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Vintage Honda Owners,
Restorers, Riders and
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My Stuck Pistons SOLVED
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Post new topic   Reply to topic    Honda305.com Forum -> Honda Dream - CA72 | CA77 | CA78
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G-Man
honda305.com Member


Joined: 25 Mar 2009
Posts: 5399
Location: Derby, UK

PostPosted: Thu Dec 06, 2018 10:09 am    Post subject: Reply with quote

Unfortunately the pistons I thought were CA77 are CB77.

All is not lost, though - I have found one CA77 STD piston.

Will keep looking.

G

Dr. Frankenstein wrote:
Yup - my cylinders measure 59.85 all the way down, give or take one or two hundredths.

_________________
'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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Dr. Frankenstein
honda305.com Member


Joined: 02 Feb 2010
Posts: 327
Location: Charlottesville, VA

PostPosted: Thu Dec 06, 2018 10:52 am    Post subject: Reply with quote

I Think Standard-size CB77 pistons ARE 60mm...aren't they ?
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G-Man
honda305.com Member


Joined: 25 Mar 2009
Posts: 5399
Location: Derby, UK

PostPosted: Thu Dec 06, 2018 10:58 am    Post subject: Reply with quote

They are indeed but the crown design is different from CA77 and might lead to a lower compression ratio.

That said, I do have some high compression ones.....

Let me rummage a bit more.

G

Dr. Frankenstein wrote:
I Think Standard-size CB77 pistons ARE 60mm...aren't they ?

_________________
'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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