light flywheel 4age

[AE85coupe]

o.k heres the deal, i get free machining and balancing, my flywheel happens to be out at the moment, so i figure i may as well get it lightened

i'm sure someone has done this before, i was wondering where the best place to take meat out of the flywheel is? and if someone has any pics of it done? (its a red-top smallport flywheel)

and no i'm not gonna buy a blacktop one, and yes i know its risky, so don't bother telling me

i don't intend on taking huge dangerous amounts off

[Grrrrrrr!]

Talk to whoever is going to do the machining.. if they dont know where it is safe to take the material away from dont let them do it. If they have any doubts walk away from the idea.

I'm not against machining flywheels, i intend to lighten my own silvertop flywheel at some stage, just for more practice in the machine shop.

Not familiar with the redtop flywheel so not sure where or how much you can take off.

[AceSniper]

If ur real keen...
http://www.my-acoustic.com/Car/weight_i ... ywheel.htm

but im not sure what a redtop flys like? maybe find a cheap silvertop one an work it down like a blacktop one... shouldnt have issues?

[Grrrrrrr!]

thats pretty much what i plan on doing to the silvertop 20v flywheel, won't bother with lightening the inner bit like that guy did for the following reasons:

1) there isn't a lot of meat there to start with, and i like my ankles. (I have a very rusty spare silvertop flywheel i plan on feeding thru the bandsaw to see just how little meat there is there.

2) it wont have much effect, its too close to the axis of rotation, the weight needs to come off the outside edges as much as possible. You are trying to reduce teh moment of inertia, not the weight as such. the further out from the axis it is the faster it is moving, therefore the more kinetic energy is stored.

3) he has removed the lip that the dust and crap collects in to be forced out the drain holes. Now it will probably exit by working its way across the working surface of the clutch. Probably accounts for 3/5ths of SFA in the real world, but i'll keep it there.

[AceSniper]

I think ill stick with my 4.7kg billet

[Grrrrrrr!]

I think ill stick with my 4.7kg billet

So when are you going on holiday and leaving the car at home again????

[RedMist]

and no i'm not gonna buy a blacktop one, and yes i know its risky, so don't bother telling me

i don't intend on taking huge dangerous amounts off

You do realize that taking ANY material from a CAST flywheel is dangerous? What happens when you cut across a crack, which you will, do you think it makes the end result stable?

I have no idea as to why people want to risk their personal safety and the possibility of severly damaging their vehicle over something that will assist them very little if at all with performance.

[jondee86]

After much head scratching, I came up with this...



Cheers..... jondee86

[AE85coupe]

You do realize that taking ANY material from a CAST flywheel is dangerous? What happens when you cut across a crack, which you will, do you think it makes the end result stable?

I have no idea as to why people want to risk their personal safety and the possibility of severly damaging their vehicle over something that will assist them very little if at all with performance.

and yes i know its risky, so don't bother telling me

anyway.. thanks guys now i see how its done, looks like too much of a mission anyway

thanks for the pictures