43/38mm valves on 750SS-1993

[Phil998S]

Hi guys,

I've got some spare 43mm/38mm valves from a 900SS-FI.
I'm wondering if I could put these on my 750SS-1993 which carries already the 900SS-FI cams ?
That would be a cheap oversizing valve mod for me.

From what I read here and there, people are telling 42.5mm/38mm max - which could be confirmed as Ferracci is selling 42mm/38mm for 750cc.

Anybody experienced this cheap 43/38 mod ?
What are the risks ? Valve-to-valve clearance ? Valve seats interference ?

Cheers,

Phil