| Welcome Linkavitch,
Your bike should come with a 428 chain as standard.
If you replace the Chinese chain with a good quality DID or RK chain - it should be plenty strong enough for your current engine set-up.
There are however companies like "Saturday Night Cycles", who supply hot engines for these bikes - and I believe they also provide 520 gauge sprocket upgrades to accommodate the extra power. If you really want to increase your chain gauge, I suggest you start with these guys.
You're the first guy I've heard from to get water in the oil on these bikes. It sounds like you may have drowned the bike at one point or another. It certainly does play hell with an engine - and I suspect the average China bike wouldn't have too many sophisticated design features to keep the water out.
Making sure the air box properly sealed is a must - but once the water goes above the air intake snorkel or the exhaust pipe - you've had it!
Well done on fixing things up however! |