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CB400F Engine rebuild
taysidedragon:
Some good news, some bad.
The cam, followers and bearing faces are good. Plenty of oil in evidence. The valves look like new.
The engine hasn't run since being assembled. Combustion chambers and pistons are as clean as a whistle.
However, original Honda pistons look like they've been scraped with a knife, badly scratched crowns.
The bores are smooth and clean but no sign of any honing. The rings look new and the camchain tensioner horseshoe is free.
I'll get measuring in my next visit.
Bryanj:
Could have new rings but not been glaze busted, you can do that with an appropriately sized flap wheel
taysidedragon:
Didn't do much today, I had an essential trip to Durham! 🤣
I did find this though. I guess they didn't have a clutch nut tool. 🤨 [ Guests cannot view attachments ]
motty:
Some people should not be allowed to even touch a motorcycle, let alone work on one
Sent from my Moto E (4) Plus using Tapatalk
Bryanj:
I must admit to having had to do similar, but not that bad, back in early 70's when special tools just were not available to buy unless you were a franchised Honda dealer and they would not order the "special" tools for you even if you were prepared to pay the high price
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