whining/whirring noise during high load/rpm clutch engagement

[Apoc]

Clutch delay valve

[enigmaaron]

Originally Posted by clzzical

It's not instant, and does not show until clutch is released. I think it takes about a 1.5sec to 2sec to appear, but whatever the time is, it is definitely not as long as in the video.

I'll try to get a video later today for you.

What I'm saying though is in the video I was trying to reproduce the noise by keeping the the clutch at a slip point so it may seem longer because I was making a longer shift.

[clzzical]

Originally Posted by enigmaaron

What I'm saying though is in the video I was trying to reproduce the noise by keeping the the clutch at a slip point so it may seem longer because I was making a longer shift.

Oh I see. Anyhow, I still wanted to show chate what it is like in my car under a normal shift, and not purposely trying to reproduce the noise.

chate, do you get the noise/delayed indicator even under a normal shift?

[ame="http://www.youtube.com/watch?v=qZ6F5mNgO8Q"]2013 BRZ Gear Indicator - YouTube[/ame]

[gmookher]

Originally Posted by Apoc

Clutch delay valve

where did you find a cdv?

[Khyron686]

Originally Posted by cobrabyte

I have a similar noise and it doesn't seem to be related to the other thread.

It sounds like a muffled horn and it only happens when driving/shifting aggressively. My buddy has an FR-S and he heard the sound in my car and said 'WTF?' He doesn't have the same issue in his car.

LOL finally someone with my sound. It's like a wimpy horn going Hoot when you let off the clutch, not aggressive (in traffic), and only 1-2 or 2-3 never higher. And not too often for me, but at least a few times per trip.

My wife thinks it's funny. Shift, honk. Shift, hoot.

And I'm old, 6+ manual cars, 100K+ each never replaced a clutch. I'm smoooooth like an automatic.

[cobrabyte]

Originally Posted by Khyron686

LOL finally someone with my sound. It's like a wimpy horn going Hoot when you let off the clutch, not aggressive (in traffic), and only 1-2 or 2-3 never higher. And not too often for me, but at least a few times per trip.

My wife thinks it's funny. Shift, honk. Shift, hoot.

And I'm old, 6+ manual cars, 100K+ each never replaced a clutch. I'm smoooooth like an automatic.

Yeah, that's the sound. I don't get it beyond 3rd gear either. Odd indeed.

[Flow]

I'm getting something similar, so I figured I'd add what I've noticed:

I've never heard it above third and only at higher rpms, but I haven't watched closely enough to see if it's at a specific rpm or rpm range.

Additionally, I'm wondering if there is some relationship to temperature, as it for me it seems to go away after driving for 5-10 mins.

Edit: Played around with this today, and I could reproduce it at lower RPMs (~2.3k) as well.

[Flow]

New post for bump.

This issue is getting worse for me, and I'm wondering if it has to do with the cold weather. Previously, it only seemed to be a problem when I first started the car up, and for a little after.

Now, it's down in the 40's in Boston, and it's occurring throughout driving...

[Mathewgzlz]

You know my car started doing this and u noticed it first started doing it when temperatures dropped down to the 40s around nc p.s. do you guys live in the US cause my fr-s doesn't have a gear indicator 6MT

[mhigham]

I have the same noise. I am thinking its probably something to do with the torque sensing LSD. Since everyone is having it, its likely normal. Whether normal will turn out to be another idle fiasco is yet to be seen.

Mike

[denkigrve]

The LSD is in the back of the car the noise is coming from the transmission. You should delay applying gas when you shift and the noise goes away. It only happens when you slip the clutch. Go see the dealer.

[7thgear]

Originally Posted by denkigrve

The LSD is in the back of the car the noise is coming from the transmission. You should delay applying gas when you shift and the noise goes away. It only happens when you slip the clutch. Go see the dealer.

dealer takes your car, takes apart the transmission, tells you it's a glazed clutch and says that they don't cover that and that i probably "drove it wrong" then get hit with a 1000 dollar bill for labor and parts.

i don't feel like taking that risk just yet

[denkigrve]

Originally Posted by 7thgear

dealer takes your car, takes apart the transmission, tells you it's a glazed clutch and says that they don't cover that and that i probably "drove it wrong" then get hit with a 1000 dollar bill for labor and parts.

i don't feel like taking that risk just yet

You can fight that. This is a new car. It's been doing that since day 1.

[wheelhaus]

Originally Posted by mhigham

I have the same noise. I am thinking its probably something to do with the torque sensing LSD. Since everyone is having it, its likely normal. Whether normal will turn out to be another idle fiasco is yet to be seen.

Mike

Not likely, the LSD is a torsen, true, but it's only a group of gears and has no parts that can slip, spring, slide or vibrate. And driving in a straight line means the torsen mechanisms (worm gears) effectively do nothing. Considering the very small number of people experiencing this, it could simply be a batch of plates were made/machined in such a way that they are a bit sensitive to particular shifting styles, and the clutch plate vibrates on heavy slipping at certain RPM and engine load. I agree a slightly delayed shift/application of gas may help, slamming through gears and dropping the clutch hard every shift certainly isn't going to be good in the long run, and vibrations sometimes feed themselves and get worse.