URGENT: Does this Flywheel need machining??

Mr Starlet · Postby **Mr Starlet** » Fri Jul 11, 2008 12:28 pm

Hi everyone

I pick this up from a forum member and about to install but wondering if it'll need to be machined or not. It's urgent because we're planing to install it tomorrow.

From the photo below, looks like it was once used with a performance clutch, there's quite a few shudder looking marks, how significant are these marks. I'm planing to use brand new Exedy standard clutch and pressure plate, would it smooth out after a while of driving?

Sound like alot of dumb Qs but I really have no idea when it comes to clutch.

Any help would be greatly appreciated.

Cheers
Minh

http://img234.imageshack.us/img234/1000/p5171176zt5.jpg
http://img234.imageshack.us/img234/4123/p5171175rd2.jpg
http://img76.imageshack.us/img76/3999/p5171177al3.jpg

corners · Postby **corners** » Fri Jul 11, 2008 12:41 pm

Hey Minh

Definetly!!!

Each time a clutch is replaced a flywheel is typically machined.
Those marks you can see are what as known as \"hot Spots\" where the clutch had binded quickly to the flywheel thus making a high temp mark.
Typically a flywheel you not look shiny and should have a reasonably flat surface to it. Ie no dips/divits.

Hope that helps.

Jaron

Jimmy · Postby **Jimmy** » Fri Jul 11, 2008 12:41 pm

I would have no idea whether it does or doesn't need machining but i reckon your best bet is to take it to your local clutch place and get their opinon.

Mr Starlet · Postby **Mr Starlet** » Fri Jul 11, 2008 12:49 pm

thanks jcs86, I was hoping I didn't have to but looks like I have no choice. Out of curiosity how will it drive without being machined? shudder like crazy? or it's not as bas as it looks? I've also heard that shuddering is common with light weight flywheel and heavy duty clutch and pressure plate, so how will standard clutch and pressure affect the equation?

Trying to weigh up the options, and see if it's worth machining, or is it pointless and it will be the same again?

corners · Postby **corners** » Fri Jul 11, 2008 12:51 pm

Mr Starlet wrote:thanks jcs86, I was hoping I didn't have to but looks like I have no choice. Out of curiosity how will it drive without being machined? shudder like crazy? or it's not as bas as it looks?

you may get a bit of shudder. Machining is more so for to help with the life of the flywheel.

If you take it to a local clutch or repco they should be able to machine it on the spot for $50 or less. It only takes about 10 mins.

Otherwise you could ask for their opinion.

fattima · Postby **fattima** » Fri Jul 11, 2008 1:16 pm

Machine it, it is a big job to do a clutch change. You don't want to have to pull the gearbox out again just because you tried to save $50.

manga_blue · Postby **manga_blue** » Fri Jul 11, 2008 1:40 pm

Definitely needs machining.

Steampunk · Postby **Steampunk** » Fri Jul 11, 2008 1:44 pm

Remember how you were having problems with your brakes not biting as hard as they should because you changed pads?
Same deal here.

BTW, unless I am mistaken, this is a flywheel for an NA8, you will need a clutch from an NA8 to make it work.

fastfreddygassit · Postby **fastfreddygassit** » Fri Jul 11, 2008 1:58 pm

your flywheel needs to be machined. period.

1red5 wrote:BTW, unless I am mistaken, this is a flywheel for an NA8, you will need a clutch from an NA8 to make it work.

I concur. It definitely looks like a NA8 flywheel. Hope you have a 1.8 clutch...

Mr Starlet · Postby **Mr Starlet** » Fri Jul 11, 2008 2:05 pm

it's a Yes then, I was abit tentative when they said they'll have to take it apart, machine the disk then trim the pressure plate post to match etc etc... start to sound like too much stuffing about and let's not forget the balancing afterwards, apparently not as straight forward as a normal clutch.

Mr Morlock · Postby **Mr Morlock** » Fri Jul 11, 2008 2:09 pm

I would not do the installation job unless you know what you are doing. It is not a nice job and a cow to get good access. Clutch repairers are fast and in my experience reasonably priced. I had a standard Exedy clutch fitted and cured the shuddering. Maching- mandatory- many repairers do this in house

Mr Starlet · Postby **Mr Starlet** » Fri Jul 11, 2008 2:15 pm

Off I go to the machine shop :lol:

fastfreddygassit · Postby **fastfreddygassit** » Fri Jul 11, 2008 8:57 pm

Mr Morlock wrote:I would not do the installation job unless you know what you are doing.

well duh

Mr Morlock wrote: repairers are fast and in my experience reasonably priced. I had a standard Exedy clutch fitted and cured the shuddering. Maching- mandatory- many repairers do this in house

reasonably priced? Ya joking right?? If you don't have the time/skill/ability nor the initiative to develop these then maybe a clutch place is for you.
I am no mechanic but I am willing to give things a go. What I saved doing my clutch more
than paid for the new lightweight Toda flywheel and exedy clutch I installed.
And fatty got his installed for the price of flywheel machining and a couple of snags. :shock:

It is obvious the Minh is going to give it a go. Kudos to him.

Fatty · Postby **Fatty** » Fri Jul 11, 2008 9:07 pm

'tis true, my clutch install cost me a few bottle of softdrink, some beers and some snags. took a bloody long time but we all learnt a lot along the way

Mr Starlet · Postby **Mr Starlet** » Fri Jul 11, 2008 9:36 pm

Thanks guys, flywheel machined ready to go

I'm anticipating 3hrs all up on a hoist, with two other pairs of kind lended hands...I hope I'm not way off, we'll find out by end of tomorrow.
Thanks again everyone, if I didn't ask I would have slap it on the way it was and be miserable for a long time.

Cheers
Minh