Motordyne ART pipes and factory cat brace...

ChopsZ · 03-07-2017, 10:03 PM

So a few weeks back, I finally installed my ART pipes that I've had sitting for months.

Anyway, when remounting the stock cross brace for the cats/test pipes, we had to force the mounting holes on the brace to line up properly with the mounting tabs on the ART pipes. The right pipe was pretty close, but the left one was off by about a half inch. We got it to fit though.

Ever since, when I take off in 1st gear pretty aggressively, I get a rather loud creaking sound coming from the bottom of the car, heard through the floor. I'm guessing it has to do with that cross brace, being a bit "torqued" so to speak and the movement of the engine on launch.

Anybody else experience this with their ART pipes or any other test pipes that use mounting tabs and that cross brace? If so, did you do anything to stop it?

It's really quite annoying.

Jayhovah · 03-07-2017, 10:05 PM

Remove the brace, it's not necessary with test pipes since they are quite a bit lighter than the OEM cats. I've had two pairs of test pipes and neither had tabs for the brace.

ChaseZ · 03-07-2017, 10:06 PM

Seems every ART pipe has those flanges in a slightly different location, or missing them altogether. Did you buy them new from Motordyne? Give them a car they will give you a shipping label to send them back to fix it. Sucks, but beyond paying someone local to do it that's about the only option other than just leaving that cross brace off.

ChaseZ · 03-07-2017, 10:06 PM

Quote:

Originally Posted by Jayhovah

Remove the brace, it's not necessary with test pipes since they are quite a bit lighter than the OEM cats. I've had two pairs of test pipes and neither had tabs for the brace.

I just left the brace off too.

ChopsZ · 03-07-2017, 10:23 PM

If it's safe to run without the brace, then I'll do that. The only reason I reinstalled it is because of older threads that I read where the test pipes were failing due to the weight of the exhaust hanging on it... Which I thought was kind of odd honestly.

ChopsZ · 03-07-2017, 10:23 PM

Thanks guys for the quick response and advise!

ChaseZ · 03-07-2017, 10:38 PM

Quote:

Originally Posted by ChopsZ

If it's safe to run without the brace, then I'll do that. The only reason I reinstalled it is because of older threads that I read where the test pipes were failing due to the weight of the exhaust hanging on it... Which I thought was kind of odd honestly.

Can only speak for my own experience but I ran that setup all last summer with no trouble whatsoever.

ChopsZ · 03-07-2017, 10:44 PM

Quote:

Originally Posted by ChaseZ

Can only speak for my own experience but I ran that setup all last summer with no trouble whatsoever.

That's good enough for me! Next time I get it up on a lift, I'll yank that sucker out of there. Less weight = race car LOL

ChaseZ · 03-07-2017, 10:47 PM

Quote:

Originally Posted by ChopsZ

That's good enough for me! Next time I get it up on a lift, I'll yank that sucker out of there. Less weight = race car LOL

Lol that bracket proabaly weighs as much as one art pipe!

Between it and the cats there is some pretty respectable weight savings to be had.

ChopsZ · 03-07-2017, 10:52 PM

Quote:

Originally Posted by ChaseZ

Lol that bracket proabaly weighs as much as one art pipe!

Between it and the cats there is some pretty respectable weight savings to be had.

Not even as much as an ART pipe. It's all aluminum, and freakin' razor sharp edges!

Those cats were ridiculous.

ZontheRocks · 03-26-2018, 03:32 PM

Thread revival:

Chops, what shop are you using for installs? I need my exhaust realigned and could use the expertise of a shop with a lift.

Thanks fellow CFZ member!

Quicksilvers · 03-27-2018, 06:25 AM

I heard about this minor fitment issue before with the Motordyne ART test pipes. I would remove the brace you really don’t need it with test pipes no big deal.

Thyristor · 03-27-2018, 12:55 PM

I also had issues lining up the right ART pipe when i did my install. I managed to torque it in place but if i could do it again i would leave the bracket off. iv noticed that when in certain RPM ranges when engine breaking a vibration occurs and i believe its caused by the ART pipe with the bracket.

