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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 10-31-2021, 07:01 PM   #1
chaoskaze
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Unhappy Bad vibration after new clutch

Help


I can't figure out why my transmission just vibrates between 3.2k-2.5k rpm after installing the new clutch. Inspected everything & they look great.....


I was so annoyed I changed a transmission.......it got better but it's still there.

Is it possible that the new flywheel is out of balance?
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Old 11-01-2021, 01:53 AM   #2
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Originally Posted by chaoskaze View Post
Help


I can't figure out why my transmission just vibrates between 3.2k-2.5k rpm after installing the new clutch. Inspected everything & they look great.....


I was so annoyed I changed a transmission.......it got better but it's still there.

Is it possible that the new flywheel is out of balance?
Please clarify.

You installed a new clutch and now the transmission vibrates? How do you figure its not the new clutch that is vibrating?

When you replaced the clutch did that include the pressure plate?

Did you replace the TOB?

So, you implied that you replaced the flywheel too. Is that so?

If you didn't replace the flywheel, did you at least have the flywheel resurfaced?

Come back.
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Old 11-01-2021, 02:26 AM   #3
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Originally Posted by humfrz View Post
Please clarify.

You installed a new clutch and now the transmission vibrates? How do you figure its not the new clutch that is vibrating?
Engine and transmission vibrate as a single unit. Yes, it's possible that the flywheel is out of balance. Either way, still need to pull it all apart again.
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Old 11-01-2021, 03:29 AM   #4
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Engine and transmission vibrate as a single unit. Yes, it's possible that the flywheel is out of balance. Either way, still need to pull it all apart again.
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Old 11-01-2021, 04:02 AM   #5
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Originally Posted by chaoskaze View Post
Is it possible that the new flywheel is out of balance?
Stock flywheel or lightweight flywheel? I had a similar issue, but it was related with the lw flywheel. Went back to a complete stock flywheel and clutch-kit and now I don't have any vibrations at all.
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Old 11-01-2021, 01:08 PM   #6
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Iffen you don't take it apart on purpose sooner, it'll take itself apart later.
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Old 11-01-2021, 07:07 PM   #7
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Originally Posted by Ultramaroon View Post
Engine and transmission vibrate as a single unit. Yes, it's possible that the flywheel is out of balance. Either way, still need to pull it all apart again.
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This is a pain for my ears. Unfortunately, our vehicles have various problems. It's like being revealed with a human being with time.

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Old 11-06-2021, 02:39 PM   #8
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is it possible you got the crank sensor wheel on backwards or correct but not fully tight
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Old 11-06-2021, 03:41 PM   #9
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is it possible you got the crank sensor wheel on backwards or correct but not fully tight
It wouldn't start if backward. Not tight? That's a disturbing thought. Yikes!
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Old 11-15-2021, 10:10 PM   #10
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Quote:
Originally Posted by chaoskaze View Post
Help


I can't figure out why my transmission just vibrates between 3.2k-2.5k rpm after installing the new clutch. Inspected everything & they look great.....


I was so annoyed I changed a transmission.......it got better but it's still there.

Is it possible that the new flywheel is out of balance?
Does it do it with the clutch pressed in or the car in neutral or only when driving?
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Old 11-19-2021, 10:15 AM   #11
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In my opinion, this is only the fault of a poorly pressed clutch ...

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Old 12-25-2021, 04:09 AM   #12
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Unhappy

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Does it do it with the clutch pressed in or the car in neutral or only when driving?
Merry Xmas, It only does it when it's in gear in between 3.1k to 2.5k especially as the rpm drop naturally.

I drove like 200 miles since I posted, my friend drove it & said it's not much...

I don't know if I'm just used to it now or I have habits to not drive in the rpm it vibrates now. I'm starting to think it's more like a resonance instead of vibration.
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Old 01-20-2022, 09:15 AM   #13
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In my opinion, this is only the fault of a poorly pressed clutch ...
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Old 01-20-2022, 11:41 AM   #14
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In my opinion, this is only the fault of a poorly pressed clutch ...
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