m20 single mass fly machining details

[scott320i]

Has anyone got a diagram on where and how much material to remove from a m20 fly so it fits a m50
Or do ppl just put the fly up mark what needs to come off and have it done

[DanThe]

You only need to remove about 4mm, but taking it right back to the ring gear gets rid of a lot of weight

[scott320i]

I see , so min 4mm but up to ring gear better, and im guessing thats across the rear face which is only about 20mm anyway

[l17kke]

I got mine reduced to around 5.9kg