03-07-2017, 10:03 PM	#1 (permalink)
ChopsZ Track Member Join Date: May 2016 Location: Central Florida Age: 48 Posts: 965 Drives: 2016 370Z GM 6MT Rep Power: 2300	Motordyne ART pipes and factory cat brace... So a few weeks back, I finally installed my ART pipes that I've had sitting for months. Anyway, when remounting the stock cross brace for the cats/test pipes, we had to force the mounting holes on the brace to line up properly with the mounting tabs on the ART pipes. The right pipe was pretty close, but the left one was off by about a half inch. We got it to fit though. Ever since, when I take off in 1st gear pretty aggressively, I get a rather loud creaking sound coming from the bottom of the car, heard through the floor. I'm guessing it has to do with that cross brace, being a bit "torqued" so to speak and the movement of the engine on launch. Anybody else experience this with their ART pipes or any other test pipes that use mounting tabs and that cross brace? If so, did you do anything to stop it? It's really quite annoying. __________________ She's For Sale! PERFORMANCE: Aero Workz \| Akebono \| BC Racing \| EcuTek \| HKS \| MaxBore \| Motordyne \| Nismo \| RJM \| SPL \| StopTech \| Z1 AUDIO: Arc Audio \| Bazooka \| Helix \| Pioneer \| Stereo Integrity

03-07-2017, 10:06 PM	#3 (permalink)
ChaseZ A True Z Fanatic Join Date: May 2016 Location: Calgary Posts: 3,799 Drives: 16 370z Rep Power: 94682	Seems every ART pipe has those flanges in a slightly different location, or missing them altogether. Did you buy them new from Motordyne? Give them a car they will give you a shipping label to send them back to fix it. Sucks, but beyond paying someone local to do it that's about the only option other than just leaving that cross brace off. ChopsZ likes this.

03-07-2017, 10:23 PM	#5 (permalink)
ChopsZ Track Member Join Date: May 2016 Location: Central Florida Age: 48 Posts: 965 Drives: 2016 370Z GM 6MT Rep Power: 2300	If it's safe to run without the brace, then I'll do that. The only reason I reinstalled it is because of older threads that I read where the test pipes were failing due to the weight of the exhaust hanging on it... Which I thought was kind of odd honestly. __________________ She's For Sale! PERFORMANCE: Aero Workz \| Akebono \| BC Racing \| EcuTek \| HKS \| MaxBore \| Motordyne \| Nismo \| RJM \| SPL \| StopTech \| Z1 AUDIO: Arc Audio \| Bazooka \| Helix \| Pioneer \| Stereo Integrity

03-07-2017, 10:23 PM	#6 (permalink)
ChopsZ Track Member Join Date: May 2016 Location: Central Florida Age: 48 Posts: 965 Drives: 2016 370Z GM 6MT Rep Power: 2300	Thanks guys for the quick response and advise! __________________ She's For Sale! PERFORMANCE: Aero Workz \| Akebono \| BC Racing \| EcuTek \| HKS \| MaxBore \| Motordyne \| Nismo \| RJM \| SPL \| StopTech \| Z1 AUDIO: Arc Audio \| Bazooka \| Helix \| Pioneer \| Stereo Integrity

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03-26-2018, 03:32 PM	#11 (permalink)
ZontheRocks Track Member Join Date: Mar 2017 Location: Central Florida Posts: 934 Drives: 2016 Nissan PW 370Z Rep Power: 33079	Thread revival: Chops, what shop are you using for installs? I need my exhaust realigned and could use the expertise of a shop with a lift. Thanks fellow CFZ member!

03-27-2018, 06:25 AM	#12 (permalink)
Quicksilvers A True Z Fanatic Join Date: May 2017 Location: Atlanta, GA Posts: 2,039 Drives: 2017 370z Rep Power: 25462	I heard about this minor fitment issue before with the Motordyne ART test pipes. I would remove the brace you really don’t need it with test pipes no big deal.

03-27-2018, 12:55 PM	#13 (permalink)
Thyristor Base Member Join Date: Apr 2016 Location: Pennsylvania Age: 30 Posts: 61 Drives: 2011 370z Nismo Rep Power: 8	I also had issues lining up the right ART pipe when i did my install. I managed to torque it in place but if i could do it again i would leave the bracket off. iv noticed that when in certain RPM ranges when engine breaking a vibration occurs and i believe its caused by the ART pipe with the bracket.

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