fz6bk
Member
I had posted back in April seeking help after losing power suddenly on the highway. That post was accidentally deleted. Observations among other things were badly burned spark plugs. The electrodes were just gone. It's amazing that it ran as long as it did. I suspected it was running lean/hot due to decat and slips ons with a sight unseen ECUnleashed flash. The flash was supposed to have made the mixture richer, so I was running my PC V with a zero map, as advised, until I could get it dyno tuned. Compression was low when I tested it, but my battery was dying at the time, and I'm not certain it cranked hard enough to trust the measurement. New spark plugs did not alleviate the problem.
I decided to just swap in a new engine I bought one for about $600 shipped on Ebay that had reportedly been compression tested. The project sat until this month. I finally swapped in the new engine, R6 forks and brakes (with Penske internals), and a S2 swingarm, among other planned mods. After about 30 (hard) miles, I had the spark plug in cylinder 4 lose the inner electrode. I'm not sure why. The others looked good. In any case, I installed a richer map (the one for my Scorpion exhaust) until I can get to the dyno. I think this is the most done I've ever been with the bike. It doesn't need anything.
I'll leak down and pop the head off the old engine eventually. I've had my eyes on a air cooled hypermotard as a replacement for a while, but I'm reminded why I love this bike now finally riding it. It's just the right amount of power in the right place. It's a shame they cut some corners as originally shipped. I'm hard pressed to find a better street bike now.
I decided to just swap in a new engine I bought one for about $600 shipped on Ebay that had reportedly been compression tested. The project sat until this month. I finally swapped in the new engine, R6 forks and brakes (with Penske internals), and a S2 swingarm, among other planned mods. After about 30 (hard) miles, I had the spark plug in cylinder 4 lose the inner electrode. I'm not sure why. The others looked good. In any case, I installed a richer map (the one for my Scorpion exhaust) until I can get to the dyno. I think this is the most done I've ever been with the bike. It doesn't need anything.
I'll leak down and pop the head off the old engine eventually. I've had my eyes on a air cooled hypermotard as a replacement for a while, but I'm reminded why I love this bike now finally riding it. It's just the right amount of power in the right place. It's a shame they cut some corners as originally shipped. I'm hard pressed to find a better street bike now.