Transmission and rear end torque ratings! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

SykotikCamber · 11-03-2015, 09:56 PM

So I'm planning on building a S13 JDM coupe with a 4bt cummins motor in it. Well I need to know if the transmission and rear end will hold up to the close to 300+ ft/lbs of torque. By the way I will have a standard transmission of course. So if anybody knows the torque ratings of the stock transmission and rear end it would be appreciated. If need be I can always beef up the rear end and put a different tranny in it, which if anybody has any ideas, throw them at me. And the car will be used to pull my track car on a trailer and drift spares on the top so the tranny needs to be tough. Thanks in advanced.

*anti tyler* · 11-04-2015, 04:47 PM

You need to worry about the clutch not tranny. Yet the car itself isn't meant for towing so I can't comment on that aspect.

However my stock 5 speed tranny is holding 375ft lbs just fine...

But stock open differential? I wouldn't tow anything on a trailer with that anyway. No sense in breaking things when you can swap them out for more appropriately heavy duty things like an LSD and stronger axles...

SykotikCamber · 11-04-2015, 07:39 PM

Oh it was going to have the lsd anyway for sure. I didnt think about the clutch thats a good idea. Definitely need to upgrade that!

Frank_Jaeger · 11-04-2015, 09:16 PM

As long as you're not shocking the drivetrain the trans will be fine. No sticky dragstrip launches for you.

The rear diff is apparently indestructible.

SykotikCamber · 11-04-2015, 09:22 PM

Lol cool I'm going to take it easy on that car anyways. My drift S14 will be my car I take it rough though. She'll have a SR22DET in it lol.

cotbu · 11-05-2015, 10:17 AM

Too many red flags in this thread.

How many regular miles you got on it? None, it takes premium!

11-03-2015, 09:56 PM	#1
SykotikCamber Join Date: Nov 2015 Location: Louisiana Age: 26 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	Transmission and rear end torque ratings! So I'm planning on building a S13 JDM coupe with a 4bt cummins motor in it. Well I need to know if the transmission and rear end will hold up to the close to 300+ ft/lbs of torque. By the way I will have a standard transmission of course. So if anybody knows the torque ratings of the stock transmission and rear end it would be appreciated. If need be I can always beef up the rear end and put a different tranny in it, which if anybody has any ideas, throw them at me. And the car will be used to pull my track car on a trailer and drift spares on the top so the tranny needs to be tough. Thanks in advanced.

11-05-2015, 10:17 AM	#6
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 49 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	Too many red flags in this thread. How many regular miles you got on it? None, it takes premium! __________________ LoverTechnologies "Half Broken Things!"

11-04-2015, 07:39 PM	#3
SykotikCamber Join Date: Nov 2015 Location: Louisiana Age: 26 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	Oh it was going to have the lsd anyway for sure. I didnt think about the clutch thats a good idea. Definitely need to upgrade that!

11-04-2015, 09:16 PM	#4
Frank_Jaeger Zilvia FREAK! Join Date: Jan 2012 Location: Port Charlotte, Florida Age: 32 Posts: 1,352 Trader Rating: (1) Feedback Score: 1 reviews	As long as you're not shocking the drivetrain the trans will be fine. No sticky dragstrip launches for you. The rear diff is apparently indestructible.

11-04-2015, 09:22 PM	#5
SykotikCamber Join Date: Nov 2015 Location: Louisiana Age: 26 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	Lol cool I'm going to take it easy on that car anyways. My drift S14 will be my car I take it rough though. She'll have a SR22DET in it lol.