SOHC.co.uk Forums > CB350/400
Just about done
billywingnut:
nice job mate, I once had smoke on a triumph cub after rebore and new piston, it turned out I had put the scraper ring in upside down.
Nurse Julie:
--- Quote from: UK Pete on June 13, 2018, 10:22:24 AM ---Looks great
Does the top end come of with engine in frame
Sent from my SM-G930F using Tapatalk
--- End quote ---
Yes they do Pete, plenty of clearance unlike the CB750's :'(
ogri211:
I didnt fit my rebored barrels and pistons as the ones on it looked in very good condition but had a few broken cooling fins, but I managed to successfully get them welded and then dress them up. the barrels looked as if they had been done recently as there was no wear and the hone marks were still there, I think it is more likely a valve guide that is worn I lapped the valves and fitted new seals but it has the symptoms, rev it at a standstill and it smokes but if im going along the road it doesnt.
ogri211:
Another thing I used a cheap gasket set from ebay I read somewhere that a faulty head gasket can cause it to burn a bit of oil.
Johnwebley:
it doesn't sound serious,give it at least 1,000 miles and see what happens,did you fit new rings ???
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