gearbox/flywheel

[ed325i]

When using the m20 325 gearbox on the m50 engine what flywheel do you use ?

Ed

[Ant]

M20 fly, spigot and cutch assy Ed

Usefully lighter than the OE M50 unit too

All bolts up, no issues, you'll have 4 bolts in the lower bellhousing to redrill if you want but TBH, its the big-uns that do the job and they are spot on.

use M20 selsctor assy too, you'll need to mod the floor slightly where the top of the g/box is close to it, ther's a rebate for it if you look, replicate that in its new location, and alls well.

for the g/box mounts, use twio cradles, cut one up and use the parts to bridge the second to correct for the clocking.

[ed325i]

Thanks Ant

[ed325i]

use M20 selsctor assy too

What is the best way to mod it so it fits ?

[ed325i]

I have just fitted my m20 flywheel to the m50 engine and the flywheel rubs on the back of the sump

[march109]

I read somewhere on the M50 conversion using the M20 flywheel it needs to be machined down by about 3-4mm, ask Ant though he will be the man in the know on how and where to machine it down if at all.

[ed325i]

I have modded the sump.
There are to long sump bolts right at the back which the flywheel hits, so I took the bolts out and ground off the part on the sump where the long bolt go through and fitted shorter bolts and now it all fitted ok.

[DanThe]

Ed, are you using an early or late M20 flywheel? The late fly I first bolted up clamped down onto the bolts that hold the rear crank seal ally piece

[ed325i]

I am using an early one