Last fall I had the top end of my stock CB77 worked on as the engine was seized when I bought the bike. I provided the engine builder art oem 4th over pistons and rings. He bored the head and also completed a valve job.
I’ve started the bike but have not taken it out for an initial ride.
Can anyone recommend how to break the engine in. How many heat/cool down cycles would be recommended? How long should the first couple rides be and should I hold the revs at low, medium and high?
Thanks for the advice
CB77 engine break in advice
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- honda305.com Member
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CB77 engine break in advice
67' CB77
66’ CB77
65’ bomber
68’ hellcat
66’ CB77
65’ bomber
68’ hellcat
Re: CB77 engine break in advice
Opinions vary, but this is what Honda recommended.
G

G

Merz64cb77 wrote:Last fall I had the top end of my stock CB77 worked on as the engine was seized when I bought the bike. I provided the engine builder art oem 4th over pistons and rings. He bored the head and also completed a valve job.
I’ve started the bike but have not taken it out for an initial ride.
Can anyone recommend how to break the engine in. How many heat/cool down cycles would be recommended? How long should the first couple rides be and should I hold the revs at low, medium and high?
Thanks for the advice
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F
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- honda305.com Member
- Posts: 154
- Joined: Mon May 08, 2017 7:42 pm
- Location: Mississauga, ON CAN