Author Topic: Fuel tap problem  (Read 434 times)

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TIGERJ

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Fuel tap problem
« on: 05 August, 2017, 06:22:04 »
As some of you will remember I am in the process of finishing my SS80.
Fuel has been in the tank some time now and petrol leaking from the tap only at the moment when
Tap is off.
I am guessing that the unused brass tap which came with the parts is not ethanol resistant ?
Can anyone confirm the thread sizes.
Thanks
          Tim

DEAN SOUTHALL

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Re: Fuel tap problem
« Reply #1 on: 05 August, 2017, 08:09:19 »
You could replace the tap with a Bap tap. They are leak free and easy to use and don't look too out of place
eg
https://www.draganfly.co.uk/index.php/a65anda50/category/776-petrol-taps-pipes

scroll down fpr description

JulianS

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Re: Fuel tap problem
« Reply #2 on: 05 August, 2017, 09:33:19 »
If your tap is plunger type with cork seal you can replace the plunger and cork for a new one though from my experience they will start to seep after a while, I dont think cork and ethanol are entirely compatible. Some will suggest you can boil or soak the cork to restore its seal but I am not convinced that either is a long term cure.

I changed to lever types on my A10, an English made one on one side which still seeps a bit and a cheap Wassell one on the other side, made in the far east, which has proved leak free over the past 12 months.

TIGERJ

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Re: Fuel tap problem
« Reply #3 on: 05 August, 2017, 19:54:30 »
I guess tank thread is BSP ANY IDEA WHAT SIZE.

JulianS

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Re: Fuel tap problem
« Reply #4 on: 05 August, 2017, 20:13:10 »
Usually 3/8 x 19 tpi BSP.

Some replacement taps are 1/4 x 19 tpi BSP but there are adaptors available for tank to tap in that case. Had to use such on my A10 when I abandoned the original taps.
« Last Edit: 05 August, 2017, 20:43:34 by JulianS »

TIGERJ

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Re: Fuel tap problem
« Reply #5 on: 08 August, 2017, 18:21:14 »
3/8 BSP is correct for my tank.
Got an adapter as you said.
Also purchased BAP type tap (no idea what BAP means)
Hopefully soon road ready
Thanks
           Tim

TIGERJ

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Re: Fuel tap problem
« Reply #6 on: 10 August, 2017, 20:20:47 »
Just about to fit the replacement fuel tap and feed.
Is PTFE TAPE ok for use on the threads ??
Tim

Bess

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Re: Fuel tap problem
« Reply #7 on: 10 August, 2017, 20:27:20 »
Hi TIGERJ,
                  PTFE and petrol is okay:

https://www.calpaclab.com/teflon-ptfe-compatibility/

Chart says A2-Excellent

Best wishes...

TIGERJ

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Re: Fuel tap problem
« Reply #8 on: 10 August, 2017, 20:38:50 »
Bess
What a mine of information you are.
Many thanks for such a quick reply.
Regards
           Tim

Bess

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Re: Fuel tap problem
« Reply #9 on: 10 August, 2017, 20:59:23 »
You're welcome :)