SOHC.co.uk Forums > CB350/400
CB400F2 - Petrol tap
Aye Gee 1977:
--- Quote from: taysidedragon on January 04, 2024, 05:36:54 PM ---I bought a tap repair kit from David Silver a few years ago and I'm sure that it included the nylon bush thingy.
I just had a look at DS and the repair kit doesn't include the nylon Bush. ☹
--- End quote ---
I kept an old note of some problems with the bike that included need for a new filter etc. And joy of joys, I recently found a brand new refurb kit that I must have bought 40 years ago and had quite forgotten. It all went downhill when I put the blowlamp on the tap.
For those that like details, the large nut on the kit is plated whereas the one on the bike is plain brass
McCabe-Thiele (Ted):
Have you sourced a suitable replacement tap?
I'm interested in the outcome/solution.
Aye Gee 1977:
My solution, and only time will prove its worth, has been to cast a new nylon taper cock.
I tried reusing the old nylon, but it resulted in bubbles and voids as it boiled soon above its melting point. I have had more success using a petrol resistant 3d printer filament. It was cast in the ally tap casing with bungs to prevent leaks to unwanted ports. Some work with a sharp knife and files required when cast.
It seems to work but it will be tried for real later today.
The best advice is not to melt the one you have!
Matt_Harrington:
I like the idea of using 3D printer filament. Keep us posted on the results...
Johnny4428:
Great solution if it works! Here’s hoping. I’ll put my order in now for one! 😜
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