Exhaust rattle help

gotchu99 · 02-27-2012, 12:29 AM

Hello all,

My Berk cbe has started rattling on cold days until the car gets warmed up. It feels like its coming from the middle of the exhaust. Sounds like its hitting part of the frame. Kind of a buzzing noise. I also have berk hfcs. Tomorrow I will get under the car. anyone else have a similar exhaust buzz / vibration on cold starts? Any advice much appreciated, thanks.

Tickwomp · 02-27-2012, 10:15 AM

Check out the brace that is bolted on between the cats and the bottom of the engine. Mine was making noise and when I checked it out, both bolts were gone that fastens the brace to the bottom of the engine. I used a dab of loctite when I replaced them, and all is well now.

gotchu99 · 02-27-2012, 11:27 AM

Thanks, will start there.

Mandingo · 02-27-2012, 01:35 PM

hmm. Check where Tickwomp said as well as the brace that goes under the x-pipe section.

Other than that, just check every possible contact point you can think of when you have the car on jack stands/ramps.

NOBLE|370Z · 03-03-2012, 12:44 AM

I JUST had the Nissan dealer put on some Berk HFCs (w/ Stillen CBE), and its rattling like crazy as soon as I left the install bay. I spent $320 for labor! Absolutely sucks because if I could get underneath the car then I would check for rattle points myself. Instead I'm taking it back to the dealer to have them go over their work. I'm hoping they resolve it and not blame the after market HFCs. As far as I know the dimensions are exactly the same as stock...

Ill ask them to ensure the mechanic looks at that brace you mentioned- hopefully that's the rattle point- thanks

axio · 03-03-2012, 01:39 AM

Noble, did you buy the Stillen CBE used or new? Their earlier run exhausts had rear crossmember clearance problems, which could be what you are experiencing. I have the exact same Berk HFC/Stillen CBE setup as you and when Stillen sent me a new midpipe, the clearance problem was gone. You could tell the difference in the bend when you put them side by side. They did fix the problem though and if you bought a new Stillen exhaust, it should be ok.

LakeShow · 03-03-2012, 01:43 AM

Just kick it a couple times to stop it like anything else that rattles.

gotchu99 · 03-03-2012, 12:35 PM

Update: My Berk CBE was rattling on the mid crossbar. The exhaust was fine for a year then started intermittent buzzing. I had the brackets taken off and rewelded to give it plenty of clearance now. Didn't realize how close it originally sat to the Crossbar.

02-27-2012, 12:29 AM	#1 (permalink)
gotchu99 Base Member Join Date: Feb 2011 Location: ny Posts: 86 Drives: '09 370z black mt, Rep Power: 14	Exhaust rattle help Hello all, My Berk cbe has started rattling on cold days until the car gets warmed up. It feels like its coming from the middle of the exhaust. Sounds like its hitting part of the frame. Kind of a buzzing noise. I also have berk hfcs. Tomorrow I will get under the car. anyone else have a similar exhaust buzz / vibration on cold starts? Any advice much appreciated, thanks.

02-27-2012, 01:35 PM	#4 (permalink)
Mandingo Track Member Join Date: Nov 2010 Location: Dallas Posts: 625 Drives: '10 370z 6spd Rep Power: 3371	hmm. Check where Tickwomp said as well as the brace that goes under the x-pipe section. Other than that, just check every possible contact point you can think of when you have the car on jack stands/ramps. __________________ some mods

03-03-2012, 01:39 AM	#6 (permalink)
axio Enthusiast Member Join Date: Jan 2009 Location: SF Bay Area, CA Posts: 271 Drives: '09 370Z Rep Power: 16	Noble, did you buy the Stillen CBE used or new? Their earlier run exhausts had rear crossmember clearance problems, which could be what you are experiencing. I have the exact same Berk HFC/Stillen CBE setup as you and when Stillen sent me a new midpipe, the clearance problem was gone. You could tell the difference in the bend when you put them side by side. They did fix the problem though and if you bought a new Stillen exhaust, it should be ok. __________________ GTM Stg II SC w/ Aquamist methanol injection, GTM oil cooler, Berk HFC, Stillen CBE, BC ER coilovers, Hotchkis sways, TWM short shifter, Clutch spring mod, CarboTech XP8s

03-03-2012, 01:43 AM	#7 (permalink)
LakeShow A True Z Fanatic Join Date: Dec 2010 Location: L.I., NY Posts: 5,307 Drives: Everything Rep Power: 26	Just kick it a couple times to stop it like anything else that rattles. __________________ \|2013 Audi S4\|Ibis White/Black\|S-Tronic P+\| \|2013 370z\|PearlWhite/Persimmon\|Touring/Sport/Nav\|F.I. CBE 18" CF\| \|Sold\|2011 370z\|Gun Metallic\|Touring/Sport/Nav\|

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02-27-2012, 10:15 AM	#2 (permalink)
Tickwomp Base Member Join Date: Dec 2011 Location: Plano Texas Posts: 73 Drives: 2010 370Z Nismo Rep Power: 14	Check out the brace that is bolted on between the cats and the bottom of the engine. Mine was making noise and when I checked it out, both bolts were gone that fastens the brace to the bottom of the engine. I used a dab of loctite when I replaced them, and all is well now.

02-27-2012, 11:27 AM	#3 (permalink)
gotchu99 Base Member Join Date: Feb 2011 Location: ny Posts: 86 Drives: '09 370z black mt, Rep Power: 14	Thanks, will start there.

03-03-2012, 12:44 AM	#5 (permalink)
NOBLE\|370Z Base Member Join Date: Sep 2011 Location: Calgary AB Posts: 61 Drives: 09 Nissan 370Z Rep Power: 14	I JUST had the Nissan dealer put on some Berk HFCs (w/ Stillen CBE), and its rattling like crazy as soon as I left the install bay. I spent $320 for labor! Absolutely sucks because if I could get underneath the car then I would check for rattle points myself. Instead I'm taking it back to the dealer to have them go over their work. I'm hoping they resolve it and not blame the after market HFCs. As far as I know the dimensions are exactly the same as stock... Ill ask them to ensure the mechanic looks at that brace you mentioned- hopefully that's the rattle point- thanks

03-03-2012, 12:35 PM	#8 (permalink)
gotchu99 Base Member Join Date: Feb 2011 Location: ny Posts: 86 Drives: '09 370z black mt, Rep Power: 14	Update: My Berk CBE was rattling on the mid crossbar. The exhaust was fine for a year then started intermittent buzzing. I had the brackets taken off and rewelded to give it plenty of clearance now. Didn't realize how close it originally sat to the Crossbar.