Ribbed flywheel

[rkinsey]

G'day guys. The second hand motor that I have installed in the GQ has a new clutch kit installed as well as a new fly wheel. I thought to myself "Score!" however the flywheel is "ribbed" and not flat.

I can not find any information on this flywheel at all as I am trying to find out what clutch plate goes with it. The clutch plate that was with the kit does not fit the input shaft of my gearbox so I had to put in my original clutch plate.

However it is making a horrible grinding noise when I takeoff.

My next option is to replace the flywheel and clutch kit altogether.

Any ideas?

Cheers,

Rob

[Figjam]

Hi Rob

I have never seen or heard of a ribbed flywheel before. Are these circular ribs? If so it is a damaged face and needs machining. Straight ribs radiating out from the centre would strip the clutch material as you "slip it" for a controlled takeoff.

As you have not re-installed the clutch plate that came with it, there may be some interferance around the central damping spigot area of the clutch plate or possibly it is arse about and hitting flywheel bolt heads.

Either way it needs to be checked and remedied quickly as bad vibration back through your crank and gearbox can lead to major damage

[rkinsey]

Thanks Figjam,

I am dropping the gearbox this weekend. Im kikcking myself for not taking photos when it was out of the car, but the ribs are radiating out from the centre of the fly wheel on the clutch surface. It looked like a brand new fly wheel.

I dont think I have installed my clutch plate incorrectly. I did double check that it was facing the right way. However, I have been known to muck things up from time to time so I will double check.

I will come back with pics and my findings tomorrow night.

Cheers,

Rob

[Stropp]

bugger thats not good, will be interested to see the pics.

[Bloodyaussie]

Wish there were pics as I am having trouble understanding what's going on?

[Figjam]

Apolgies to those in the know but I thought I would add some very basic info and photo.

A clutch assembly has the flywheel bolted to the crank with a smooth outer face (usually)
The clutch plate itself has friction materials on both faces and mounts on a spline to the greabox input shaft. They usually have some sort of dampening unit in the centre such as the section with springs in the image. This helps to alleviate some of the shock loading as the clutch is engaged.
Often this dampening centre is sticks further out on one side than the other and it is possible to fit it in the wrong way around.

The pressure plate is spring loaded and compresses the friction plate between its smooth surface and the flywheel's.
A thrust bearing presses against the "fingers" of the pressure plate to apply and release clutch spring tension as the clutch pedal is operated.

N2673.jpg

[rkinsey]

Here you go Stropp and BA.

I found the problem......

[rkinsey]

Turns out I did install the clutch plate correctly but I didn't take any notice of the flywheel

I am in the middle of installing my original flywheel to resolve the problem.

Tomorrow is wrestle the gearbox back into place day.....

Cheers,

Rob

[Bloodyaussie]

Interesting machining marks.....

Have fun tomorrow... I have been there a few times and it is not up there with my favourite things to do.

[rkinsey]

Righto.

Remove "Ribbed flywheel" (to be machined and or sold) cleanup original flywheel with some wet n dry and WD40 as well as about an hour of elbow greese. I also cleaned the (flat faced) flywheel and new clutch and preasure plate. All up, took me about one hour.