Blown timing chain? - 600RR.net
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post #1 of 3 (permalink) Old 08-28-2010, 09:24 PM Thread Starter
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Blown timing chain?

OK so the background. It's an '03 CBR600RR with 27,000km on the clock and in damn good condition, no previous rattles or noises. Had some work done on the bike prior to a trackday, and it was noticed that the bike was running a little hot (but nothing crazy) and also that there was a little too much engine oil.

So I thought nothing about it and did a track day (bad idea). After a few sessions screaming down the back straight at ~13,500rpm there was a bang and the engine cut. So I grabbed the clutch and free-wheeled back down to the pitlane.

Upon inspection it appears the seal on the oil filter has blown, and the engine temp was 113 degrees (on a 24 degree day). Let the bike cool down and tried a restart, the bike did start, however with a horrible mechanical crunching sound and then stalls.

Just wondering if anyone has any idea's what might be the problem? I'm thinking timing chain/valves at the moment, but haven;t had chance to take it apart.
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post #2 of 3 (permalink) Old 08-28-2010, 09:30 PM
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There's no real way to tell without opening up the engine. Maybe you dropped a valve.
post #3 of 3 (permalink) Old 08-31-2010, 11:16 PM
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awww man crunching sound does not sound good at all....

2006 CBR 600rr All BLACK- SOLD 41,000 miles...
2011 Bmw S1000rr YELLOW
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