Transmission Strength Comparison - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wparsons · 05-06-2013, 09:08 PM

Quote:

Originally Posted by Wes B.

How much power has the AZ6 withstood behind a built SR20DET? Anyone know?

It's not HP that breaks transmissions, it's torque. Since these engines don't have torque output like an SR20DET at the same HP levels they'll stand up much better.

ramiram1984 · 05-06-2013, 10:16 PM

Then you have to worry about axels and having stronger ones installed, etc etc. do some research guy before putting TTs.

Freeman · 05-06-2013, 10:54 PM

Quote:

Originally Posted by Wes B.

If I had a nickel for every time someone mentioned a small block Chevy swap...

Haha I'll be that guy then. How about a 572 aluminum block hemi to increase that low end torque.

Edit: there's no way it would fit though

Via my Note 2

OrbitalEllipses · 05-06-2013, 11:02 PM

Quote:

Originally Posted by Freeman

Haha I'll be that guy then. How about a 572 aluminum block hemi to increase that low end torque.

Edit: there's no way it would fit though

Via my Note 2

Chevy 350

xwd · 05-06-2013, 11:09 PM

Crawford was making a lot of torque down low and 475lb-ft at the same HP level. They popped a motor but the trans was okay.

Coheed · 05-07-2013, 12:08 AM

The transmission lives a short life at that power level. I wouldn't expect AP to still be using the factory transmission. These transmissions look to hold around 400wtq for some time, but I suspect failures to be common once these start seeing higher miles.

Tansey86 · 05-07-2013, 12:18 AM

Don said he was working on a transmission solution. Im assuming given the power levels hes making, he will be replacing damn near every part of that car.

Wes B. · 05-07-2013, 08:12 AM

Quote:

Originally Posted by wparsons

It's not HP that breaks transmissions, it's torque. Since these engines don't have torque output like an SR20DET at the same HP levels they'll stand up much better.

I know. When I said "power," I was referring to the torque of the engine. Still, if these engine are boosted to 300+ hp, they'll be putting out more torque than an SR20DET.

Quote:

Originally Posted by ramiram1984

Then you have to worry about axels and having stronger ones installed, etc etc. do some research guy before putting TTs.

Oh, I've done my research. I'll most likely be settling with FBM's 8.8 IRS rear differential conversion.

Quote:

Originally Posted by Coheed

The transmission lives a short life at that power level. I wouldn't expect AP to still be using the factory transmission. These transmissions look to hold around 400wtq for some time, but I suspect failures to be common once these start seeing higher miles.

This is exactly why I would like to locate a suitable replacement before installing anything crazy. The W55 from Marlin Crawler seems to be just what I am looking for. Just wondering what you guys had in mind.

wparsons · 05-07-2013, 09:40 AM

Quote:

Originally Posted by Wes B.

I know. When I said "power," I was referring to the torque of the engine. Still, if these engine are boosted to 300+ hp, they'll be putting out more torque than an SR20DET.

Stock SR20DET's make 202-210 lb/ft stock, which is around the torque these engines seem to make boosted at around 280-300whp (obviously depending on turbo selection).

My point was simply that at XXX hp an SR20DET is most likely going to have a lot more torque than an FA20 at the same hp, and the transmissions seem to be fine with 300whp SR20's all the time.

usptwins · 05-07-2013, 03:27 PM

R154, used V160/161, look on the supra forums. Hell, if you want a W55, look on the other forums. Its pretty easy. But, you might have to become a member of the forums to see the sale threads.

Wes B. · 05-07-2013, 10:06 PM

Quote:

Originally Posted by wparsons

Stock SR20DET's make 202-210 lb/ft stock, which is around the torque these engines seem to make boosted at around 280-300whp (obviously depending on turbo selection).

My point was simply that at XXX hp an SR20DET is most likely going to have a lot more torque than an FA20 at the same hp, and the transmissions seem to be fine with 300whp SR20's all the time.

I gotcha. Thanks!

Quote:

Originally Posted by usptwins

R154, used V160/161, look on the supra forums. Hell, if you want a W55, look on the other forums. Its pretty easy. But, you might have to become a member of the forums to see the sale threads.

How does the R154 compare (strength-wise) to the W55?

DavidV · 05-07-2013, 10:13 PM

The only story where anyone reported breaking anything trans related was when someone caught air while full throttle on track driving a turbo car, this story occurred way back in the day during track testing. Might have been John Visconti or Don? ..Correct me if I'm wrong anyone

SmsAlSuwaidi · 05-07-2013, 10:47 PM

Quote:

Originally Posted by DavidV

The only story where anyone reported breaking anything trans related was when someone caught air while full throttle on track driving a turbo car, this story occurred way back in the day during track testing. Might have been John Visconti or Don? ..Correct me if I'm wrong anyone

And axles have been proven to be a weak point too

Wes B. · 05-08-2013, 11:10 AM

Quote:

Originally Posted by DavidV

The only story where anyone reported breaking anything trans related was when someone caught air while full throttle on track driving a turbo car, this story occurred way back in the day during track testing. Might have been John Visconti or Don? ..Correct me if I'm wrong anyone

Gotcha.

Quote:

Originally Posted by SmsAlSuwaidi

And axles have been proven to be a weak point too

I'll most likely be settling with Full Blown Motorsport's 8.8 IRS rear differential conversion.

05-07-2013, 12:18 AM	#21
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)	Don said he was working on a transmission solution. Im assuming given the power levels hes making, he will be replacing damn near every part of that car. __________________ " I know a lot about cars, man. I can look at any car's headlights and tell you exactly which way it's coming. "

05-07-2013, 03:27 PM	#24
usptwins Toyota Soul Join Date: Aug 2012 Drives: 96 taco Location: Louisiana Posts: 528 Thanks: 725 Thanked 99 Times in 78 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	R154, used V160/161, look on the supra forums. Hell, if you want a W55, look on the other forums. Its pretty easy. But, you might have to become a member of the forums to see the sale threads. __________________ No replacement for Displacement??? Tell that to the people with a 2JZ.

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05-06-2013, 11:09 PM	#19
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05-07-2013, 12:08 AM	#20
Coheed Senior Member Join Date: Jun 2012 Drives: DGM BRZ Limited Location: Seattle Posts: 813 Thanks: 209 Thanked 225 Times in 157 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	The transmission lives a short life at that power level. I wouldn't expect AP to still be using the factory transmission. These transmissions look to hold around 400wtq for some time, but I suspect failures to be common once these start seeing higher miles.

05-07-2013, 10:13 PM	#26
DavidV Junior Member Join Date: Mar 2013 Drives: WJ Cherokee 04 Location: NY Posts: 5 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	The only story where anyone reported breaking anything trans related was when someone caught air while full throttle on track driving a turbo car, this story occurred way back in the day during track testing. Might have been John Visconti or Don? ..Correct me if I'm wrong anyone

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