Power limit for our transmission? TESTED YET? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

hmong337 · 09-20-2013, 02:29 AM

Does anybody know how much the gearbox can hold in terms of power? Torque?

...curious to know how hard the stock gearboxes have been pushed.

600tq?

cf6mech · 09-20-2013, 05:29 AM

The transmission is rated at 210ftlbs. of torque.

hmong337 · 09-20-2013, 09:19 AM

Quote:

Originally Posted by cf6mech

The transmission is rated at 210ftlbs. of torque.

Really?! Where did you get info?

Seems awfully low...

wparsons · 09-20-2013, 09:25 AM

That's what the manufacturer claims, but people are running double (or more) than that without it grenading. Internally it's very similar to the gearbox in an S15 silvia (SR20DET).

ZionsWrath · 09-20-2013, 09:45 AM

Does the AT have a listed TQ limit?

hmong337 · 09-20-2013, 10:35 AM

Crawford BRZ is using the stock gearbox, no?

pheoxs · 09-20-2013, 10:47 AM

The clutch slips at about 210ftlbs and I think don at accelerated said the tranny starts having issues around 350ftlbs

Tansey86 · 09-20-2013, 10:55 AM

The one thing this car has going for it is its weight. Given it only weighs 2700 lbs, having a tranny that is rated at a specific torque number in a heavier car(say 3200lbs), will last longer because of the weight difference.

People are running high hp on the manual and havent grenanded....yet. Down the line they will be dropping left and right by people running a decent amount of power. Both MT's and AT's have fallen to power.

King Tut · 09-20-2013, 11:27 AM

342 ft-lbs. TESTED.

Tansey86 · 09-20-2013, 12:00 PM

Quote:

Originally Posted by King Tut

342 ft-lbs. TESTED.

Care to elaborate? How did you exactly come to that number? Whats the life span of a transmission at that power level?

ZionsWrath · 09-20-2013, 12:04 PM

Quote:

Originally Posted by Tansey86

Care to elaborate? How did you exactly come to that number? Whats the life span of a transmission at that power level?

If someone knows after 1 year the lifespan at XXX torque level, it is not much/long

Tansey86 · 09-20-2013, 12:09 PM

Quote:

Originally Posted by ZionsWrath

If someone knows after 1 year the lifespan at XXX torque level, it is not much/long

True. Car needs to be out longer to really test maximum power thresholds I think.

ZionsWrath · 09-20-2013, 12:25 PM

I guess the longer you don't hear about trans explosions left and right the better lol

So count every day you don't know as better ?

King Tut · 09-20-2013, 12:28 PM

Quote:

Originally Posted by Tansey86

Care to elaborate? How did you exactly come to that number? Whats the life span of a transmission at that power level?

Math. The life span is 342 days as well.

09-20-2013, 02:29 AM	#1
hmong337 Emperor JDM Join Date: Jun 2013 Drives: '91 MR2 Gen3 3SGTE, '13 FRS Location: Onterrible, Canada Posts: 1,750 Thanks: 3,498 Thanked 909 Times in 495 Posts Mentioned: 20 Post(s) Tagged: 3 Thread(s)	Power limit for our transmission? TESTED YET? Does anybody know how much the gearbox can hold in terms of power? Torque? ...curious to know how hard the stock gearboxes have been pushed. 600tq? __________________

09-20-2013, 10:35 AM	#6
hmong337 Emperor JDM Join Date: Jun 2013 Drives: '91 MR2 Gen3 3SGTE, '13 FRS Location: Onterrible, Canada Posts: 1,750 Thanks: 3,498 Thanked 909 Times in 495 Posts Mentioned: 20 Post(s) Tagged: 3 Thread(s)	Crawford BRZ is using the stock gearbox, no? __________________

09-20-2013, 10:47 AM	#7
pheoxs Hold my beer n watch this Join Date: Nov 2012 Drives: '14 Fiesta ST / '91 240sx Location: Calgary, Alberta Posts: 782 Thanks: 214 Thanked 301 Times in 177 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	The clutch slips at about 210ftlbs and I think don at accelerated said the tranny starts having issues around 350ftlbs __________________ Nolan

09-20-2013, 10:55 AM	#8
Tansey86 Senior Member Join Date: Sep 2012 Drives: 2003 Subaru Outback Location: Long Island, NY Posts: 1,318 Thanks: 154 Thanked 529 Times in 300 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	The one thing this car has going for it is its weight. Given it only weighs 2700 lbs, having a tranny that is rated at a specific torque number in a heavier car(say 3200lbs), will last longer because of the weight difference. People are running high hp on the manual and havent grenanded....yet. Down the line they will be dropping left and right by people running a decent amount of power. Both MT's and AT's have fallen to power. __________________ " I know a lot about cars, man. I can look at any car's headlights and tell you exactly which way it's coming. "

09-20-2013, 11:27 AM	#9
King Tut NASA SpecE30 Racer Join Date: May 2012 Drives: 2006 Honda S2000 Location: Gulf Breeze, FL Posts: 7,279 Thanks: 607 Thanked 5,759 Times in 3,055 Posts Mentioned: 274 Post(s) Tagged: 10 Thread(s)	342 ft-lbs. TESTED. __________________ - King Tut Street/Track Car: 2006 Honda S2000 TT3 \|\| Race Car: 1987 BMW 325is SpecE30 \|\| Tow Vehicle: 2014 RAM 1500 EcoDiesel Sold Cars: 2012 BMW M3 \|\| 2013 Subaru BRZ \|\| 2012 Porsche Cayman R \|\| 2009 Chevrolet Z06 \|\| 2009 BMW M3 \|\| 2004 BMW M3 \|\| 2004 Nissan 350Z

09-20-2013, 05:29 AM	#2
cf6mech Senior Member Join Date: Sep 2012 Drives: FRS Silver LS1 swapped. Location: Texas Posts: 752 Thanks: 621 Thanked 766 Times in 302 Posts Mentioned: 39 Post(s) Tagged: 2 Thread(s)	The transmission is rated at 210ftlbs. of torque.

09-20-2013, 09:45 AM	#5
ZionsWrath Thanks Join Date: Apr 2013 Drives: BRZ Location: NY Posts: 4,163 Thanks: 5,989 Thanked 3,100 Times in 1,498 Posts Mentioned: 38 Post(s) Tagged: 3 Thread(s)	Does the AT have a listed TQ limit?

09-20-2013, 12:25 PM	#13
ZionsWrath Thanks Join Date: Apr 2013 Drives: BRZ Location: NY Posts: 4,163 Thanks: 5,989 Thanked 3,100 Times in 1,498 Posts Mentioned: 38 Post(s) Tagged: 3 Thread(s)	I guess the longer you don't hear about trans explosions left and right the better lol So count every day you don't know as better ?

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