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| Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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07-03-2016, 04:59 PM
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#1 |
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Exhaust question, Rattle or Rasp
So right now I'm running a magna flow catback without a resonator in the mid pipe area. Sounded great before, then today I installed a Berk HFC. After install and making sure I installed all the gaskets and everything was all tight, upon driving it around while it was cold, there was rattling from 4k-7k range. Once it warmed up throughout the day there was a different rattling sound from 4k-4.5k. Now will this be fixed by adding a resonator in the mid pipe area, or is there another reason why it's rattling.
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07-03-2016, 07:39 PM
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#2 |
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Huge E85 fan!
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Resonator won't fix a rattle.
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07-03-2016, 09:25 PM
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#3 |
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I reckon some part of your exhaust is lose or banging up against something.
humfrz |
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| The Following User Says Thank You to humfrz For This Useful Post: | Spartarus (07-03-2016) |
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07-04-2016, 01:03 AM
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Quote:
Going to try to put a resonator back on and see if it helps. |
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07-04-2016, 03:02 AM
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#5 | |
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Quote:
 Sometimes when an engine "torques over" a part of the upper exhaust can hit and vibrate on a part of the frame/undercarriage ...... I hope you get it sorted out ......  humfrz |
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07-05-2016, 04:17 PM
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#6 | |
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07-05-2016, 05:40 PM
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#7 | |
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07-05-2016, 09:11 PM
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#8 |
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Huge E85 fan!
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I'll bet you that the Berk pipe has a crack in it. A hairline crack can be a bitch to find and will make a rattle that will change with the temp of the pipe. Check around the flanges and all the welds. Bend and flex them. It could also be in the hanger area.
I had a catback exhaust with hairline cracks at some brackets in the axleback section and once the cracks were welded the rattle went away. |
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