Yes, yes, yes, I am aware I will have to tare it down to the smallest item..
Someone mentioned in an erarlier input, that theese iron headed motors dont need to be specially treated or rebuilt to work with modern un-leaded fuel. Is this correct? Do they not even need lead substitute added? Or did I mis read that?
Beeing without a workshop manual for the moment, what are the different over sizes for pistons/ bore? Of course they are not in metric millimmeters to start with, but theese cylinders are 71,5 mm = 2,815 ". Is this on the high end or on the lower end of possible over dimensions? I have no idea what size they were 40 years ago, but I cant remember I had it rebored.., I think I had new pistons installed.., aah dont know.
When I restore one of all theese JAWA engines that float through my workshop, I do as a rule replace all bearings, just to know all are new and in the same condition. All clocks are on zero. I guess I ought to keep that habit allso here. It is impossible to determine wich bearings are OK and wich need replacement, apart for those obviously dammaged.
Are all bearings easily obtainable? I know theese imperial measure bearings can be tricky to find..
Is there any other easy improvement that can be done while the engine is anyway taken apart?
Reworked or completely new oil pump is still on the list.
I guess a normal service of the cylinder head will do. And continue with lead -substitute..
Clutch seems to work OK.
Yes, that sludge trap, where is it? Any picture?
Until later
Anders
Sweden