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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 04-04-2016, 08:40 PM   #1
Starkiller
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Tomei titanium front pipe users??

Hello all.

Last year I purchased a Tomei titanium front pipe, which I installed on my car along with the rest of a mainly custom titanium exhaust.

Since then, I have had nothing but problems with this thing. It started to crack at the welds, and I contacted the seller. He replaced it without hesitation, so that was awesome. After some more time on the car, it started to crack on the welds again. This time, I didn't want to mess with shipping and everything, so I said, screw it.

I went to a local shop that has a great reputation for fab work and had it repaired. Along with fixing the weld, he fabbed a spacer out of resin, for the mounting bracket, to soften some of the vibration.

A month later, it starts to crack on the other weld!! What gives? LOL.

Has anyone else had problems like this? I'd like to know if it is the Tomei pipe, or just my setup is too rigid or something and thats what is causing the problem?

Thanks in advance for the help.
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Old 04-04-2016, 08:44 PM   #2
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Last year I purchased a Tomei titanium front pipe, which I installed on my car along with the rest of a mainly custom titanium exhaust.
I suspect your custom exhaust is the cause of your problems.

-alex
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Old 04-05-2016, 12:18 AM   #3
Starkiller
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How so? It uses all stock mounting locations and it is much lighter than stock.
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Old 04-05-2016, 02:43 PM   #4
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Sounds like your custom exhaust is putting undue stress on the welds, or just has bad welds.
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Old 04-05-2016, 03:09 PM   #5
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Which has bad welds? The exhaust or the Tomei pipe? My guess is the Tomei pipe. Which is a little disheartening, because I have used their stuff before with great results. Their reputation for quality has always been great, so it makes me think that they moved their manufacturing to a different location. Outsourcing will ruin the world!! lol
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Old 04-05-2016, 03:21 PM   #6
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How so? It uses all stock mounting locations and it is much lighter than stock.
I don't care about using stock locations. I care about the fact that unless you used the exact same jig as a factory exhaust, any deviation from the OEM setup may be putting too much stress on the front pipe.

How is it bolted together? Is it using the stock donut gasket or a regular bolt/nut? How are your exhaust hangers? How much movement do you have? Did you have to have the custom exhaust at a certain angle to mount it?

A lot of people don't realize why welds on exhausts break in the first place. It's usually because the entire system will break at the weakest point, especially when non-OEM parts are used. The jig used to fab the exhaust is key... and it's also why cheap exhausts fail, because they just buy an existing exhaust and copy the flange/hanger locations instead of actual R&D on a physical car.

-alex

Edit: as for your front pipe problem, it may work fine. I'm just saying that your custom exhaust may be exposing the current weakest link in the system.
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Old 04-25-2016, 08:18 PM   #7
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no problems here and been running the front pipe for over 10,000 miles.. track days too might just be what above posters have stated.
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Old 12-14-2016, 07:16 AM   #8
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Reviving the post, my apologies.
My tomei pipe is cracking on the welds too. stock overpipe and midpipe, hks EL header.

Last edited by troek; 12-16-2016 at 09:43 PM.
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Old 12-16-2016, 12:44 AM   #9
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i am all tomei, from headers to full exhaust and i have no problems.
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Old 12-16-2016, 09:44 PM   #10
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mine gets tracked from time to time, maybe its the heat? im gona get it welded once and if it happens again, ill just get a different one.
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Old 12-18-2016, 02:52 PM   #11
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We haven't experienced any issues with the Tomei FPs, but we have encountered a few units with the some cracking at the weld on the Tomei catbacks which Tomei has been warrantying.
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Old 01-05-2019, 06:01 PM   #12
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Necroing this thread. Complete Tomei exhaust (uel header, op, 80mm front, type 80 rear) in for about a month. Just found a big crack on the rear muffler weld

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