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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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10-30-2020, 09:58 PM | #15 |
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Never mind the sound you hear when stopped. You are listening extra hard and have now noticed what's called neutral rollover, or something like that. It's the clatter of all your gears rotating freely but also getting kicked by the pulses of the engine at idle.
One thing about fifth is that the transmission isn't actually doing anything. It's a straight shaft from the front to the back. That you don't hear anything on acceleration means that it's not in the transmission. It is odd only hearing it during engine braking. Is the driveshaft rubbing on something? edit: nah. that's not driveshaft rubbing. Diff mount blown out?
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10-31-2020, 07:36 AM | #16 |
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5th is straight? Not 4th (for which reason usually used in dyno runs)? I thought that both 5th & 6th on ours were overdrive?
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10-31-2020, 01:34 PM | #17 |
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They are for the automatic.
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11-01-2020, 04:10 AM | #18 | |
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11-02-2020, 12:44 PM | #19 |
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Was the rear trans mount torn/blown? I saw your other post.
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The Following User Says Thank You to Ultramaroon For This Useful Post: | ALWYZBZ (11-04-2020) |
11-04-2020, 03:25 AM | #20 |
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Trans mount was not torn or blown.
The rattling: Removing Whiteline Rear Diff + Whiteline trans bushing brought down the noise by 90%. The odd deceleration rattle is still feintly present but much more tolerable. The weird clunking: This was caused and fixed by centering the T bolt on the trans bushing. I guess it’s easy to overlook when tightening the bolt after removing the Whiteline trans bushing. |
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09-16-2021, 07:43 PM | #21 | |
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Hold on! Same here!
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I'm having the same issue! I just had an Action Clutch installed two weeks ago, and the second I left the shop, that buzzing started. It buzzes the most in 2nd, 3rd, and 5th gears for me. The owner told me it was because of my Verus Clutch fork... Has anyone found a solution? Or is it just a bad clutch kit? -PS. This is my first post I hope I didn't screw it up |
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09-17-2021, 02:38 AM | #22 | |
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09-26-2021, 10:48 PM | #23 | |
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11-23-2021, 09:39 PM | #24 | |
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I have Whiteline diff cradle inserts and Whiteline position traction kit(rear subframe inserts) I removed the diff inserts and can confirm just removing that reduced most of the rattle, if not all. Removing the subframe inserts would probably eliminate all of it. I also have STI mounts if that matters. |
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