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How many passes?

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Chumpaumpalumpa

Proven Member
1,554
303
Jun 16, 2014
La Habra, California
So I'm curious about you guys who have been tracking your car. How many passes do you currently have or how many passes do you normally get before you:
Break the trans
Break the tcase
Break the Rear diff
Wear the clutch out
etc

I searched and found nothing of the sort. This would be good info for anyone looking to attempt to gauge their "parts life" if they plan on taking the car to the strip. Obviously there are a ton of different variables that affect this which is why I am asking about YOU personally. Please include what trans, tcase, rear end, clutch, power, etc you have; anything that has significance to the question. Both auto and 5spd welcome. Any info at all is helpful because as of now there is no thread like this.
 
Lol seriously? there has been tons of it lately. If your making 300ft*lbs, it lives forever, if it's 450ft*lbs, 100 passes, if its 600ft*lbs, not many passes, and at ~1000ft*lbs, it's instant failure.
 
Lol seriously? there has been tons of it lately. If your making 300ft*lbs, it lives forever, if it's 450ft*lbs, 100 passes, if its 600ft*lbs, not many passes, and at ~1000ft*lbs, it's instant failure.
Thanks for that, you're talking trans right? Yea I haven't found crap and have been gone for a bit. Haven't seen any of it. What do you usually get out of your clutches?
 
It all depends on the driver and power level I'm in the 300hp 12 second range and my clutch lasted 3 seasons of racing haven't broke a axle or tranny yet
 
Depends on power and how car is driven. Weight also comes into play. I have broken well over 20 trannies in my dsm life probably. Never broken any of those at the track. Always on the street. I have never broken a tcase. I broke one rear end, the 3 bolt in my 91 Talon when I was in the mid 11's with it. Thing I mostly break is the center diff (if stock) and 3rd gear. Always on street tires. Broken a few clutches but that stopped when I started running puck discs. I have only broken only one of those in 10 years. Usually I run an ACT pressure plate with a 4 puck disc. Indestructible. ;)
 
So I'm curious about you guys who have been tracking your car. How many passes do you currently have or how many passes do you normally get before you:
Break the trans
Break the tcase
Break the Rear diff
Wear the clutch out
etc

I searched and found nothing of the sort. This would be good info for anyone looking to attempt to gauge their "parts life" if they plan on taking the car to the strip. Obviously there are a ton of different variables that affect this which is why I am asking about YOU personally. Please include what trans, tcase, rear end, clutch, power, etc you have; anything that has significance to the question. Both auto and 5spd welcome. Any info at all is helpful because as of now there is no thread like this.

Depends on torque, driver, weight of the car, etc. With that being said: Car is light, makes 574 tq on STMs Mustang Dyno, and never broke anything. My transfer case and rear end have over 40 passes on them. Stock Axles DIAF, and never had any issue with the trans breaking.
 
Depends on power and how car is driven. Weight also comes into play. I have broken well over 20 trannies in my dsm life probably. Never broken any of those at the track. Always on the street. I have never broken a tcase. I broke one rear end, the 3 bolt in my 91 Talon when I was in the mid 11's with it. Thing I mostly break is the center diff (if stock) and 3rd gear. Always on street tires. Broken a few clutches but that stopped when I started running puck discs. I have only broken only one of those in 10 years. Usually I run an ACT pressure plate with a 4 puck disc. Indestructible. ;)
Thank you this is the kind of stuff I was hoping for.

And for everyone I know it depends on a lot of stuff, that was in my first post. That is the point of this is to include those factors to get an idea of how stuff lasts with those different variables
 
Depends on torque, driver, weight of the car, etc. With that being said: Car is light, makes 574 tq on STMs Mustang Dyno, and never broke anything. My transfer case and rear end have over 40 passes on them. Stock Axles DIAF, and never had any issue with the trans breaking.
Stock trans? Whats your launching technique?
 
Stock trans? Whats your launching technique?

Preload with staging brake and go. I'm on a faceplated trans now, but my old 110k mile stock transmission survived over 40 passes at 500+ tq on a heavier car with no staging brake. Only thing I had to do was weld the center differential...that blew up after 2 passes. I drove that trans hard, but never shifted too fast or hard and I think definitely helped.
 
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