SOHC.co.uk Forums > Anorak's Corner
CB400F airbox rubber sealant
Matt_Harrington:
--- Quote from: Athame57 on February 09, 2024, 10:55:58 PM ---I'm not sure I know what is going on here, I've never used a sealant before. Are they not airtight enough on their own or something?
--- End quote ---
I'm with you on that one!
AshimotoK0:
Yes the original arrangement definitely had so kind of sealant on the rubbers and I don't think they would seal perfectly without it. The carb inlet ones also need to align with the raised dot on the airbox.
AshimotoK0:
Here it is after bonding with the 2-part Polyurethane
Had difficulty fitting the two centre rubbers to the carb intakes, despite warming up the still fairly pliable rubbers. This is because the plastic collector box housing flexes ...... so came up with this 'tool' to push from the inside of the air filter frame. Will see how it goes :)
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AshimotoK0:
--- Quote from: Matt_Harrington on February 10, 2024, 08:28:49 AM ---
--- Quote from: Athame57 on February 09, 2024, 10:55:58 PM ---I'm not sure I know what is going on here, I've never used a sealant before. Are they not airtight enough on their own or something?
--- End quote ---
I'm with you on that one!
--- End quote ---
You can see sealant used on this picture of a NOS air-box assembly.
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Athame57:
--- Quote from: AshimotoK0 on February 10, 2024, 01:49:33 PM ---Here it is after bonding with the 2-part Polyurethane
Had difficulty fitting the two centre rubbers to the carb intakes, despite warming up the still fairly pliable rubbers. This is because the plastic collector box housing flexes ...... so came up with this 'tool' to push from the inside of the air filter frame. Will see how it goes :)
--- End quote ---
How did you get on with the tool you made? Would it make much difference if I invested in a new airbox manifold to replace my 46 year old one? I truly dread doing this job. ::)
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