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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Petrol taps
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<blockquote data-quote="oexing" data-source="post: 114022" data-attributes="member: 1493"><p>Any seals exposed to modern fuel have to be Viton, teflon or cork, no NBR will do. So when going for o-rings or fuel tap seals you will choose viton or cork. Alcohol is NOT the point but all these thinners in the fuel like acetone, toluol, butane . So you could decide on the all brass taper type taps or modify the plain gasket taps like below in links for cork seals, rubber will not do. Auto fuel does not lubricate the rubber seal so operation is not smooth. I had best success with home made cork seals in the plain gasket types but then apart from the fiddling with delicate corks sanding them flat and drilling four holes to suit the tap housing you will be exposed to several bottles of red wine till you got a suitable collection of corks for that job - ah well, so be it . . . .</p><p> The all-brass taper type tabs will not work in the long run as like materials, brass on brass , cone-in-case , will lead to seizures and f***ed-up faces on the tapers and consequent leaks. So you´d copy the taper in stainless and lap that in the case for a permanent solution. </p><p> The ball valve taps should have teflon seals so great for modern fuels but I would not accept them on my classics for ruining the looks. </p><p></p><p> Vic</p><p></p><p><a href="https://www.ebay.de/itm/TRIUMPH-T140-NORTON-COMMANDO-PETROL-FUEL-TAP-BAP-TYPE-60-7266/113962455912" target="_blank"> fuel tap 1/4</a></p><p></p><p><a href="https://www.ebay.de/itm/NORTON-TRIUMPH-T140-79-on-BAP-FUEL-TAP-60-7266-1-4-x-1-4-NORMAL/274102562051" target="_blank">tap 1/4 "</a></p><p></p><p><a href="https://www.ebay.de/itm/Triumph-Main-Petrol-Tap-filter-locknut-and-level-tube-Thread-1-4-x-1-4-83-2800/121942373973" target="_blank">circlip tap 1/4</a></p></blockquote><p></p>
[QUOTE="oexing, post: 114022, member: 1493"] Any seals exposed to modern fuel have to be Viton, teflon or cork, no NBR will do. So when going for o-rings or fuel tap seals you will choose viton or cork. Alcohol is NOT the point but all these thinners in the fuel like acetone, toluol, butane . So you could decide on the all brass taper type taps or modify the plain gasket taps like below in links for cork seals, rubber will not do. Auto fuel does not lubricate the rubber seal so operation is not smooth. I had best success with home made cork seals in the plain gasket types but then apart from the fiddling with delicate corks sanding them flat and drilling four holes to suit the tap housing you will be exposed to several bottles of red wine till you got a suitable collection of corks for that job - ah well, so be it . . . . The all-brass taper type tabs will not work in the long run as like materials, brass on brass , cone-in-case , will lead to seizures and f***ed-up faces on the tapers and consequent leaks. So you´d copy the taper in stainless and lap that in the case for a permanent solution. The ball valve taps should have teflon seals so great for modern fuels but I would not accept them on my classics for ruining the looks. Vic [URL='https://www.ebay.de/itm/TRIUMPH-T140-NORTON-COMMANDO-PETROL-FUEL-TAP-BAP-TYPE-60-7266/113962455912'] fuel tap 1/4[/URL] [URL='https://www.ebay.de/itm/NORTON-TRIUMPH-T140-79-on-BAP-FUEL-TAP-60-7266-1-4-x-1-4-NORMAL/274102562051']tap 1/4 "[/URL] [URL='https://www.ebay.de/itm/Triumph-Main-Petrol-Tap-filter-locknut-and-level-tube-Thread-1-4-x-1-4-83-2800/121942373973']circlip tap 1/4[/URL] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Petrol taps
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