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Popping in exhaust

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SMBH
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Joined: Thu Oct 24, 2013 1:16 pm
Location: Redditch, England

Popping in exhaust

Post by SMBH » Wed Jan 18, 2017 7:14 pm

Looks like the popping the exhaust on over run is ok, to be fair to Honda this one has no silencer baffles (muffler and diffuser for you US customers) fitted or did they not fit then on the 1962 CB72.

https://www.youtube.com/watch?v=Mj2FNRfm0M0

Still my Favorite Honda well the CB77.

One for Graham this I think.

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G-Man
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Location: Derby, UK
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Post by G-Man » Thu Jan 19, 2017 3:27 am

Really nice video. Thanks SMBH

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

LOUD MOUSE
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Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Re: Popping in exhaust

Post by LOUD MOUSE » Thu Jan 19, 2017 6:02 am

All came with baffles. ................lm
SMBH wrote:Looks like the popping the exhaust on over run is ok, to be fair to Honda this one has no silencer baffles (muffler and diffuser for you US customers) fitted or did they not fit then on the 1962 CB72.

https://www.youtube.com/watch?v=Mj2FNRfm0M0

Still my Favorite Honda well the CB77.

One for Graham this I think.

catterar
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Joined: Thu Aug 30, 2012 3:21 pm
Location: Angier, NC

Baffled

Post by catterar » Thu Jan 19, 2017 9:04 am

On a side note what are the consequences of running a CA77 without baffles?

SMBH
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Posts: 294
Joined: Thu Oct 24, 2013 1:16 pm
Location: Redditch, England

Re: Baffled

Post by SMBH » Thu Jan 19, 2017 3:37 pm

catterar wrote:On a side note what are the consequences of running a CA77 without baffles?[/quote

Weak mixture and poss a holed piston if used at high speed for a long time time you need to rejet your carb or carbs, and popping on over run see video and that was Honda they should know better at the end of the day future generations could see this bike and think this is how they were made museums have to get it right also any one writing a book will also use the bike as beaing correct and so it go's on.
On the subject of CB72/77 I purchased a new CB72 and CB77 back in early 60's and Honda never painted under the tank and the oil in the forks was so bad (fish oil I think) rev the bike hard and rear light bulbs went at alarming rate, std tyre were lethal in the wet. yes and many more problems but boy they were light years ahead of the competition one day I will put down my views on these amazing bikes before I leave this mortal soil.

One last thing ALL the road test one see in the classic magazines today of classic bikes are of machines that have been restored and not the real thing, the old mags do have the real bikes in them now that's another story old road test I knew Bob Curry well and he told many a story of them road test and he rode them all back here in England.

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