Bastard, she started to warm it up, sounded ok at the time, little death rattley on shut down, but same as yesterday. Started again and died waiting to go on the track. Then wouldn't start and stay running for more than a few seconds, even on the roller, clunking and backfiring just got progressively worse.
Pulled it out this evening, haven't split the case yet, but can feel about 1 - 2 mm of lateral play in the crank. I'm assuming that this means the main bearings and hence crank seals have gone.
Small end and big end feel fine and were covered in 2T mix so pretty sure they were being well lubed. No play in either bearing. No signs of seizure on the piston. Nothing in the barrel either. Will post photos of everything tomorrow to give you all a good look at the whole package. Your advice will be appreciated from that point onwards.
Real bitch was I was lending it to a mate so he could experience and potentially get into bucket racing, needless to say he's been put off two strokes by the experience, but hopefully not buckets all together. And I myself have come to the conclusion that you need to pack an engine for each race, just to be safe.
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