The '07 seems to have an abundance of flywheel. By that I mean that the flywheel must be big and heavy. Is there a design/engineering reason for this?

 

Someone correct me if I'm wrong but I don't think the flywheel design has changed since 2004 when they converted over from the 2.0 to the 2.2 motor. With the shorter redline of the 2.2 motor, perhaps Honda increased the weight of the flywheel to prevent the car from falling out of VTEC in between shifts.

 

Bigger flywheel for MY04+ cars.

 

The heaver weight of the 04 + flywheel is part the reason why the increase of torque. More moving mass means more torque. The 04 + cars have about 10 ft. pounds more torque than the early cars do.

The AP2 wheel is about 18 pounds and the AP1 is 14 pounds

AP1 flywheel

 

Am pretty sure the ap2 flywheel is a lil heavier then 18 pounds

 

I seem to recall someone posting that the AP2 flywheel was upwards of 20lbs. Don't quote me on that though