A swoosh or whoosh sound when shifting from 1st to 2nd gear

[edido]

Hi all,

I recently noticed a swoosh/whoosh sound when I shift from 1st to 2nd gear.
- The sounds is present while moving the shift stick (with clutch fully down) from 1st to 2nd. Once the gear in 2nd and I release the clutch there is no swoosh/whoosh sound.
- No swoosh/whoosh sound present when I shift from 2nd-->3rd or other gear nor when I downshift.
- If I shift at slow speed, 1500-2000 RPM, I don't hear the sound. I normally shift around 3500 (I consider it's normal driving), and that's what I hear the sound.

I have the following mods:
- PRL HVI
- Acuity Shifter Cable Bushings
- SiriMoto N1 - Clutch Master Cylinder CMC Damper Delete / Bypass Kit
- PRL Steel Braided Clutch Line
- Amsoil Synchromesh MTF Transmission Fluid


Appreciate your thoughts.

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[SeanIsElsewhere]

Hi all,

I recently noticed a swoosh/whoosh sound when I shift from 1st to 2nd gear.
- The sounds is present while moving the shift stick (with clutch fully down) from 1st to 2nd. Once the gear in 2nd and I release the clutch there is no swoosh/whoosh sound.
- No swoosh/whoosh sound present when I shift from 2nd-->3rd or other gear nor when I downshift.
- If I shift at slow speed, 1500-2000 RPM, I don't hear the sound. I normally shift around 3500 (I consider it's normal driving), and that's what I hear the sound.

I have the following mods:
- PRL HVI
- Acuity Shifter Cable Bushings
- SiriMoto N1 - Clutch Master Cylinder CMC Damper Delete / Bypass Kit
- PRL Steel Braided Clutch Line
- Amsoil Synchromesh MTF Transmission Fluid


Appreciate your thoughts.

Possibly just the blow-off. It may be especially noticeable because you have the HVI installed which will make those sounds more prominent typically.

 

[SilverRocket]

Possibly just the blow-off. It may be especially noticeable because you have the HVI installed which will make those sounds more prominent typically.

I was going to say the same and the reason it "only happens 1->2" is because the wind and road noise is louder the faster you go in combination with the intensity of the shift. Are you shifting as hard/quickly at the top of second where you're at highway speeds?

 

[LyonIV]

I also installed a CMC damper delete and ss clutch line. After I did, I was getting a whoosh sound when shifting above 3000 rpm, sometimes when down shifting. I did not notice any performance issues or leaks. I'm guessing the noise is coming from vibrations in the clutch line.

 

[edido]

I was going to say the same and the reason it "only happens 1->2" is because the wind and road noise is louder the faster you go in combination with the intensity of the shift. Are you shifting as hard/quickly at the top of second where you're at highway speeds?

It happens in city and highway. I tried to shift hard/quickly and slow, it happens in both cases.
I hear you that this noise might be covered by wind or road noise as the car goes faster. I also tried to shift from 1-->2 and immediately 2-->3 (keep the speed more or less the same). No sounds from 2-->3.

 

[BlackDTeggy]

Honestly I posted something similar recently about hearing a louder engagement from 1-2. I acutally hear it less when I go up to 3k or higher, and hear it more at lower RPMs. Someone said its normal and just the countershaft and the way the transmissions are made.

 

[boosted_canoe]

i had the same noise for the first 15k miles. Even took it to the dealer because I thought something was wrong. it eventually went away. I think maybe it was the PCV valve or something. almost sounded like a faint whirring/whistle.

but since you the have the PRL HVI, you may just be hearing the intake.

 

[boosted_canoe]

Honestly I posted something similar recently about hearing a louder engagement from 1-2. I acutally hear it less when I go up to 3k or higher, and hear it more at lower RPMs. Someone said its normal and just the countershaft and the way the transmissions are made.

lol, i think you were quoting me. I'm cryptolime on other honda forums. either civicx, civicxi, civic11forums, or reddit. i don't remember. but, yea, i've read from multiple people that say it's the countershaft that clunks around, especially when shifting at low rpms. I wonder if a thicker MTF would help.

 

[creaturemachine]

Trade it for a Tesla.

 

[edido]

i had the same noise for the first 15k miles. Even took it to the dealer because I thought something was wrong. it eventually went away. I think maybe it was the PCV valve or something. almost sounded like a faint whirring/whistle.

but since you the have the PRL HVI, you may just be hearing the intake.

I doubt it's the intake. Intake sounds are completely different.

 

[boosted_canoe]

I doubt it's the intake. Intake sounds are completely different.

guess we need a recording

 

[edido]

Attaching recordings. It's zip because the site doesn't allow to upload .m4a or .wav files.
ITS_swoosh_1.m4a (or .wav) - the swoosh sounds is between seconds 6 and 7.
ITS_swoosh_2.m4a (or .wav) - the swoosh sounds is between seconds 3 and 4.

If you can't hear it with laptop speakers, please try headphones. I can hear it with AirPods.

View attachment ITS_swoosh.zip

 

[boosted_canoe]

i don't hear anything abnormal. I can barely hear it but sounds normal for these cars.

i think i can hear it in this video too, but more clearly. sounds like the dampers in the suspension.



also, don't drive like this guy just dumping the clutch pedal...

 

[edido]

Hearing recorded noises is hard. I can't hear anything special with the video you shared.
I am not saying that my recording is any better But I hear it since I know it...

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