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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Curious how many people have had a bad cranks on TCs? My 2007 has bad crank bearings and they took out the pin. Noticed it because the rods were sticky and not falling away smoothly. Someone I know privately talked to a dealer, and they said they have seen alot of that in 2007s.
Only had 70k miles. My 01 90k I pressed that apart and it looks great.
If a built motor, mention that. This was just stage I. For the first year or two, I did a bit of engine braking.
Maybe it would have gone for long time like that, but also might have grenaded worse
I skewed the flywheels on mine. Not long after putting 107 stage 3 big bore kit on it. It had stock heads and a cam. I really wasn't that hard on it, but that pressed together crank couldn't handle it.
I skewed the flywheels on mine. Not long after putting 107 stage 3 big bore kit on it. It had stock heads and a cam. I really wasn't that hard on it, but that pressed together crank couldn't handle it.
So what did you do to fix it? I am replacing rods, bearings, pin, balance and welding. recentering sprocket side.
So what did you do to fix it? I am replacing rods, bearings, pin, balance and welding. recentering sprocket side.
I sent the whole crankcase off to Darkhorse Crankworks. They balanced, welded, h-beam rods, and timken bearing. The works. It cost a pretty penny. The top end was fine but I had the heads ported over at Fuel Moto. It's holding up good now I have 7,000 miles on the new crank. It stays wound up in the higher rpms most of the day. It sounds like you're on the right track. It sucks having the bike down but in the end it's worth it to have peace of mind.