Help :( tranny issues - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mattaubel · 08-29-2016, 02:36 AM

I started noticing a grinding noise between 2500-4000 rpm while decelerating (engine braking) in 5th gear. Push in the clutch it goes away, go below 2500 rpm it goes away. It is also faint when in 4th gear. No grinding when I am shifting, and no other new noises.

It started after I had a kartboy short shifter/rear bushing and a ACT 6 puck (with springs) clutch installed both in the same job.

I don't think it's synchros cause it isn't happening when I shift between the gears.. Flywheel is stock so its not from a lightened flywheel. It's not a normal whur sound or a rattle... Maybe its worn down gears but I mean that doesn't make sense since I only put on 3000 miles on it when I bought it used with 7000 miles on the odometer..

Looking through the forums most people are saying if its grinding its probably the synchros or a throw out bearing or an input shaft bearing.

Anyone have a similar sound from their tranny? Its just confusing to me since I haven't experienced something like this thats RPM specific.

Thanks in advance.

Worst case scenario I go back to stock and see if warranty will replace my tranny.

Ultramaroon · 08-29-2016, 03:18 AM

Post a sound clip.

humfrz · 08-29-2016, 03:19 AM

Quote:

Originally Posted by mattaubel

.............

It started after I had a kartboy short shifter/rear bushing and a ACT 6 puck (with springs) clutch installed both in the same job.

I'd start there .........

humfrz

mattaubel · 08-29-2016, 03:47 AM

Quote:

Originally Posted by Ultramaroon

Post a sound clip.

Will do tomorrow

mattaubel · 08-29-2016, 03:48 AM

Quote:

Originally Posted by humfrz

I'd start there .........

humfrz

Maybe it's just the sound of my new clutch and something I need to get used to? I'll post sound clips tomorrow though

mattaubel · 08-29-2016, 07:24 PM

Quote:

Originally Posted by Ultramaroon

Post a sound clip.

[ame="https://www.youtube.com/watch?v=DEgWEItRfdw"]Grind - YouTube[/ame]

Sound clip. This is in 5th gear accelerating to 3000 rpm and then releasing gas, it ends at 2000 rpm.

mattaubel · 08-29-2016, 07:25 PM

Also, it is not the shift knob rattle.. that's a different sound that I am used to haha

wbradley · 08-29-2016, 07:38 PM

Tell her...I mean him to lose your phone number

GsxrMe · 08-29-2016, 07:38 PM

The joys of a puck clutch!

Ultramaroon · 08-29-2016, 07:46 PM

Quote:

Originally Posted by mattaubel

Sound clip. This is in 5th gear accelerating to 3000 rpm and then releasing gas, it ends at 2000 rpm.

Well here's the thing that is unique about fifth gear. It is the only gear in which the transmission doesn't do anything. The input shaft that sticks into the clutch disc is connected straight to the output shaft which sticks into the drive shaft.

I'll put money on something rattling in the clutch.

That's a really good recording, BTW.

mattaubel · 08-29-2016, 07:51 PM

Quote:

Originally Posted by Ultramaroon

Well here's the thing that is unique about fifth gear. It is the only gear in which the transmission doesn't do anything. The input shaft that sticks into the clutch disc is connected straight to the output shaft which sticks into the drive shaft.

I'll put money on something rattling in the clutch.

That's a really good recording, BTW.

Didn't know that thanks so much! Guess it's just a sound I'll have to get used to.

mattaubel · 08-29-2016, 08:05 PM

Also some extra information, trans fluid was really black when I swapped the clutch.. Only 10,000 miles on it so who knows

Drakiv · 08-29-2016, 08:28 PM

Quote:

Originally Posted by mattaubel

Also some extra information, trans fluid was really black when I swapped the clutch.. Only 10,000 miles on it so who knows

What fluid are you running? I would swap to Motul, it is seriously amazing. I have now run Amsoil, Motul, and the stuff im on now Neo Synthetic. Neo Synthetic takes the cake, however Motul is above Amsoil in feel. It really makes your transmission a different beast just from the gear oil you pick.

mattaubel · 08-29-2016, 09:23 PM

Quote:

Originally Posted by Drakiv

What fluid are you running? I would swap to Motul, it is seriously amazing. I have now run Amsoil, Motul, and the stuff im on now Neo Synthetic. Neo Synthetic takes the cake, however Motul is above Amsoil in feel. It really makes your transmission a different beast just from the gear oil you pick.

Currently running redline. If anyone is reading this and just got their 86 I highly recommend you change your granny fluid.. I had it for 2 months when the clutch blew out and it's a certified preowned that the dealer claimed had a x whatever point inspection and fluid check... BS. Tranny fluid was black as ever

08-29-2016, 02:36 AM	#1
mattaubel Member Join Date: Jun 2016 Drives: 2015 FRS Location: Northern California Posts: 62 Thanks: 37 Thanked 24 Times in 19 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Help :( tranny issues I started noticing a grinding noise between 2500-4000 rpm while decelerating (engine braking) in 5th gear. Push in the clutch it goes away, go below 2500 rpm it goes away. It is also faint when in 4th gear. No grinding when I am shifting, and no other new noises. It started after I had a kartboy short shifter/rear bushing and a ACT 6 puck (with springs) clutch installed both in the same job. I don't think it's synchros cause it isn't happening when I shift between the gears.. Flywheel is stock so its not from a lightened flywheel. It's not a normal whur sound or a rattle... Maybe its worn down gears but I mean that doesn't make sense since I only put on 3000 miles on it when I bought it used with 7000 miles on the odometer.. Looking through the forums most people are saying if its grinding its probably the synchros or a throw out bearing or an input shaft bearing. Anyone have a similar sound from their tranny? Its just confusing to me since I haven't experienced something like this thats RPM specific. Thanks in advance. Worst case scenario I go back to stock and see if warranty will replace my tranny.

08-29-2016, 03:18 AM	#2
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1117 Post(s) Tagged: 9 Thread(s)	Post a sound clip. __________________ service manuals

08-29-2016, 07:38 PM	#9
GsxrMe Senior Member Join Date: Jul 2015 Drives: Late 2014 Subaru BRZ Location: Cape Coral, FL Posts: 557 Thanks: 20 Thanked 184 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	The joys of a puck clutch! __________________ 2014 Subaru BRZ FBM Turbokit: GTX3076R - ECUTEK HRI FlexFuel tune - FBM 3" Turboback Exhaust - 550cc Injectors - Walbro 485 Fuel Pump - 4bar Map Sensor - FBM Oil Pan - ACT SB7-XTSS - AMSOIL all fluids - Forester XT Oil Cooler - Cusco engine, trans mounts - Whiteline rear differential bushings - Perrin shifter bushing - Firehawk 235/45/17 - AEM Failsafe

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08-29-2016, 07:25 PM	#7
mattaubel Member Join Date: Jun 2016 Drives: 2015 FRS Location: Northern California Posts: 62 Thanks: 37 Thanked 24 Times in 19 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Also, it is not the shift knob rattle.. that's a different sound that I am used to haha

08-29-2016, 08:05 PM	#12
mattaubel Member Join Date: Jun 2016 Drives: 2015 FRS Location: Northern California Posts: 62 Thanks: 37 Thanked 24 Times in 19 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Also some extra information, trans fluid was really black when I swapped the clutch.. Only 10,000 miles on it so who knows

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