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+--- Thread: Fuel pipe diameter (/showthread.php?tid=7009)
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Fuel pipe diameter - Steve Bryant - 26-12-2021
I'm currently sorting out the items required to make up the fuel line from the shut off tap to the Bronze Zenith Carb on my AD type seven. I need to order the copper fuel tubing for this.
So... is the tubing 5/16" or 1/4" diameter? I'm thinking 5/16 but would like to get confirmation on this. Would three feet be sufficient to include the vibration loop or should I get four feet?
Thanks for indulging all these basic questions.
Cheers,
Stephen
RE: Fuel pipe diameter - AustinWood - 26-12-2021
Available from A7 stockists
RE: Fuel pipe diameter - Howard Wright - 27-12-2021
Hi Steve
It’s 1/4” and as Jim says the Cherished suppliers stock it along with the 1/4” nipples and BSP thread nuts that fit the tap and float entry.
I seem to remember that 3’ was about enough for my RK but only just enough. Probably safer to get 4’.
Cheers
Howard
RE: Fuel pipe diameter - Steve Bryant - 27-12-2021
Thank you Howard.
RE: Fuel pipe diameter - Dennis Nicholas - 27-12-2021
You probably know that the vibration loop should be horizontal and not vertical like some you see.
Dennis
RE: Fuel pipe diameter - Steve Bryant - 27-12-2021
Yes I do, but I don't know the diameter of the pipe as it was originally.
Stephen
RE: Fuel pipe diameter - Steve Bryant - 29-12-2021
Can anyone confirm if the pipe is 1/4 inch diameter ?
Thanks,
Stephen
RE: Fuel pipe diameter - Colin Cooke - 29-12-2021
Hi Steve,
I'm very close to getting my car running, and I've been a bit naughty, fitting dash 4 aeroquip hose for the fuel hose from rear tank to mechanical pump. I measured the old copper pipe, which was around 3/16" internal diameter. Dash 4 hose is close to this (5.4mm ID).
Hopefully someone will confirm that this is the correct bore size.
All the best,
Colin
RE: Fuel pipe diameter - Colin Morgan - 29-12-2021
The outside diameter of the ancient copper pipe on my car is 1/4".
RE: Fuel pipe diameter - AustinWood - 29-12-2021
BSP, British Standard Pipe, threads are specified by the bore of the pipe. This can be a bit confusing.
I don't know if the Outside Diameter of the pipe is specified.
My guess is the bore is specified as that is the parameter that determines fluid flow through the pipe.