light weight flywheel
No cons unless you consider feathering the clutch on take off compared to idling away.
Pros, great throttle response and jake brake engine braking when taking the foot off the gas.
Look how many lightweight flywheels get sold vs. standard heavy units.
Cons: Not street friendly, tend to put more wear on clutches, revs drop quicker. NOT optimal for 1/4mi racing for most cars. RPM drop is one of the bigger issues with 1/4mi racing.
IMO that was one thing I left in the car was a Steel FW only for the simple fact that I felt it was better for driveability and racing. Some people LOVE LW Fly Wheels, some cant stand them. Depends on what you can tolerate.
Another thing to keep in mind is that not all lightweight flywheels are created equal. I have the 18lb Monster option. Ive seen some 12lbers out there, those i can see being a little too light, but 18lbs seems to be right about where it should. especially when you consider that i have a beefier pressure plate so some of that weight is counteracted.
I generally suggest guys who daily drive or drag race their cars stick with the 28lb flywheel as it is the stock weight, so there are no driving style changes or loss of rotational mass (which is crucial to getting you out of the hole at the track).
I suggest the 18lb for guys who road race or autocross and need a little quicker RPM pickup off the corners. It does require some driving style changes, but most get used to the new way the engine revs (and comes down in RPM) fairly quickly.
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Vehicle weight and gearing are another thing to consider when choosing between a lightweight and standard flywheel, but I feel the biggest thing that can magnify the difference is the friction material of the clutch. As a grippier unit that is not as easy to slip is going to compound changes especially when coming from a stock clutch. Some people enjoy a challenge though, so there are different strokes for different folks.




