What determines throttle responce?
- Thread starter Cya
- Start date
^yes. lightening the flywheel will make it rev quick. But I wouldn't JUST lighten the flywheel its that weight for a reason
With my intake/IC piping/FFIM/ 70mm TB and aluminum flywheel, my throttle responce is extremely sensitive, if that helps you any.
throttle sensitivity != throttle response.
Throttle sensitivity would be how much you have to move the throttle to increase power.
Bigger throttle bodies make the throttle sensitivity increase because they are only a significant restriction at a smaller percentage of the throttle range.
I've seen some throttle linkages (on a porsche and on a BMW) that make the plate angle non-linear with the pedal angle, which really improves the feel on bigger TB's, because then that critical lower 25% of throttle plate angle is spread across say 40% of the pedal travel, giving you more control where it matters, while still opening up all the way when its floored.
I believe the best definition of throttle response is how quickly the engine output changes to match the movement of the throttle.
Throttle response is affected by the volume and length of the intake tubing, the positioning of the throttle body or bodies, (how close they are to the cylinder,) and also on the engine management. How quickly the ECU/carb/whatever can respond to a change in air flow and add fuel will effect the response time.
The amount of vaccuum the engine makes would have something to do with it too, I think... Don't large duration cams reduce vacuum because of overlap, and help maximum flow but hurt throttle response?
Throttle sensitivity would be how much you have to move the throttle to increase power.
Bigger throttle bodies make the throttle sensitivity increase because they are only a significant restriction at a smaller percentage of the throttle range.
I've seen some throttle linkages (on a porsche and on a BMW) that make the plate angle non-linear with the pedal angle, which really improves the feel on bigger TB's, because then that critical lower 25% of throttle plate angle is spread across say 40% of the pedal travel, giving you more control where it matters, while still opening up all the way when its floored.
I believe the best definition of throttle response is how quickly the engine output changes to match the movement of the throttle.
Throttle response is affected by the volume and length of the intake tubing, the positioning of the throttle body or bodies, (how close they are to the cylinder,) and also on the engine management. How quickly the ECU/carb/whatever can respond to a change in air flow and add fuel will effect the response time.
The amount of vaccuum the engine makes would have something to do with it too, I think... Don't large duration cams reduce vacuum because of overlap, and help maximum flow but hurt throttle response?
I think the primary disadvantage with an Al flywheel is also its primary advantage. Less weight means when a positive force is applied to it, it will gain speed quicker. It also means that when resistance is applied to it, it will lose speed quicker, meaning it's a lot easier to stall. clutch engagements won't be as smooth.