Rotrex Idle Whine? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jacobe38 · 05-12-2021, 10:58 PM

Hello all, hoping to get a bit of feedback on my new c30. installed today, and I wanted to verify this idle noise is normal. i move around a bit because its weirdly angle dependent on how clear you can hear the whine. as such i figure its coming from within the rotrex and what you hear is the sound echoing out through the tube and air filter.

what im trying to pick out is that high pitch whine. unsure if mechanical whine, or just the sound of air whistling, normal or not, etc. kind of hard to hear from inside, did not seem to get louder when i revved a bit.

just wanted to verify this is normal sounding for a c30 at idle. fluid reservoir is full

thanks!

radroach · 05-12-2021, 11:10 PM

You should drive it to the dealership and say yeah I think there's a whine under there or something

tomm.brz · 05-13-2021, 04:57 AM

sounds normal to me , that 's just the suction noise of it
my hks gt2 sounds identical
You will know, when the sound won't be right

jacobe38 · 05-13-2021, 11:56 AM

Quote:

Originally Posted by tomm.brz

sounds normal to me , that 's just the suction noise of it
my hks gt2 sounds identical
You will know, when the sound won't be right

thanks for the reassurance. it is a bit louder in person, that didnt come thru the video perfectly.

but this is my first time up close with a supercharger like this so, was getting anxious

tomm.brz · 05-13-2021, 03:01 PM

don' t worry

jeepmor · 05-25-2021, 12:44 PM

Sounds normal. HKS version over here, sounds very similar to mine.

Sapphireho · 05-25-2021, 01:13 PM

You did properly prime it before starting, correct?

My c30 got louder and louder as it failed. Got so loud you had to cover your ears standing next to the car.

CSG Mike · 05-27-2021, 02:01 PM

Sounds normal. I hear air filter, not whine.

05-12-2021, 10:58 PM	#1
jacobe38 @slothbrz on IG Join Date: Jul 2020 Drives: Track BRZ - Supercharged Location: MI Posts: 122 Thanks: 23 Thanked 55 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Rotrex Idle Whine? Hello all, hoping to get a bit of feedback on my new c30. installed today, and I wanted to verify this idle noise is normal. i move around a bit because its weirdly angle dependent on how clear you can hear the whine. as such i figure its coming from within the rotrex and what you hear is the sound echoing out through the tube and air filter. what im trying to pick out is that high pitch whine. unsure if mechanical whine, or just the sound of air whistling, normal or not, etc. kind of hard to hear from inside, did not seem to get louder when i revved a bit. just wanted to verify this is normal sounding for a c30 at idle. fluid reservoir is full thanks!

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05-12-2021, 11:10 PM	#2
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	You should drive it to the dealership and say yeah I think there's a whine under there or something

05-13-2021, 04:57 AM	#3
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,196 Thanks: 500 Thanked 1,067 Times in 775 Posts Mentioned: 65 Post(s) Tagged: 0 Thread(s)	sounds normal to me , that 's just the suction noise of it my hks gt2 sounds identical You will know, when the sound won't be right

05-13-2021, 03:01 PM	#5
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,196 Thanks: 500 Thanked 1,067 Times in 775 Posts Mentioned: 65 Post(s) Tagged: 0 Thread(s)	don' t worry

05-25-2021, 12:44 PM	#6
jeepmor Senior Member Join Date: Apr 2014 Drives: 84 CJ7, 08 Duramax, 2014 FRS Location: Oregon Posts: 478 Thanks: 338 Thanked 128 Times in 103 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Sounds normal. HKS version over here, sounds very similar to mine.

05-25-2021, 01:13 PM	#7
Sapphireho ¯\_(ツ)_/¯ Join Date: Mar 2016 Drives: '15 ultramarine Location: Idaho Posts: 13,192 Thanks: 5,451 Thanked 18,240 Times in 8,609 Posts Mentioned: 155 Post(s) Tagged: 0 Thread(s)	You did properly prime it before starting, correct? My c30 got louder and louder as it failed. Got so loud you had to cover your ears standing next to the car.

05-27-2021, 02:01 PM	#8
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,530 Thanks: 8,920 Thanked 14,177 Times in 6,835 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	Sounds normal. I hear air filter, not whine.

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