It finally happened, I knew the engine was on borrowed time, but it's been happily running me around for the past couple of years, relatively drama free. Now, still running reasonably well considering, it's misfiring on one cylinder and after a quick compression test, no.4 was found to be sadly lacking. You could also hear the familiar chuff-chuff out of the righthand pipe from a burnt exhaust valve.
The reason, you may well ask, why this engine was on borrowed time was because there is wear in the camshaft journals, so not ideal to do a top-end rebuild with the original head. And finding another head for one of these seems to be impossible in Australia. Plenty in the UK and America, but postage wouldn't be worthwhile.
