flywheel lightening - how much to be taken off?

[rancido64]

Hey guys,

just looking to find out how much needs to be taken off the m20 flywheel when getting it lightened?

How much is the flywheel standard and how light does it need to be after?

Thanks
Phil

[hongkongfuey]

think its about 8.5-9kg standard the ones i had done were 5.9kg

[rancido64]

Cheers for the quick reply

[maf260]

When you're having the work done you want to take the metal from the engine-facing side of the flywheel. There's a handy lip of about 0.5mm you can skim down to - should be obvious when you look at it.

[rancido64]

^^^^
thanks for the info

[jimbob88]

When you're having the work done you want to take the metal from the engine-facing side of the flywheel. There's a handy lip of about 0.5mm you can skim down to - should be obvious when you look at it.

heres a pic of a comparison, helped me out no end, also theoretically it wont need balancing as you only removing material in a linear plane not drilling like some places do

[defjammin]

hi jimbob88 just out of interest, how did you do the machining, was done on a lathe or cnc machine or neither lol, if it was a lathe how did you put it on the lathe??

[DanThe]

It needs to be set properly if your not going to balance it afterwards

[jimbob88]

sorry i should of said it shouldnt need balancing.

i ddnt do the maching myself i took mine to an engine workshop i presume they lathed it

how do you mean by set properly dan?

[DanThe]

It needs to be set square to the tool, so you remove an equal amount of material from around the flywheel, if not it will be out of balance.

[defjammin]

im guessing a special adapter has to be made for it to go on a lathe but correct me if i am wrong??

[sweep]

I have just had mine lightned 2kg for my 2.7 build