Confused myself with clutches today.
First, non-confusing part is that I confirmed that a second generation RX7 (FC, aka Series4 & 5) turbo clutch plate fits a Magna box/clutch.
So the gamble of buying a nearly new RX7 button plate paid off - it was less than 2/3rds of the cost of a new plate for a Magna.
Then… despite the 3.0 Magnas having 225mm clutches, the 3.0 pressure plate is actually designed for a 240mm driven plate.
And despite the 3.5 clutch being described as 240mm, the spare 3.5 plate I had is 230mm?!
Then onto my pile of old clutches…
Long story short, is that if I can find a source of the pucks and rivets, I’m feeling confident that I can make my own button plates.
The star bit in the lower middle is the splined section from the worn out 230mm plate in the earlier photo. This can be riveted/bolted to a disc like the plate in the bottom left.
I’ve found a Chinese seller of the parts, but I assume they will want to sell me 10,000 at a time.
And after all that, Google spat up a good spec Lancer Evolution button clutch for about the same I paid for the standard clutch that went into the red wagon…
All of the brain melting wasn’t worthless, because I can still use the knowledge to make something for the blue 2.4 Mirage.