New found .cb77 type 1.
Is that advisable to do after sitting for 44yrs. and where it sat ?? ...unless it was started and ran occasionally, I would be hesitant to just try to fire it up. Motor can have rust inside from condensation, valves could be stuck, cylinder walls can have surface rust, etc... JMOA. Dee. If any of those things has happened - it won't start or even turn over. If it turns over you won't do much harm by having a little fun with it and repairing it later. Change the oil, clean the filter and keep it in one piece as long as you can.
Most of my projects have arrived in a state where they are unable to run and require a total restoration. (I like it like that).  Most engines will run after a fashion but, as soon as you pull them apart, the money pit opens up. I rebuild all of my engines from the crank up and by doing it myself I can save cost. There are countless 'projects' that have been stripped for inspection and never make it back together. I used to worry about starting engines that had stood for years but if they can be made to run & don't rattle they're probably fine...... :-) Of course - if it looks like this inside - better to fix it first.....  If you are going to take it apart - take it apart properly, repair/replace the worn out bits, clean out all the hidden sludge traps inside the crankshaft and make sure it's good for another 50 years....  And remember to put it back together....  Hopefully you'll get it finished without running out of cash..  Just my humble two cents....... G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F
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WOW, you do very nice work indeed G. ! My only worry is that, yes, it starts and may run (...for a period of time) and then "KABANG". This happened to a friend's bike he found (he did not look inside), it did run ok for a good while but eventually, yes, "KABANG" . After sitting, you get spots, etching on cam lobes, etc.. and other moving parts...after running for engine awhile those spots will flake and make for a dirty bottom end and bearings, etc...don't like debris. Maybe if he flushed it a few times after running it he could have gotten more time out of the engine but, your gambling IMO. Dee He was unlucky - but at least he got to play a little and those parts needed fixing anyway.
"What man has made, man can make again"........ Oil filters are designed to remove debris...... :-) I'll have to look in my Mechanical Engineers dictionary for a full technical description of Kabang..... I've also known fully rebuilt engines destroy themselves when they weren't put back together properly. Double-unlucky. G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F
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