Harsh vibration at 3000-4000rpms, trying to narrow it down (not stock) - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Clipdat · 03-27-2016, 07:13 PM

In for updates. Sorry about your baby.

Make sure to tell the service dept. not to wash your car.

cjd · 03-27-2016, 07:31 PM

It almost sounds like the issue I had with the exhaust rubbing in the rear subframe... Though mine also needed a somewhat high engine load (so accelerating or going up a hill) but... Well, you looked at that.

Hopefully it's nothing serious.

churchx · 03-27-2016, 07:48 PM

Yes, it would be interesting to hear actual cause. And whose guess was closest to it

P.S.
Stupid idea .. do vibrations happened only when driving, or also when free revving? In 2nd case i'd try to put it on ramp and someone below hearing while it's get revved. Or rize rear end and try to rew it in gear .. but yet again in similar fashion someone watching/hearing below, where it's easier to locate sound source ..

Kostamojen · 04-02-2016, 03:22 AM

Well the throwout bearing was replaced under warranty, but nothing could be found in regards to the vibration and they blamed it on the transmission mount insert and the shifter bushing... (Both of which I've changed AFTER getting the vibration).

I'll have to try removing the insert and maybe swapping engine mounts to see what that does.

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03-27-2016, 07:48 PM	#17
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,335 Thanks: 698 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	Yes, it would be interesting to hear actual cause. And whose guess was closest to it P.S. Stupid idea .. do vibrations happened only when driving, or also when free revving? In 2nd case i'd try to put it on ramp and someone below hearing while it's get revved. Or rize rear end and try to rew it in gear .. but yet again in similar fashion someone watching/hearing below, where it's easier to locate sound source ..

04-02-2016, 03:22 AM	#18
Kostamojen Senior Member Join Date: Oct 2011 Drives: 1993 Impreza w/ WRX Swap + FWD! Location: Roseville, CA Posts: 2,071 Thanks: 217 Thanked 952 Times in 500 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	Well the throwout bearing was replaced under warranty, but nothing could be found in regards to the vibration and they blamed it on the transmission mount insert and the shifter bushing... (Both of which I've changed AFTER getting the vibration). I'll have to try removing the insert and maybe swapping engine mounts to see what that does.

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