Metal Sounds From Invidia Gemini Exhaust?

ptrinh301 · 07-18-2019, 02:59 AM

Hi fam,

I just installed the full cat back -Invidia Gemini exhaust for my Z in 5 days.

The sounds is deeper than the stock, of course.

However, I can hear a " metal sounds" from the muffler when I stop the car at the red light, sometimes on the road, but not too loud.

The sounds disappear after a while the car running. I am not sure if that is because the exhaust is still new and in " break in " condition?

The exhaust I bought is brand new, which no damage.

Will the sounds disappear after the break in time? Or I am the only one who have this problem?

crazy4oldcars · 07-18-2019, 08:09 AM

Metal sounds? Like a rattle? Or a grinding sound? A pinging?
Please expand on your description.

Kirk B.

Corsairprime · 07-18-2019, 08:28 AM

Quote:

Originally Posted by ptrinh301

Hi fam,

I just installed the full cat back -Invidia Gemini exhaust for my Z in 5 days.

The sounds is deeper than the stock, of course.

However, I can hear a " metal sounds" from the muffler when I stop the car at the red light, sometimes on the road, but not too loud.

The sounds disappear after a while the car running. I am not sure if that is because the exhaust is still new and in " break in " condition?

The exhaust I bought is brand new, which no damage.

Will the sounds disappear after the break in time? Or I am the only one who have this problem?

I had a similar issue but not the same exhaust. AAM S-Line here. For me this turned out to be a clearance issue around the cross brace in the center of the underbody. A welded stainless piece of bar stock that secures the dual pipes together was vibrating against the brace. I grabbed some spare silicone tubing and wrapped the small stainless bar with it and secured it. My metallic noise abated.

You might check there. Hope this helps.

BettyZ · 07-18-2019, 09:09 AM

Agreed. Put the car up on jacks and once you're sure the exhaust is cold, run your hands over all the piping to check for points of contact. If you have points that contact, you can order some aluminized fiberglass adhesive heat barrier and adhere it to the part of the car contacting the pipes.

Sent from my SM-G955U using Tapatalk

MZ DAIZY · 07-18-2019, 10:19 AM

Quote:

Originally Posted by BettyZ

Agreed. Put the car up on jacks and once you're sure the exhaust is cold, run your hands over all the piping to check for points of contact.

Wow, you took all the fun out of that project!

ptrinh301 · 07-22-2019, 08:05 PM

Quote:

Originally Posted by Corsairprime

I had a similar issue but not the same exhaust. AAM S-Line here. For me this turned out to be a clearance issue around the cross brace in the center of the underbody. A welded stainless piece of bar stock that secures the dual pipes together was vibrating against the brace. I grabbed some spare silicone tubing and wrapped the small stainless bar with it and secured it. My metallic noise abated.

You might check there. Hope this helps.

problem solved! thank you

ptrinh301 · 07-22-2019, 08:06 PM

Quote:

Originally Posted by BettyZ

Agreed. Put the car up on jacks and once you're sure the exhaust is cold, run your hands over all the piping to check for points of contact. If you have points that contact, you can order some aluminized fiberglass adhesive heat barrier and adhere it to the part of the car contacting the pipes.

Sent from my SM-G955U using Tapatalk

thanks for the tips!

07-18-2019, 02:59 AM	#1 (permalink)
ptrinh301 Base Member Join Date: Oct 2015 Location: orange county Posts: 21 Drives: 2015 370Z Touring Rep Power: 425	Metal Sounds From Invidia Gemini Exhaust? Hi fam, I just installed the full cat back -Invidia Gemini exhaust for my Z in 5 days. The sounds is deeper than the stock, of course. However, I can hear a " metal sounds" from the muffler when I stop the car at the red light, sometimes on the road, but not too loud. The sounds disappear after a while the car running. I am not sure if that is because the exhaust is still new and in " break in " condition? The exhaust I bought is brand new, which no damage. Will the sounds disappear after the break in time? Or I am the only one who have this problem?

07-18-2019, 09:09 AM	#4 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 37 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684371	Agreed. Put the car up on jacks and once you're sure the exhaust is cold, run your hands over all the piping to check for points of contact. If you have points that contact, you can order some aluminized fiberglass adhesive heat barrier and adhere it to the part of the car contacting the pipes. Sent from my SM-G955U using Tapatalk __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

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07-18-2019, 08:09 AM	#2 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28413	Metal sounds? Like a rattle? Or a grinding sound? A pinging? Please expand on your description. Kirk B.