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Fuel Tank Woes

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Fuel Tank Woes

Post  FBKev on Mon Jul 23, 2018 2:57 pm

Just cleaned out the Falcon 81 fuel tank, 1st with Cellulose thinners to remove fuel varnish/oil. looking inside it does not appear that bad mainly loose surface rust where the tank has been left empty. It is now soaking in a acid cleaning/ rust neutralising solution courtesy of the pre retirement job. But have noticed a weep on the filler cap side of the headstock U bend:| Looks like I will have to seal it (I use ethanol free fuel which I know is not 100% ethanol free) Going to try Villiers services Tapox, which leads to my question what thread is the internal thread on the tank? to make up a blank.
Thanks in advance Kev.
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FBKev

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Thread

Post  piston 197 on Mon Jul 23, 2018 4:13 pm

The petrol tap thread ?? if so it is 1/8" BSP any central heating/plumbing supplies should have a bung ?
JH
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Re: Fuel Tank Woes

Post  FBKev on Mon Jul 23, 2018 5:55 pm

Sorry didn't make it clear filler cap thread.
Kev.
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cap thread

Post  piston 197 on Mon Jul 23, 2018 6:38 pm

In that case not a clue ,but a large rubber bung might do the job ?
JH
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Re: Fuel Tank Woes

Post  FBKev on Tue Jul 24, 2018 7:33 am

piston 197 wrote:In that case not a clue ,but a large rubber bung might do the job ?
JH
I am thinking along those lines to, just have to take care about the threads getting coated in sealer.
Kev.
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Re: Fuel Tank Woes

Post  FBKev on Tue Jul 24, 2018 5:07 pm

Would you Adam & Eve it. Finished the acid clean/rust neutralise, went well I thought thoroughly washed the tank with hot soapy water and rinsed. left to dry in the sun (at least this weather is good for something) What looks like very thick paint on the tank is actually powder coat! who the heck leaves the tank open when sand blasting!! after 6 hours in the sun a thorough blow through with the air line I think I have got most of the crap out of the tank. I am still going to seal with Tapox and I think an in line filter is in order when I get it on the road. Lucky I used the little aux tank I have for carb balancing for the initial run.
Kev.
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Re: Fuel Tank Woes

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