Flywheel question

[Svenerachi1]

Okay, my noobie colors are about to show:
On an engine with an automatic transmission, there is no flywheel correct?

If this is so, what is used instead, how does the automatic transmission work?

[voorhees]

while your at it someone please explain the different differentials and what they do. (please)

[ivwarrior]

A auto transmission uses a "flex plate" instead of a flywheel. The torque convertor is bolted to this, and it's output is splined to the input shaft of the transmission.

http://auto.howstuffworks.com/automatic ... ission.htm (http://auto.howstuffworks.com/automatic-transmission.htm)


http://auto.howstuffworks.com/differential.htm

[Svenerachi1]

ok, so is there any way to increase drivetrain performance with an AT?

[Wiscon_Mark]

tranny cooler, better fluids, performance building (done by a specialist, $$$)

[scottzg]

a tranny cooler is usually a wise investment and can be done by an amateur with proper instructions.

Generally, though, a manual is the performance choice until you are running a fair bit of power and are drag racing, and when you are, usually you don't mind dropping the cash to have a properly built automatic.

For on-the-road performance, learning to hold the gas when you brake into a turn will keep the AT from jumping up a gear while braking into a turn. It takes some practice; i suck at it. It's also a bit harder on the brakes.

Slightly OT, gotta post what i know :)

[Wiscon_Mark]

while your at it someone please explain the different differentials and what they do. (please)

front and rear differentials power the front and rear axles, the center differential negotiates the power down the driveshaft to each of the two differentials.

[shazapple]

Continuous AWD: Subaru manual transmissions use Continuous AWD, normally 50/50 front-to-back power split and use a mechanical viscous center differential to to vary the power split when there is a loss of traction.

Active AWD: Subaru's automatic transmission use Active AWD, mostly front wheel drive (90/10 front/back) and uses traction sensing computer input to electronically vary the front to rear power split via a hydraulic multi-plate transfer clutch.

VTD AWD (variable torque distribution). New in 2001, VTD transfers powers front to back electronically. The power split is 45/55 front/rear and the rear wheel bias is designed for a more luxury car feel as opposed to the front bias of the Active AWD system. Usually 45/55 front to back split but that varies according to wheel slippage.




You can also get different Torque converters for an automatic transmission

[Huffer]

Here ya go:

http://www.importperformancetrans.com/subaruauto.shtml