DXD flywheel & Lighter flywheel discussion

[Sharkie]

Hmm, and I thought that flywheel is for balancing rotating masses, pistons, conrods etc.?

Ummm ... no .... pretty sure thats what the crank and balancing weights are there for .... .... flywheels are much more closely related to the clutch ....

How 'bout you have a look here at what a flywheel actually does ....

HowStuffWorks "Fly Wheels, Clutch Plates and Friction"

and a comparison between lightened and stock

Flywheel - Does a lightened flywheel actually benefit your car | Basics | CHICANE CULTURE dot COM

EDIT: and a really good explanation of all things flywheel including SMF and DMF ones .....

http://www.europeancarweb.com/tech/0...els/index.html

and yes, it does state that a flywheel that is too light can cause stalls .... but nothing about balancing rotational masses ....

[Transporter]

I obtained my knowledge by working on petrol and diesel engines for over 34 years (that includes 4 years in trade school) and the basics of automotive mechanics didn't change during that time. That doesn’t mean I don’t top up knowledge when new information becomes available.

Ummm ... no .... pretty sure thats what the crank and balancing weights are there for .... .... flywheels are much more closely related to the clutch ....

While these weights can balance the crankshaft completely, they cannot completely balance the motion of the piston, for two reasons. The first reason is that the balancing weights have horizontal motion as well as vertical motion, so balancing the purely vertical motion of the piston by a crankshaft weight adds a horizontal vibration. The second reason is... keep reading in these two links.
Engine balance - Wikipedia, the free encyclopedia
Crankshaft - Wikipedia, the free encyclopedia

Unlike, How Stuff Works and Chicane Culture dot com links
The text in the links above matches and widens info in BOSCH Automotive Handbook (references to 6th edition pages 459-463) I checked it.

Conclusion from my side:
By changing the flywheel for a lighter one - your engine will not explode or fail. You know it, you’ve done it in the past, right?