Flywheel Machining

[Wozza244]

Im new to this i have only ever installed second hand clutch plates before (times were tough ) and never a new one, i have bought a new Exedy Safari for the cruiser and im told i need the flywheel machined? Can i get away with it?

[daz4b]

for about $40 get it machined easier to do it now than pull gearbox back out daz

[Wozza244]

What places do this job? I live in Country NSW

[daz4b]

any brake and clucth place where do you live

[hj 45]

Any diesel engine reconditioners in the area should be able to put you in the right direction.

[coxy321]

If you can't find a workshop that'll do it, and providing your flywheel hasn't copped a flogging, you can get away with hitting it with some sand paper to roughen it up a bit (take off the polished finish), and wipe over with some brake clean or similar. If you have hot spots or high/low spots, find someone to machine it.

[LUXOUT]

flywheel not machined = no warranty from exedy.......your choice

[mavzilla]

warranty from exceedy??????????????? are you kidding,
if it dont look to bad sand it , clean it and all is good. had a spring break in a vw transporter at 3000km in the plate, 60 year old driver work ute, was told no warranty due to driver doing burnouts or as such. ive been in the trade for 20 years and never acheived a warranty out of them clowns ever. yes the flywheel was machined !!!!

[RAY185]

For me it's not really about warranty, I care about vibrations and clutch shudder. Plus I wouldn't like his chances on warranty with any brand clutch since it's a DIY home job.

Normal clutch operation generates alot of friction and heat that is absorbed and disspated by the mass of the flywheel. Offroad or extreme operation compounds this (6.5 Diesel V8 - I'm sure you don't drive it like you're driving Miss Daisy). The thermal stresses can cause warpage, hard/hot spots and in extreme cases, heat cracks in the surface of the flywheel (cracks usually mean replace flywheel though). Similar to brake discs, you want a dead flat surface for optimum performance and your best shot at no vibrations/shudder/squeal.

IMHO you'd be kicking yourself if your new you beaut clutch was shuddering after you put that cumbersome box/transfer on just because you were too lazy/tight to spend $70 odd on a flywheel machine. Each to their own though and YMMV.

[danssurf82]

is the safari a heavy duty? cause if it is they dont offer warranty in any case...

how far from syd are u? i know a place who machines flywheels on sundays!!!!!

[ferog]

I would have it machined get it done and you wont regret it. We put a safari in mine and didn't machine it, (just sanded it) and now I have annoying clutch shudder.

[v840]

I was told today that flywheels must be machined with a specialist tool and the old lathe/bridgeport isn't up to snuff.


Anyone know if there's any truth in this or have I been using the wrong coloured shackles???

[Wozza244]

Wow, thanks for the replies fellas now this is what a good thread full of opinions and info is all about!!

It is shiny but doesnt appear to be warped or any discolouration.

Ok well looks like i might have to take a trip to Tamworth or south to Muswellbrook to find a place that does it.

Thanks again.

[bigbrowndog]

Cheers, It is my understanding that if the fly wheel is not machined that the warranty is void if you need to claim.
It may pay to check this out, anyway.

[bigbrowndog]

2H flywheel after machining, cheers

[chunks]

Spend couple of hundred bucks on a clutch, all the effort to rip the box out...you would have to be an idiot not to machine the flywheel for an extra $60 or so bucks. Throw a rear main seal and spigot bearing in while your at it.

[Wozza244]

Yeah im gonna get it done, its worth it for sure.
I got a new spigot ready to go in but im not doing the rear main its not that old and not a sign of a leak anywhere. If it goes i will do it then.

[Ruffy]

I was told today that flywheels must be machined with a specialist tool and the old lathe/bridgeport isn't up to snuff.


Anyone know if there's any truth in this or have I been using the wrong coloured shackles???

Flywheels should be ground not turned. As the picture in the above post shows.
If the machining is in a radius it will not be in and be more prone to shuddering and hot spots again.

Dan

[Wozza244]

Ok flywheel was scored im glad i got it sorted!!

Cost me $44 and an hr wait.

Now i need some muscle to lift the box back in tomorrow and hopefully i lined up the clutch disc right! Because we all know that can be a big headache!