My experience parallels that of cdelena. I have the Toda flywheel and Star stage II lightened clutch. Of all the mods (header, etc.) I feel the Toda and clutch have given the most noticeable acceleration/performance gains. The engine revs much easier with a quick blip of the throttle as well, for rev matching/heel-toe, etc.

Sideways, what type of clutch do you have? Perhaps it grabs so readily that it makes it more difficult to get underway from a stop?

 

[QUOTE]Originally posted by Sideways
[B]

I do not understand how you can say there shouldn't be any torque loss.

 

i'm with gernby 100%.

 

On the other hand, 1 lb. of unsprung weight (brakes) is worth several times more than 1 lb. of sprung weight (exhaust, header).

 

Reducing unsprung weight will help with handling and ride but when speaking in terms of acceleration, 1 lb of unsprung weight is worth exactly 1 lb of sprung weight. Rotational weight is a different story and when you are talking about wheels , for example, this is both rotational and unsprung so a reduction in mass (inertial or mass distribution more importantly) will improve acceleration more than the same weight reduction on a non-rotating component.

This is also true for the flywheel. Changing the mass of a flywheel will not increase or decrease torque or hp. Certain dyno's will measure a difference in output because they are based on inertial/how fast a vehicle can accelerate a known mass. Although your hp won't increase with a lighter flywheel, your acceleration will and that is what is important. There is never a torque loss - the engine will loose inertia and this means it will be easier to stall when starting out and conversely easier to accelerate.