Built manual transmission or where to get sychros - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Rocket.BRZ · 05-29-2014, 06:50 PM

Well since I'm not the only one having issues with terrible synchros do we have any info on rebuilding this transmission? or just replacing the synchros?

billwot · 05-29-2014, 10:13 PM

Quote:

Originally Posted by Rocket.BRZ

Well since I'm not the only one having issues with terrible synchros do we have any info on rebuilding this transmission? or just replacing the synchros?

There's a 5 year/60K miles warranty on the drivetrain. Are you out of warranty?

Rocket.BRZ · 05-29-2014, 10:36 PM

Quote:

Originally Posted by billwot

There's a 5 year/60K miles warranty on the drivetrain. Are you out of warranty?

No but I have a competition stage 3 clutch, short shifter, aftermarket bushing, and the mtec spring.

Pacific Auto · 05-29-2014, 10:47 PM

IMO switch to stock then go to the dealer.

Rocket.BRZ · 05-29-2014, 11:00 PM

Quote:

Originally Posted by Pacific Auto

IMO switch to stock then go to the dealer.

Wouldn't they give me an issue with having a supercharger? The stock clutch slips so I had to upgrade the clutch.

Hawaiian · 05-30-2014, 12:11 AM

Quote:

Originally Posted by Rocket.BRZ

Wouldn't they give me an issue with having a supercharger? The stock clutch slips so I had to upgrade the clutch.

Nope, perfectly ok /sarcasm.

Norton 850 · 05-31-2014, 09:05 AM

Quote:

Originally Posted by Rocket.BRZ

Well since I'm not the only one having issues with terrible synchros do we have any info on rebuilding this transmission? or just replacing the synchros?

I don't know of any shops that are rebuilding these AISIN gearboxes. The dealer told me that they don't fix them; they pull and replace the complete unit.

It's a pity, really. I like the short throws of the gearbox but that second gear synchronizer "scrunch" greatly lowers my opinion of this gearbox, and the car, for that matter.

And even if we can live with this problem, what will prospective buyers think when trying to sell the car when the time comes? I can just imagine the excuses when the buyer goes for a test drive and experiences the scrunch: it's normal; they all do that; your not holding your tongue just right; or... .

andrew20195 · 06-02-2014, 04:18 PM

The reason Subaru dealers aren't rebuilding these things under warranty is Toyota/Aisin has a unit replacement policy, and the dealerships "don't have the special tools required for disassembly or reassembly." I put that in quotes because there are plenty of generic tools that can be used, and the service manual has the complete procedures for overhauling these units. The dealership can order internal parts.

So, if you have a trusted mechanic, it can be done.

Dipstik-sportech · 06-07-2014, 07:38 PM

Yes you can rebuild them I know I have one apart on my bench. You wouldn't want to though because the cost of the parts which have to be dealer ordered are outrageous. For 4th gear, synchro springs and pins, the shift collar and a bearing was over $600!!!

The Frozen North

Ben_G · 06-07-2014, 10:43 PM

Quote:

Originally Posted by Dipstik-sportech

Yes you can rebuild them I know I have one apart on my bench. You wouldn't want to though because the cost of the parts which have to be dealer ordered are outrageous. For 4th gear, synchro springs and pins, the shift collar and a bearing was over $600!!!

The Frozen North

That's for ONE gear????????????????

Dipstik-sportech · 06-07-2014, 11:00 PM

Yup

The Frozen North

andrew20195 · 06-10-2014, 10:46 AM

Quote:

Originally Posted by Dipstik-sportech

Yup

The Frozen North

Jesus. A whole new unit lists for about $2300.

Dipstik-sportech · 06-10-2014, 12:54 PM

U can find it for less that 2000$ if u search. It's a junk trans that's why its cheap

The Frozen North

shiro · 06-10-2014, 01:17 PM

True, the trans in this car seems pretty low end, especially if you do any type of FI to the car. I have a friend pushing over 400whp and is on his 4th transmission. Though he does have a pretty hefty clutch and clutch pressure plate for track racing.

I'm doing a little over 400whp myself (FBM FI kit) and shifting at high RPMs seems pretty difficult since the gears don't want to shift quikcly under full load (possibly from all the torque and inertia due to Forced Induction FI). I hoping my transmission doesn't take a crap on me too lol.

-Running a Clutchmasters FX350

05-29-2014, 06:50 PM	#1
Rocket.BRZ Banned Join Date: May 2014 Drives: 2010 WRX (sold) 2013 brz Location: my mind Posts: 345 Thanks: 6 Thanked 113 Times in 89 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Built manual transmission or where to get sychros Well since I'm not the only one having issues with terrible synchros do we have any info on rebuilding this transmission? or just replacing the synchros?

06-07-2014, 07:38 PM	#9
Dipstik-sportech Senior Member Join Date: Oct 2012 Drives: 2013 BRZ satin white pearl sportech Location: Thunder Bay Ontario Canada Posts: 1,813 Thanks: 842 Thanked 911 Times in 576 Posts Mentioned: 43 Post(s) Tagged: 0 Thread(s)	Yes you can rebuild them I know I have one apart on my bench. You wouldn't want to though because the cost of the parts which have to be dealer ordered are outrageous. For 4th gear, synchro springs and pins, the shift collar and a bearing was over $600!!! The Frozen North __________________ 2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished

06-07-2014, 11:00 PM	#11
Dipstik-sportech Senior Member Join Date: Oct 2012 Drives: 2013 BRZ satin white pearl sportech Location: Thunder Bay Ontario Canada Posts: 1,813 Thanks: 842 Thanked 911 Times in 576 Posts Mentioned: 43 Post(s) Tagged: 0 Thread(s)	Yup The Frozen North __________________ 2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished

06-10-2014, 12:54 PM	#13
Dipstik-sportech Senior Member Join Date: Oct 2012 Drives: 2013 BRZ satin white pearl sportech Location: Thunder Bay Ontario Canada Posts: 1,813 Thanks: 842 Thanked 911 Times in 576 Posts Mentioned: 43 Post(s) Tagged: 0 Thread(s)	U can find it for less that 2000$ if u search. It's a junk trans that's why its cheap The Frozen North __________________ 2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished

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05-29-2014, 10:47 PM	#4
Pacific Auto Master Installer Join Date: Apr 2013 Drives: Scion FRS Location: Orange County, CA Posts: 216 Thanks: 4 Thanked 144 Times in 57 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	IMO switch to stock then go to the dealer.

06-02-2014, 04:18 PM	#8
andrew20195 Senior Member Join Date: Mar 2013 Drives: 2013 Subaru BRZ Location: Baton Rouge Posts: 321 Thanks: 154 Thanked 104 Times in 78 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	The reason Subaru dealers aren't rebuilding these things under warranty is Toyota/Aisin has a unit replacement policy, and the dealerships "don't have the special tools required for disassembly or reassembly." I put that in quotes because there are plenty of generic tools that can be used, and the service manual has the complete procedures for overhauling these units. The dealership can order internal parts. So, if you have a trusted mechanic, it can be done.

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