Rattling noise coming from car? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

YgRoshi · 04-21-2019, 09:48 PM

Just changed out entire exhaust system yesterday (Header, Overpipe, Frontpipe, Muffler) and there is some sort of rattling? noise coming from the front of the car whenever I am around 2.3 - 3k RPM. No lights are on, no funny smells, or exhaust leaks after I went back under the car today, even took off the pans and retightened every screw that I tampered with, anyone have any idea what is going on? or do I just desperately need a tune?

Yoshoobaroo · 04-21-2019, 09:57 PM

The header will make the engine sound noisier, and these motors tend to clatter a bit around 3k. If it's actually rattling it's most likely where the overpipe gets close to the subframe, I'd check there first.

Impureclient · 04-21-2019, 10:00 PM

Probably posting a video would help out a lot.

humfrz · 04-21-2019, 10:03 PM

Yep. I'd also guess some piece of your exhaust system is hitting something else. I'd suggest that you figure which way the engine twists (torques) over under acceleration and see which exhaust piece is coming close to something else.

Bubba says, once you find the piece, just pry it over with a crowbar and use baling wire to wire it away from that piece.

humfrz & Bubba

YgRoshi · 04-21-2019, 11:21 PM

I see, thanks a lot fellas!

gravitylover · 04-22-2019, 08:23 AM

Mine has an awesome heat shield rattle right at 4k, not 3850 and not 4200. My solution has been to accelerate past that point as quickly as possible so it doesn't bother me for more than a second at a time.

Tcoat · 04-22-2019, 08:54 AM

Quote:

Originally Posted by gravitylover

Mine has an awesome heat shield rattle right at 4k, not 3850 and not 4200. My solution has been to accelerate past that point as quickly as possible so it doesn't bother me for more than a second at a time.

I had that as well but just hit and pried on random shields until it stopped.

NARFALICIOUS · 04-22-2019, 10:50 AM

Check the clearance on the Over Pipe.

Fast13FRS · 04-22-2019, 06:32 PM

Yup mine has a complete HKS header, pipe and exhaust and has a rattle at idle through about 2500 RPMs. the car is so low to the ground with the splitter and wide body kit I cannot see under it. cannot wait till my 4 post lift gets installed next week.

04-21-2019, 09:48 PM	#1
YgRoshi Member Join Date: Mar 2019 Drives: 2017 GT86 Toyota Location: Portland, Oregon Posts: 13 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Rattling noise coming from car? Just changed out entire exhaust system yesterday (Header, Overpipe, Frontpipe, Muffler) and there is some sort of rattling? noise coming from the front of the car whenever I am around 2.3 - 3k RPM. No lights are on, no funny smells, or exhaust leaks after I went back under the car today, even took off the pans and retightened every screw that I tampered with, anyone have any idea what is going on? or do I just desperately need a tune?

04-22-2019, 08:23 AM	#6
gravitylover Senior Member Join Date: Nov 2014 Drives: 2013 BRZ Premium 6MT White Location: SE NY Posts: 1,503 Thanks: 1,218 Thanked 669 Times in 474 Posts Mentioned: 7 Post(s) Tagged: 1 Thread(s)	Mine has an awesome heat shield rattle right at 4k, not 3850 and not 4200. My solution has been to accelerate past that point as quickly as possible so it doesn't bother me for more than a second at a time. __________________

04-22-2019, 10:50 AM	#8
NARFALICIOUS Senior Member Join Date: Aug 2015 Drives: '88 Supra 1JZ, '16 FR-S, '23 GR86 Location: Johto Region Posts: 597 Thanks: 62 Thanked 360 Times in 206 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Check the clearance on the Over Pipe. __________________ NARFALICIOUS Noob Poster 1988 \| 2016

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04-21-2019, 10:00 PM	#3
Impureclient Banned Join Date: May 2015 Drives: 2015 FR-S Location: NPR, Florida Posts: 2,404 Thanks: 1,802 Thanked 2,903 Times in 1,282 Posts Mentioned: 25 Post(s) Tagged: 2 Thread(s)	Probably posting a video would help out a lot.

04-21-2019, 10:03 PM	#4
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,938 Thanks: 28,905 Thanked 31,955 Times in 16,478 Posts Mentioned: 709 Post(s) Tagged: 2 Thread(s)	Yep. I'd also guess some piece of your exhaust system is hitting something else. I'd suggest that you figure which way the engine twists (torques) over under acceleration and see which exhaust piece is coming close to something else. Bubba says, once you find the piece, just pry it over with a crowbar and use baling wire to wire it away from that piece. humfrz & Bubba

04-21-2019, 11:21 PM	#5
YgRoshi Member Join Date: Mar 2019 Drives: 2017 GT86 Toyota Location: Portland, Oregon Posts: 13 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I see, thanks a lot fellas!

04-22-2019, 06:32 PM	#9
Fast13FRS Member Join Date: Apr 2019 Drives: 2013 Scion FRS Location: Minneapolis Posts: 32 Thanks: 0 Thanked 26 Times in 15 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yup mine has a complete HKS header, pipe and exhaust and has a rattle at idle through about 2500 RPMs. the car is so low to the ground with the splitter and wide body kit I cannot see under it. cannot wait till my 4 post lift gets installed next week.

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