I am doing a little bit of researching and I need you help.
There are 2 versions of the CA18DET flywheel.
One from '88, September — '89, April with P/N 12310-36F00 (should be thinner).
One from '89, April — with P/N 12310-35F00 (should be thicker).
The difference is the thickness of the mounting flange.
It would be very helpful, if some people, who have a flywheel in there garage, would measure that thickness with calipers and post the dimensions here. If you have a precise scale, you could measure the weight as well. There should be a weight difference as well.
That would be truly awesome !
Depending on the thickness of the flywheel, it is necessary to choose the correct bolts.
The thread is both the same, M10x1.0mm.
Estimated bolt length:
'88, September — '89, April manual gearbox P/N 12315-55M00 should be around 25mm (under head length).
'89, April — manual gearbox P/N 12315-D4000 should be around 30mm (under head length).
p.s. please do not link onto another thread, there is to much wrong information out there.