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<blockquote data-quote="Coda" data-source="post: 639658" data-attributes="member: 31747"><p>There's a mile-long thread on t'other forum.</p><p></p><p>TL;DR I overheated the engine during last August's heatwave and it starting make puff-puff sounds under load. I've pulled the engine out and pulled the heads off, to find one of the rocker shaft spring clips broken and floating around in the rocker area with the two thrust washers off that end of the shaft. The legs off the clip I don't know where they went, so I need to look in the sump for them. If I can't find them I think it might be necessary to split the cases... Otherwise, I need to clean up the heads and pistons and reassemble it with a few new bits and hope that's all it needed (that the rocker arm floating about was causing the noise and not a warped head. All head bolts seems snug when I undid them).</p></blockquote><p></p>
[QUOTE="Coda, post: 639658, member: 31747"] There's a mile-long thread on t'other forum. TL;DR I overheated the engine during last August's heatwave and it starting make puff-puff sounds under load. I've pulled the engine out and pulled the heads off, to find one of the rocker shaft spring clips broken and floating around in the rocker area with the two thrust washers off that end of the shaft. The legs off the clip I don't know where they went, so I need to look in the sump for them. If I can't find them I think it might be necessary to split the cases... Otherwise, I need to clean up the heads and pistons and reassemble it with a few new bits and hope that's all it needed (that the rocker arm floating about was causing the noise and not a warped head. All head bolts seems snug when I undid them). [/QUOTE]
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