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Thanks so much for your time. Question 1: yes, both headers get hot and with it being cold outside you can see both cylinders are combusting (not sure if thats a word) as there are exhaust gases. Question 2: diaphragms installed correctly and i have checked all passages. I blasted carb cleaner throu...

Thanks, I've tried it and the problem remains with the left hand cylinder. It's really confusing, might have to swallow my pride and take it to someone professional to have a look

Thanks, it’s a really simple build. Just a new rear subframe, seat and a load of motogadget stuff.

Hi Rob, Thanks for this. Yeah, valves set correctly. I replaced the rings as a wishful thinking exercise. Piston looks fine, valves looks fine although I've not actually removed them from the head yet as I don't have a spring compressor. Looking through the exhaust/inlet ports and turning the rear w...

Hi, Has anybody got any idea why my left cylinder on my R80 won't run properly. I have very little experience of these bikes but do have reasonable mechanical knowledge.The left hand cylinder is running but won't rev properly. I've connected a vacuum gauge and the right cylinder at tick over is pull...