Thanks Wim, good to know that I can still run an original cylinder after modifying the mix case to optimize for a DR 43mm.

I intend to run Sito+ pipe on the Si MIx w/ DR for less noise.

Does this lessen the benefit of modifying the case?

Ben

Should I also match the cases, drill the intake to 13mm and open in the inlet even though it’s a Mix case?

I suppose I wouldn’t be able to run stock cylinder in the future if I did that.

Thank you Wim.  Some advise against stating that the Mikuni was designed for Stock 38.4mm cylinder only.

I have: Sito+, 13.13, Pinasco 50th Anniversory, Mazzi Standard Crank (modified for Mix – I couldn’t find a Mix Crank) and Malossi Red Airbox.

I think I will use 67, 68 or 69 Jet.

I will first break in the engine using pre-mix, then setup…[Lees meer]

Hello!

Has anyone tried running a DR43mm on a Si Mix?

I would like to run this if it won’t ruin my engine due to lack of oil.

Thanks!