SOHC.co.uk Forums > CB500/550
550 F2 started!
Nurse Julie:
Looking great Roo.
Laverdaroo:
Still waiting for my brass right angle to repair the breather in carb 3 but no rush n all that….
Still pondering how to fix it in, would solder work or some silicon tape or hairy string? Not sure until it comes.
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Bryanj:
Solder wont workas carbs are monkey metal, very tight fit with locktite
Oddjob:
Still wondering why you didn’t just buy a plastic right angled pipe connector Roo, you could just sand the end until it fitted the body, no one will ever see it with the pipe on.
Always wondered why Honda failed to fit spring washers under the heads of the choke flap screws, if one of those come loose it’s going straight into the combustion chamber. Ok, so they peened the back of the screws a little when new but I’m willing to bet nobody does that when they get refitted, another thing, Mark Paris recommends cutting down any protruding part of the carb balancing adapter screws on the intake manifolds so that they don’t upset the airflow, so presumably the same thing could apply to the choke flaps screws, so I intend to replace the screws with stainless ones, fit a spring washer then file them flat on the reverse, whilst not mounted of course so that no chance of metal filings going into the carb bodies. Maybe I’m just going ott but then again maybe it will make a very small difference.
Oh and Roo, Mark also says approx 5 psi in the forks and I think it was approx 10mm of preload. I’ll check that when I can find his notes on the 500.
AshimotoK0:
--- Quote from: Oddjob on December 31, 2021, 01:38:26 AM ---Still wondering why you didn’t just buy a plastic right angled pipe connector Roo, you could just sand the end until it fitted the body, no one will ever see it with the pipe on.
Always wondered why Honda failed to fit spring washers under the heads of the choke flap screws, if one of those come loose it’s going straight into the combustion chamber. Ok, so they peened the back of the screws a little when new but I’m willing to bet nobody does that when they get refitted, another thing, Mark Paris recommends cutting down any protruding part of the carb balancing adapter screws on the intake manifolds so that they don’t upset the airflow, so presumably the same thing could apply to the choke flaps screws, so I intend to replace the screws with stainless ones, fit a spring washer then file them flat on the reverse, whilst not mounted of course so that no chance of metal filings going into the carb bodies. Maybe I’m just going ott but then again maybe it will make a very small difference.
Oh and Roo, Mark also says approx 5 psi in the forks and I think it was approx 10mm of preload. I’ll check that when I can find his notes on the 500.
--- End quote ---
I always wondered about this Service Bulletin attached, concerning an M6 nut finding itself inside the engine on the CB750/Sandcast air filter housing.
Then I got talking to a bloke who was the Service Manager at Freddie Friths's in Grimsby in 1970 and he told me that the very 1st CB750 he worked on for repair not servicing was that very fault. He also told me that the comedian Dick Emery came in and test drove one of the 1st CB750's, as he was in pantomime in Cleethorpes .. but as we all know Dick went on to buy one from Tippets of Surbiton
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