Pros/cons of lightened flywheels on stroker engines Options

[Tdskip]

Good morning. On big Type4 engines that are going to be used on the street, it appears that keeping a stock flywheel is a plus for drivability but I’m also wondering if the bigger engines have enough torque that they can handle it lighter flywheel for a bit more zing of an experience.

The one that was on this 2.7 L motor I’m sorting out was shaved down to 12.3 pounds which seems a bit to light for street use.

EDIT - did some researching it appears that too light of a flywheel will make the car a pain on the highway, so maybe just stick with stock weight?

[Jack Standz]

Good morning. On big Type4 engines that are going to be used on the street, it appears that keeping a stock flywheel is a plus for drivability but I’m also wondering if the bigger engines have enough torque that they can handle it lighter flywheel for a bit more zing of an experience.

The one that was on this 2.7 L motor I’m sorting out was shaved down to 12.3 pounds which seems a bit to light for street use.

EDIT - did some researching it appears that too light of a flywheel will make the car a pain on the highway, so maybe just stick with stock weight?

Generally, light car, light flywheel. Heavy car, heavy flywheel. IMO a very well-balanced motor is much more important no matter if the flywheel is light or heavy (within reason, as you can go too light for a street car).

Cars with lightened flywheels have a more on/off feel when hitting the accelerator. Some like that, some don't.

A lightened flywheel will allow your motor to spin up faster, but also spin down faster too. This can be and usually is much harder on the motor's thrust bearings. But, who's gonna let that stop them?

BTW, torque not an issue here. Normally, a larger motor has more torque. And a lighter flywheel needs less torque to spin it. So maybe the question is how would you like the motor to behave? Me? I like a light flywheel.