M20B25 into a 318is...what does it take?

[matt40567]

what installs and parts are necessary to fit a m20 flywheel into a m42 tranny?

[s52e30m3]

should fit fine.

edit: make sure starter teeth match flywheel teeth

[matt40567]

is there any way to be really sure before i buy it though?

thanks btw

[s52e30m3]

are you still using the m42 motor?

[matt40567]

yea...mostly all is stock engine wise.

[s52e30m3]

not sure how it will clearance the motor. I have a couple stock m42 flywheels if you need one.

[Jimmy Lewis]

You need the m20 single mass flywheel, an m20 clutch, and a 323 throw out bearing. Also you can either swap your starter gear for one out of an m20 starter or just use an m20 starter to begin with, both are equally easy if you do it right. If you go through the trouble of doing the swap, you might as well lighten the m20 flywheel a bit. The m20 clutch and pressure plate weigh a bit more than the m42 clutch package, so without shaving some weight off the m20 flywheel you negate a lot of the weight dropped by swapping flywheels. Good luck, the part numbers and details about the procedure can be found on m42club.