I did a night at the drags a few weeks ago and on the last run (12.01sec) it came off sounding like a chaff cutter. I have disassembled and sealed the exhaust a couple of times and even took off the SC to check for any leaks. No joy. Well today I found the problem. Number 4 exhaust rocker broken. Anyway three hours later with a spare second hand rocker it is running well again. Anyone else experienced this?
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