M40 gearbox to M42 gearbox upgrade prop compatibility?

[TDSCHRIS]

I've purchased an m42 gearbox for my m40 318i
Just wondered if I can adjust the prop length enough on the splines
Or do I need an m42 gearboxs prop
As I know the m42 gearbox is slightly longer?

[redcar]

You need the m42 prop

[TDSCHRIS]

Okey doke I'll get one sorted cheers for that

[redcar]

No problem mate

[johnl320]

Can you not just swap the output flange to use the shorter m40 one and retain your old prop?

[TDSCHRIS]

I'm not sure, my box hasn't arrived yet but when it does I'll measure it up because I'd be up for that if it saves me buying a prop! Cheers