So my block of nylon arrived from the ebay vendor and I made up an oldham coupling (which I now know the name of thanks to this ng). I pondered which way to time the magneto, but it runs at crank speed so fires every rotation (is that common ?).
Checking the valve clearances I found .25mm inlet, .30exhaust which seemed reasonable, it had oil and compression, so we were running out of excuses. I put some petrol in it, my dad ticked the amal (he's old enough to know about such things :-) ) and after winding it over a couple of times it fired, then proceded to rev it's nuts off and vibrate itself across the drive with two of us hanging onto the beast !.
Turned out the float needle valve wasn't seating and the governer seems to be U/S. So after sorting the carb out (it looked clean after a cursory inspection, but not clean enough) we went to manual throttle and tried again. After twiddling the mixture it's got a happy idle and accelerates if prompted, it was dark by this stage and the silencer doesn't, so we called it a result and tidied up at that stage. I'll get some photos next time I have day-light and help to get it out of the landie.
A couple of questions, I presume valve seat recession is an issue of something of this age and car additives work ? Castrol for instance ?
Do the valve clearances sound good ?. Anyone know what they should actually be ?
Tia, Scruttocks