S4 drive train weak link(s)?
12-19-2003, 12:52 AM
#16
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Marc,
I have a hard restraining myself when it comes to cars as it is. After going through all that trouble to find a 5spd., you're making me feel like I need to buy an automatic for my supercharged 928!!!!
Seriously though, any idea on how the TT (auto/manual) would handle that much torque?
-Gary
I have a hard restraining myself when it comes to cars as it is. After going through all that trouble to find a 5spd., you're making me feel like I need to buy an automatic for my supercharged 928!!!!
Seriously though, any idea on how the TT (auto/manual) would handle that much torque?
-Gary
12-19-2003, 03:47 PM
#20
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The broken drive shafts and trans gears which can happen on a RACE car running 12 inch wide RACE Slicks has little to do with what will happen for a street car ON STREET TIRES . The rapid repeated continuous acceleration and deceleration of racing is so very different . All that torque in a street car will literally go up in smoke , the tires do not have that kind of traction . The stress of racing is such that at a typical Nascar event 500 miles some cars will break , the 24 hrs of Daytona just FINISHING is winning !! perhaps as Marc T stated ...." how much I do not know..." sums up rather well the question of how much torque is too much . No one has objectively and under controlled circumstance actually TESTED with the possible exception of Porsche and they are not talking . My comments are just opinions and there is no shortage of those .............
12-19-2003, 03:56 PM
#21
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I guess the question, is if the transmission is the weak link, or the torque tube, or other components...
Because for those people building high horsepower cars, it is important to know what is likely
to break. In some ways, it is nicer to have tires be the weak link, or even halfshafts, or other parts.
It is not cheap to replace the transmission, if that is what ends up breaking under heavy loads.
Although so far, it looks like the entire drivetrain my be fine, and the tires may take the brunt
of the abuse with a high powered street car...
I remember in my old 280Z, when I put big flares on it, and huge rubber, and boosted my horsepower, the tires would actually hook up the power, and I started breaking U-joints on a regular basis.
So it was easy to see what the weak link was...
Because for those people building high horsepower cars, it is important to know what is likely
to break. In some ways, it is nicer to have tires be the weak link, or even halfshafts, or other parts.
It is not cheap to replace the transmission, if that is what ends up breaking under heavy loads.
Although so far, it looks like the entire drivetrain my be fine, and the tires may take the brunt
of the abuse with a high powered street car...
I remember in my old 280Z, when I put big flares on it, and huge rubber, and boosted my horsepower, the tires would actually hook up the power, and I started breaking U-joints on a regular basis.
So it was easy to see what the weak link was...