made the TT and drive home despite "issues"

Yeah, a little more excitement than I'd like. For the confused readers out there, what I didn't mention in the original post was that the exhaust ripped a hole in the CV boot on it's way down/drag back to the pits. Turns out I have spare axels from the rebuild so that shouldn't be an expensive fix.

I do need a section of exhaust pipe welded in to replace the flat-spotted part and I figure that can just be made a little longer to fix the hanger alignment. Collecting quotes...

gcranston · 09-16-2021, 10:08 AM

Quote:

Originally Posted by Ultramaroon

I haven't heard of this. So weird. Is all the tension on one hanger even though the others are all engaged? That could do it.

...or yeah, urethane

It was the polyurethane ones that failed first.

gcranston · 09-16-2021, 10:08 AM

Quote:

Originally Posted by StraightOuttaCanadaEh

I use the Subaru JDM hangers which I got from Blackhawkjapan

Haven't heard much about the Perrin hangers but they're also available

Those look beefy. I'm intrigued...

StraightOuttaCanadaEh · 09-16-2021, 10:35 AM

Quote:

Originally Posted by gcranston

Those look beefy. I'm intrigued...

they feel just as beefy as the stock ones, but the thing in the middle does a good job of absorbing vibrations and reducing drone being telegraphed to the cabin. Noticeable difference. I replaced all 5

Opie · 09-16-2021, 11:45 AM

Quote:

Originally Posted by ZDan

You should post up pics of drive axle boot repair if you have em!

I'll be doing a full boot replacement and repack video next week.

09-15-2021, 02:44 PM	#1
gcranston Senior Member Join Date: Nov 2015 Drives: 2015 Subaru BRZ Limited DGM Location: Boston MA Posts: 392 Thanks: 29 Thanked 55 Times in 38 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Exhaust hanger failure? I dropped my exhaust coming through the Watkins Glen Bus stop. Three aftermarket PU hangers of unknown provenance had gotten hot, stretched, cracked, then failed completely. Thereafter the two remaining (autozone) hangers failed. Mechanics wire got me through the rest of the event, and the drive home. Trying to decide whether OEM hangers will be enough or if I should take this opportunity to reinforce. Anyone else have issues to report or recommendations? Thanks.

09-15-2021, 03:19 PM	#3
StraightOuttaCanadaEh Wes Join Date: Feb 2017 Drives: Artisan Spirits '17 86 Location: Toronto Posts: 2,871 Thanks: 1,255 Thanked 1,734 Times in 1,025 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	I use the Subaru JDM hangers which I got from Blackhawkjapan Haven't heard much about the Perrin hangers but they're also available __________________ Instagram: @gt86ws

09-15-2021, 07:27 PM	#4
MX-5RACER Member Join Date: Sep 2017 Drives: 1999 Miata Location: S. FL Posts: 84 Thanks: 8 Thanked 41 Times in 30 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Stay away from the urethane hangers, they get hot and fail. I had this happen on my track Miata and it caused my header to crack as the entire weight of the exhaust was hanging on the header. That drive home SUCKED! It was basically an open header and I had to drive from Sebring home to Ft. Lauderdale (2.5 hours). I had to stop and get ear plugs. __________________ DJ 1999 Miata VVT swap "Maggie" 2013 BRZ "Nancy-Drew BRZ"

09-15-2021, 07:49 PM	#5
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1117 Post(s) Tagged: 9 Thread(s)	I haven't heard of this. So weird. Is all the tension on one hanger even though the others are all engaged? That could do it. ...or yeah, urethane __________________ service manuals

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09-15-2021, 09:55 PM	#7
femaledog Member Join Date: Sep 2017 Drives: 2017 BRZ Perf. Pkg. Location: NYC Posts: 70 Thanks: 95 Thanked 33 Times in 25 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	https://www.ft86club.com/forums/showthread.php?t=72867 Never happened to me, but I hope it won't.

09-16-2021, 07:29 AM	#8
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,672 Thanks: 1,439 Thanked 4,011 Times in 2,097 Posts Mentioned: 85 Post(s) Tagged: 0 Thread(s)	I'm still on factory exhaust hangers at 56k miles and buncha track days. Weren't your hangers a somewhat misaligned with the exhaust? That could be the root cause... I think at some point, possibly between 2013 and 2015, relative positions of hangers may have changed a bit so possibly related to 2015 engine swap? Guessing here... You should post up pics of drive axle boot repair if you have em! Great that we both made the TT and drive home despite "issues"

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