Registered Forum User
500SD
Bikes: Class A 620ssie #71 - 853 R/RS Dry - 748sp Wet
Posts: 725
Join Date: Nov 2009
Location: Chester
Mood: Green with envy
I ran two motors last year mark, each with a massive 44bhp. A good rebuild with attention to balanced weight, meticulous assembly, fueling, airbox mods etc would seem to be the way to go.
Have you had a compression blowby test? Leakage from rings