Would you rebuild your gearbox or buy another? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

radroach · 08-26-2016, 06:49 PM

So say your syncros are worn or a tooth on 2nd gets chipped, I'm sure its happened to many a gearbox. When it comes time, what do you do: buy a brand new one, get a donor, or rebuild?

churchx · 08-26-2016, 08:02 PM

No one clear cut answer fitting for everybody. Too many unknown / undefined variables that may differ a lot for ones answering and where they are located. For example if car is still under warranty, how much gearbox costs new, how much costs donor gearbox, how much just worn parts, how much local shops charge for rebuild and how much for drop in replacement.

GsxrMe · 08-26-2016, 08:41 PM

Factory gearbox sucks, its a made out toilet paper.

mav1178 · 08-26-2016, 08:48 PM

yes.

humfrz · 08-26-2016, 09:05 PM

Quote:

Originally Posted by radroach

So say your syncros are worn or a tooth on 2nd gets chipped, I'm sure its happened to many a gearbox. When it comes time, what do you do: buy a brand new one, get a donor, or rebuild?

Back in the day ....... I would have (and I have) rebuilt the transmission.

Went to the junkyard, pulled out 3 transmissions, took them all apart, laid out the pieces in order, put all the best pieces back in the best case, put the rest of them back together, returned them to the junk yard ...... told them none of them fit.

(sorry, times were tough .... we were poor......

)

Now, if I had transmission problems, I'd use that as justification to get a new car ......

humfrz

weederr33 · 08-26-2016, 09:43 PM

No.

Tcoat · 08-26-2016, 10:06 PM

Quote:

Originally Posted by churchx

No one clear cut answer fitting for everybody. Too many unknown / undefined variables that may differ a lot for ones answering and where they are located. For example if car is still under warranty, how much gearbox costs new, how much costs donor gearbox, how much just worn parts, how much local shops charge for rebuild and how much for drop in replacement.

This^

Quote:

Originally Posted by mav1178

yes.

This^

Quote:

Originally Posted by weederr33

No.

This^

Quote:

Originally Posted by humfrz

Now, if I had transmission problems, I'd use that as justification to get a new car ......

humfrz

And especially this ^^^^^^^

justatroll · 08-26-2016, 11:51 PM

Here's a clue: I just rebuilt a trans on my other car.
Working used trans ~350
ONE (used but mostly new) gear for the rebuild ~350.

You do the math

DieselBones · 08-31-2016, 11:22 PM

Factory gearbox with low mileage on eBay shipped for around 750

Sent from my iPhone using Tapatalk

cdrazic93 · 09-01-2016, 04:16 AM

Get the upgraded gearset (PAR?) then use that as an excuse to get a turbo!

JacksTrans · 09-28-2016, 12:14 PM

If you've got a few worn synchros, maybe a fork and synchro sleeve that needs to be replaced, then a rebuild is a good option, especially if you'll be getting back a trans that is massaged to shift better than OEM.

If you have broken a tooth on a gear then it gets a little more expensive, but frankly, the gears in this version of the AZ6 are not horribly expensive. Retail on the synchro gears is between $80-120.

That being said, if 3rd or 4th is broken, then there's a high probability that the mating gear on the countershaft has sustained some damage. That shaft is almost the cost of a good used core, so that makes the decision a lot easier to make!

8RZ · 09-28-2016, 12:19 PM

Just skip second gear.

MarkR171 · 09-28-2016, 12:29 PM

[ame="https://www.youtube.com/watch?v=bbKGRESi6ME"]Sequential 6spd Toyota 86 by Holinger - YouTube[/ame]

churchx · 09-28-2016, 12:49 PM

DO WANT!! and probably will never afford

08-26-2016, 06:49 PM	#1
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	Would you rebuild your gearbox or buy another? So say your syncros are worn or a tooth on 2nd gets chipped, I'm sure its happened to many a gearbox. When it comes time, what do you do: buy a brand new one, get a donor, or rebuild?

08-26-2016, 08:41 PM	#3
GsxrMe Senior Member Join Date: Jul 2015 Drives: Late 2014 Subaru BRZ Location: Cape Coral, FL Posts: 557 Thanks: 20 Thanked 183 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	Factory gearbox sucks, its a made out toilet paper. __________________ 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

08-26-2016, 09:43 PM	#6
weederr33 Airborne at your service Join Date: Sep 2014 Drives: '17 BRZ Series.Yellow Location: El Paso, Texas Posts: 6,335 Thanks: 4,536 Thanked 5,599 Times in 2,936 Posts Mentioned: 33 Post(s) Tagged: 2 Thread(s)	No. __________________ Series.Yellowbird - http://www.ft86club.com/forums/showthread.php?t=122135 MS, CSCS, TSAC-F, CPT

08-26-2016, 11:51 PM	#8
justatroll Senior Member Join Date: Dec 2015 Drives: Full race 4cyl boxer Location: CO, USA Posts: 587 Thanks: 310 Thanked 510 Times in 269 Posts Mentioned: 20 Post(s) Tagged: 1 Thread(s)	Here's a clue: I just rebuilt a trans on my other car. Working used trans ~350 ONE (used but mostly new) gear for the rebuild ~350. You do the math __________________ Arguing with an engineer is like wrestling with a Pig in the mud. You are never going to win and after a couple of hours you realize that he likes it.

09-01-2016, 04:16 AM	#10
cdrazic93 Junior Join Date: Aug 2013 Drives: a car Location: Probably at school Posts: 4,341 Thanks: 3,184 Thanked 2,512 Times in 1,502 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	Get the upgraded gearset (PAR?) then use that as an excuse to get a turbo! __________________ "Ah! What music! They could have never imagined, those pioneers who invented the automobile, that it would posses us like this, our imaginations, our dreams. Men love women, but even more than that, men love CARS!"-Lord Hesketh

08-26-2016, 08:02 PM	#2
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	No one clear cut answer fitting for everybody. Too many unknown / undefined variables that may differ a lot for ones answering and where they are located. For example if car is still under warranty, how much gearbox costs new, how much costs donor gearbox, how much just worn parts, how much local shops charge for rebuild and how much for drop in replacement.

08-26-2016, 08:48 PM	#4
mav1178 Senior Member Join Date: Apr 2013 Drives: 2005 Toyota Camry Location: 91745 Posts: 6,562 Thanks: 493 Thanked 6,093 Times in 3,029 Posts Mentioned: 95 Post(s) Tagged: 3 Thread(s)	yes.

08-31-2016, 11:22 PM	#9
DieselBones Junior Member Join Date: Aug 2016 Drives: 2013 Scion FR-S 6MT FA20 Location: Des Moines, IA Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Factory gearbox with low mileage on eBay shipped for around 750 Sent from my iPhone using Tapatalk

09-28-2016, 12:14 PM	#11
JacksTrans Join Date: May 2016 Drives: Scion FRS - "FRSKY" Location: Colorado Posts: 27 Thanks: 4 Thanked 56 Times in 20 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	If you've got a few worn synchros, maybe a fork and synchro sleeve that needs to be replaced, then a rebuild is a good option, especially if you'll be getting back a trans that is massaged to shift better than OEM. If you have broken a tooth on a gear then it gets a little more expensive, but frankly, the gears in this version of the AZ6 are not horribly expensive. Retail on the synchro gears is between $80-120. That being said, if 3rd or 4th is broken, then there's a high probability that the mating gear on the countershaft has sustained some damage. That shaft is almost the cost of a good used core, so that makes the decision a lot easier to make!

09-28-2016, 12:49 PM	#14
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	DO WANT!! and probably will never afford

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