I have a B18a that originally had an A1 tranny, and I ventilated it with the spider gears from the diff.

I now have a YS1 tranny that has a larger shaft than the A1 tranny, and I need to know what I have to do to get these two together.

I know I have to have a clutch disc that fits the YS1 splines, but do I need to change my flywheel and pressure plate also? I just bought a new pressure plate and had my flywheel surfaced, and this YS1 has about 22K miles on it, so I really want to use it.

Help out an old-school EF driver

 

I am pretty sure you just need the disc. The pressure plate and flywheel should be the same.

 

All you need is the disc.

 

thanks fellas, I wish I had found out before I tried to swap input shafts between an a1 and a ys1...