Clutch Plate diameter
Posted: Sat Nov 19, 2022 2:43 pm
G'day all. Looking for some advice. Planning to put a new clutch in a 1990 project Brumby and want to know if it matters whether the new clutch plate is 200mm or 225mm? FYI the input spline has 21 teeth. There is a bit of a twist. When I bought the car (a barn find) it came with an extra engine block (both are EA81's). My guess is the previous owner was looking to swap out the original engine (probably owing to a blown head casket) with this new block as he'd removed the carburetor, unbolted the engine mounts and there were chains on the lifting hooks. I've got the old engine out and removed the clutch - it has a 225mm diameter sitting in flywheel inner that measures 230mm across. Looking online for a replacement part the ads are generally a bit vague. Most say 'Clutch For Subaru Brumby 1979-84' with the majority specs. *CLUTCH MEASUREMENTS: 200 X 21T X 22.0* and go for around $170. Some other advertisements will say they're suitable for later models like mine but are twice the price $350 i.e. HEAVY DUTY Clutch kit for Subaru LEONE BRUMBY 1982-1994 1.6L 1.8L EA81 AF5E 1600. A) So, my first question is; will those 1979-84 era clutches work in my 1990? Or do I have to opt for the more expensive ones that specifically go up to 1994. B) second question is; can I put that 200mm diameter clutch in there or does it have to be 225mm?
The other wrinkle is the replacement engine block (don't know what year vehicle it's from) has a flywheel that only measures 205mm diameter (looks like an older version). So there's no guess work there - only a 200mm clutch plate can be accommodated. But because it's been sitting a long while waiting to be put into the 1990 Bumby it's really rusty. So I'm guessing my best bet is to use the original and bigger flywheel rather than spending money getting the replacement one tooled. So, my third question without notice is, will it matter if I transfer the original flywheel over into the replacement engine block?
A lot to take in I know. All suggestions greatly appreciated. Cheers!
The other wrinkle is the replacement engine block (don't know what year vehicle it's from) has a flywheel that only measures 205mm diameter (looks like an older version). So there's no guess work there - only a 200mm clutch plate can be accommodated. But because it's been sitting a long while waiting to be put into the 1990 Bumby it's really rusty. So I'm guessing my best bet is to use the original and bigger flywheel rather than spending money getting the replacement one tooled. So, my third question without notice is, will it matter if I transfer the original flywheel over into the replacement engine block?
A lot to take in I know. All suggestions greatly appreciated. Cheers!