So I just hit 20,000kms on my '02 Honda foreman, everything is original except the odd bearing and oil changes. I've o ly ever had it in for a tune up once like 7 years ago, and when I'm hauling ass down the road or something theire is sort of a sound sort of like a lose connecting rod, not sure if that's it exactly but it's enough to send shivers down your back, and it's been an awesome quad so far and I hate to sell it so what us the best route to go, rebuild or through a new one in? I'd hate to see the bill for a new engine