Over the long term -- 3 - 5 years -- which puts less wear and tear on our engine, supercharger or TT?

 

Speaking only in terms of wear on the internals....the TT .

A s/c boosts immediately adding more stress off-the-line, but really it depends on your right foot.

 

I would have to say supercharger. Fell free to correct me if I am wrong but...

1) Turbos are not good for daily driving.

2)You have to warm them up and cool them down or you will greatly reduce the life of the turbo due to cold or hot oil.

I have a Toyota Supra T-78 turbo and I have to warm up my car for about 5 minutes everytime I drive it and cool it down for another 5 minutes before turning the car off.

 

There are so many variables here, its very hard to make a blanket statement that one is worse than the other. Some things you may want to keep in mind:

Turbos generate a lot of underhood heat...could cause problems but may not. Turbos can potentially make a ton of torque, which might stress internals more than a supercharger, but it depends on the setups you're comparing. The fact that you need to let the car cool down with the turbos before shutting down doesn't really hurt anything other than spending more time idling than a supercharger. The cool down is for saving the turbos rather than for the engine itself.

Superchargers put loads on the nose of the crank that could result in failure long term. This is usually only an issue in very high boost applications though, and I wouldn't expect any problems from the ATI kit. To make the same horsepower as a comparable turbo setup, the supercharger may need to run more boost to make up for paristic losses for driving the supercharger...which might mean more stress on the engine itself.

 

I agree totaly, that there are more external (possible)problems to worry about with the TTs, but as far as wear on the motor itself(internals) the s/c will have the extra bottom end torque. Boost off-the-line presents more stress than boost coming on after the car is rolling.

When all is said and done, my personal preference in this application would be the s/c. TTs are capable of much more useable power on street applications, but with stock internals you will not be able to boost at higher levels than the s/c.
Less maintenance, lower costs, and boost throughout the rpm range make the supercharger my choice.

 

I still like the TT setup. That's why I have a Toyota Supra T-78 Turbo and am going to get the GReddy turbo for my Z.

 

i'd prefer the turbo set-up as well. i had a turbo eclipse and miss that little jolt of power when boost builds up, plus the sound of the BOVs. Car had 120k miles on it when i sold it, never had probs with the turbo. I wasn't one to let it cool off when before i turned the car off, but they do have timers to do that for you..turn the car off but it continues to run for x-time (that you set) to cool the turbo(s), then shuts off. each has its pros and cons as does anything.

jon

 

I think s/c will give you faster times at the strip(running on stock internals)