Rather strangely, TODA Racing seem to be the only people I've seen post inertia values (I'll have to check, but it's probably the rotational inertia since they already said what the mass is.

http://www.toda-racing.co.jp/product...el/4g63-3.html

Here's a good example of same weight and different inertia:

http://www.toda-racing.co.jp/product...el/4g63-1.html

^For evo's I, II or III. Also 4.9kg (10.78lbs) but 0.46 rather than 0.54 of the VII and VIII. That's 15% less.

And this is probably the closest to not having a flywheel:

http://www.toda-racing.co.jp/product/flywheel/4k.html

6.16lbs and less than half the inertia of the evo's lightweight flywheel.

 

dumb question, can you resurface the pressure plate/clutch plate?

 

Pressure plate:
Not as such. Largely due to the fact that there isn't really a 'face' to... well... 're'. Sometimes, but this is for desparate cases usually, the surface where the pressure plate sits on the clutch is taken down slightly. I've only seen this done may be twice because the parts (flywheel/clutch plate/pressure plate) don't really match and it's a bit of a home-made job. But yes, it happens. Not recommended though. most of the time the flywheel is what's most worked on since there's a lot more material there.

Clutch plate:
Well, in the old days and I suppose if you really, really need to save money, you can actually 'refurbish' worn clutch plates. The organic plates can have more friction material pressed on to them and voila, you have an un-worn clutch surface. This would be as recommended as 'pressing' brake shoes where a similar thing happens to worn drum brake shoes. I think people stopped doing this about 30 years ago...