Grinding Gears + New Trans - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

evan · 03-25-2014, 05:58 PM

Quote:

Originally Posted by DoomsdayJesus

They're shit. Either that, or the fluids they used were shit. Mine ate the synchros by 5000 miles without any tracking or beating it up. When they drained it the fluid was filled with metal shavings. Numerous other people in here have had the same problem and tranny replacements.

I'm fucked since I'm so heavily modified they would laugh me out the door if I tried excercising warranty, which I won't. Sucks since this is happening to stock cars and my mods obviously wouldn't be to blame.

LuxuryVapes · 03-25-2014, 07:52 PM

Funny part is these transmission so "rated" to handle 300hp

NOHOME · 03-26-2014, 11:08 AM

My gut feeling is that gearboxes are going to be an Achilles heel on these cars. They sure do hate the cold.

DoomsdayJesus · 03-26-2014, 02:37 PM

Quote:

Originally Posted by evan

I'm fucked since I'm so heavily modified they would laugh me out the door if I tried excercising warranty, which I won't. Sucks since this is happening to stock cars and my mods obviously wouldn't be to blame.

Quote:

Originally Posted by LuxuryVapes

Funny part is these transmission so "rated" to handle 300hp

Honestly from everything I've heard from everyone else, just using better gear oil seems to solve the problem. People switching to Motul 300V have said nothing but good things. Unfortunately I didn't find that out until it was too late with the first transmission, and I'm pretty sure upon replacement they used a different gear oil as well than stock.

I'd also make an early gear oil change, in the rear dif as well, part of your break-in. Both have been dirty as hell for everyone draining them.

evan · 03-26-2014, 05:08 PM

I was using Pentosin MTF2 which worked great at solving cold operation issues until the ACT clutch mucked everything up. Ultimately, I'm going to dump this unit and go with some as of yet unidentified unit in the near future.

pgeist · 03-26-2014, 06:49 PM

New Trans is in.. seems smoother.. but time will tell. Is there any break in procedure I should use or just drive normal?

evan · 03-26-2014, 06:51 PM

Quote:

Originally Posted by pgeist

New Trans is in.. seems smoother.. but time will tell. Is there any break in procedure I should use or just drive normal?

Not really any break-in unless they changed the clutch too. I would be skeptical of the mtf they put in there. I know that Motul, Pentosin and RL MTL has worked better for others..

chas3wba0 · 03-26-2014, 06:55 PM

Quote:

Originally Posted by pgeist

New Trans is in.. seems smoother.. but time will tell. Is there any break in procedure I should use or just drive normal?

I would think the same as the initial break-in... don't shift at too high of RPM's for a while, run it through all gears, engine-brake, etc. just to let all the teeth in each gear "mate" properly

fledonfoot · 03-27-2014, 10:55 PM

Quote:

Originally Posted by evan

Not really any break-in unless they changed the clutch too. I would be skeptical of the mtf they put in there. I know that Motul, Pentosin and RL MTL has worked better for others..

New manual gearboxes come from Toyota pre-filled with factory fill fluid at the correct level. The auto's ship to us empty.

03-26-2014, 06:49 PM	#20
pgeist Member Join Date: Apr 2013 Drives: 2013 Black BRZ Limited 6MT Location: NJ Posts: 62 Thanks: 5 Thanked 18 Times in 17 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	New Trans is in.. seems smoother.. but time will tell. Is there any break in procedure I should use or just drive normal? __________________ Zeta Stage 2 Drop In + Red Silicone Tubing \|\| Zeta SS Cat Back \|\| DC Sports Cat-Delete Front Pipe \|\| Torque Pro + MiniOBD Bluetooth \|\| Fumoto F-108 Drain Valve \|\| Konig Daylite Gold 17x7 +40 14.2lbs \|\| Anarchy Motive Shift Knob Future: Catted header, OEM Audio+

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03-25-2014, 07:52 PM	#16
LuxuryVapes Member Join Date: Nov 2013 Drives: 2013 Raven Scion Frs Location: Mountain House Posts: 83 Thanks: 13 Thanked 26 Times in 17 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Funny part is these transmission so "rated" to handle 300hp

03-26-2014, 11:08 AM	#17
NOHOME Senior Member Join Date: Jun 2012 Drives: RAVEN Location: LONDON ONTARIO Posts: 795 Thanks: 86 Thanked 800 Times in 346 Posts Mentioned: 12 Post(s) Tagged: 2 Thread(s)	My gut feeling is that gearboxes are going to be an Achilles heel on these cars. They sure do hate the cold.

03-26-2014, 05:08 PM	#19
evan Senior Member Join Date: Dec 2013 Drives: fr-s Location: pdx Posts: 546 Thanks: 396 Thanked 202 Times in 129 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	I was using Pentosin MTF2 which worked great at solving cold operation issues until the ACT clutch mucked everything up. Ultimately, I'm going to dump this unit and go with some as of yet unidentified unit in the near future.

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