My son has been running around on 'MY' Vstrom 650, (I'm running a 1200 Multistrada with an S1000xr coming next week) and the Vstrom's engine has started knocking.
now I'm only an aircraft technician by trade, he is a mechanical engineer, but I think a big end has gone.
Looking for a replacement engine, but getting a bit confused with the AL numbers.
Can anyone give me a run down about what they mean?