piston window

any of you guys heard about this mod.i have heard about it not sure if it would help the power of these little beast

Another great debate. :D
window or not...
Some thinks it's the best thing since white bread.
My personall expieriences tell me that it's not a big deal. It certainly does NOT hurt to have it, but I have motors out there winning w/no piston window. I choose not to waste my time w/it.

one more ?lt80 what about lighting the fly wheel

I've done that. :)
It's a good thing. I usually only do that if the motor will be flat track/TT raced.
I forget how many grams I took off. :(