I have tapped and threaded my billet fuel rail to accept the threaded unions.
But, how to i seal these?
Plumbing thread tape isnt ideal and will corrode with contact of fuel.
Could i use locktite thread lock?
try copper washers to seal fittings
tried but not convinced.
Want something to seal the threads?
PTFE tape will not corrode.
What type of fitting have tapped the rail to accept?
Tapered threads (npt, bspt) seal on the threads using ptfe tape or thread paste such as swak or a loctite type pipe sealant.
Most other fittings seal on the faces using copper or dowty washers or o rings.
Alternatively there may be a conical metal to metal seal such as JIC or BSP.
Just a few examples, but basically every fitting is designed to achieve a reliable seal if made up correctly.
So again what type of fitting/connection are you using?
Davie
PTFE tape is the standard reccommendation. I use the thicher "one wrap" gas tape and wrap it untill I can't see he threads.
I presume you are using tapered threads? BSP or NPT. If not you need a fitting with a shoulder and use a copper washer - but your tapping has to be
perfectly ay 90 degrees or it will leak.
Cheers guys.
The unions look like this....
and are tapped into a fuel rail very similar to this.....
Red Foliac jointing compound is fuel and oil resistant.
^^^ thos look like standard 6 or 8 mm hose tails - you can buy them with tapered thread - ofcourse no use if you have tapped to some other size.
That Red Foliac looks just the stuff. 
e-Bay does have its uses. This should do the job !!!
quote:
Originally posted by Peteff
Red Foliac jointing compound is fuel and oil resistant.
quote:
Originally posted by Major Stare
e-Bay does have its uses. This should do the job !!!
If you're not planning on removing them, braze them on....
Not planning on removing it and dont have access to braze them on.
Will the stuff i posted i link to work?