Heya folks! Due to engine meltdown I've finally got the opportunity to fix a problem i've had for over 3 years which is worn flywheel teeth causing mucho grinding and embarresment on startup. I have a ORC (Ogura) Damperless twin plate so it's got it's own matching flywheel. The problem is that all the Z32 ORC twin plates I can find pictures for look different to the one I have so I don't know if mines just old and discontinued or was adapted from another car or what's going on. Regardless, if I could find the right model a replacment flywheel seems to be around $1000. I've enquired about having the teeth machined off my ORC flywheel and then pressing a stock ring gear on, but this depends on the shape of the flywheel if it's feasable. Another thought was to try to have the teeth repaired, but i've got to do some more ringing around to see if this is possible. So long story short, I want to see if it's worth stuffing around fixing what i've got or just buy a newie. I can't find any specs for the new and minimum thinknesses for my clutch plates so does anyone know this info by any chance or has a general idea going off OS or Exedy etc etc clutches? Mine looks to have a fair amount of meat left, but i'm just not sure. TIA Regards Ben
Could be off a different car if you have starter issues. Got a piccy of the worn teeth? Ring around a few specialist clutch places, they should be able to point you in the right direction.
I have the same problem, my twin plate OS giken has a section of teeth that have half thier width sheared. Let me know how you go finding a place to machine it down and slip a stock ring gear on, or if you find a place that can repair teeth
Pics Here are some pics of the beasty. I've measured the friction plate thickness (only using a ruler unfortunatly) and it seems to be around 3.7 - 4.0 mm. Can anyone tell me what new thickness might be? Even if it's for a different brand clutch, just to give me some idea. Cheers Ben
Just eyeballing it, it looks like you have heaps of meat left on those plates. The wear on the ring gear is a bit strange though. I don't see why you couldn't get it machined down and a standard ring gear shrunk and welded on.
Have it checked Take the entire kit (including the flywheel) to Western Clutch Services in St Marys NSW. John will check it out for you. If the clutch plates are worn, he will be able to re face them for you, as long as the spline centres aren't loose. The facings on these clutch plates can occasionally wear into the flywheel, pressure and intermediate plate, giving less "crush" to the assembly as a whole. This will cause it to slip. He will be able to machine these surfaces and shim the diaphragm in the pressure plate to suit. He may also have a solution to your flywheel problem
That's what I was thinking, but apon closer inspection of the underside the the flywheel it might not be possible. The back side dishes in just after the teeth, so there might not be a wide enough rim for the new ring gear to seat on. I'm not sure though as I don't have a stock ring gear or flywheel here to measure and i'd rather not fork out $100 odd on a new ring then have it not work. I'd rather have the teeth fixed if possible and i've heard plenty of good things about Western Clutch Services so i'll give them a ring and see where I stand. Thanks fellas Ben
I've done some ringing around and got onto a chap by the name of Gordon Pendlebury in the Blue Mountains. I showed him the pics and he reckons he can fix it do dramas at all :thumbup: A rough estimate was $250 - 300. Not too bad considering the time and effort required in welding/machining each individual tooth. Very nice guy to talk to, and he said that in the 20 odd years he's been repairing flywheel teeth he's never had one come back so that's encouraging. I'll let you all know how it turns out. Ben
