are you using the 11/16 or 3/4 slave ?
If you have the 11/16 and swap to 3/4 it will make it slightly lighter but wont travel as far so check clearance.
If its already a 3/4 you could get it made larger and sleeved to say 13/16.

I'll get you all the info in the next day or so

I have a pic of the engine bay of the red ute with A series and 4AGE supercharger.
Looks great....I want one too.
But it will have to wait till other projects are out of the way

Maybe a call to Nissan in the morning is in order

I probably didn't explain it right.

I need the flywheel so Alloy Race Components can copy it and make me a lightweight one for my racecar.
The ring gear is the toothed bit on the flywheel that the starter motor runs on. This piece they cut off the old cast flywheel and shrink onto the new alloy one.

I am running a Toyota clutch as I am running a Toyota 5 speed so he needs a clutch plate so he can drill the bolt holes and put the dowel pins in. If he makes it to fit a Datsun clutch its no good to me. I can't remember what the clutch is out of so I have to check.

I'm in Perth so its alittle difficult for me to get to his workshop to give him the parts. I have spoken to him on the phone about it and he suggested I find someone local (Melbourne) who can get him a flywheel.

Would be great if you can help....no rush....just when its convenient...I have to get that Toyota clutch info first though.

Thanks mate

Neil

I need a favour of a datto fan in Melbourne.
Basically I need to send an A series flywheel and a Toyota clutch to Alloy Race Components near the Morabbin airport for him to make me a custom alloy flywheel for my racecar. I can't wait any longer for my local idiot who has been jerking me around for nearly 9 mths.
So I need someone to donate a flywheel and source a second hand clutch plate (so he can set the dowels and boltholes in the right spot) and get it to John on my behalf.
The flywheel won't be returned as he needs to cut the ring gear off it.
Anyone got a junk flywheel lying around with decnt ring gear? I'll let you know the Toyota model for the clutch plate if anyone can help.

Hope someone can help

Neil

I have a nifty little conversion program I can e-mail you if you like

Technically yes...but not by much.
You have a fixed combustion chamber volume and take the gasket volume as constant. If you increase the swept area of the cylinder then technically you increase the comp ratio. However piston manufacturers know this so they increase the dish size on most pistons to compensate for this on standard engines.
So if your going bigger just to increase comp it probably won't happen. Better to select a better piston for the job with a different crown setup to increase it.

I don't really see it being a viable option for this engine...........unless.........It is possible to buy a 3/4 size RX7 body shell- fibreglass-.....lots of drag racers use them in South American countries. Then it might be viable for a curcuit racing car or other small motorsport vehicle.