AN fittings are like bling for hot rods. Besides the fact they look cool,they also serve a purpose. Most racing sanctioning bodies frown upon rubber fuel lines since it's kind of a fire hazard. That leaves fuel delivery options to either AN tubing and fittings or metal hardline. AN fittings are of military lineage,They date back to the World War II era when the Army and Navy (hence AN) agreed on a standard size for tubing used. Sizes range from -2 (dash 2 or about 1/8) to -32 ( about 2"). Many parts stores carry cheap sleeving that fits over regular rubber hose to look like AN fittings. Don't be a poser,get the real thing. Follow along as we assemble -8 (1/2) AN fitting and tubing.
Braided steel hose is a little spendy (about $5 a foot) so the old adage "measure twice cut once" has never been more relevant. When cutting braided steel line it's important to wrap it with electrical tape to prevent fraying. Use a hacksaw or cutoff tool, Although I've never tried it some people use a really sharp chisel and a sharp hammer blow.
After removing the tape, slide the nut over the hose until it is flush with the inner lip.
Aeroquip makes these aluminum vise inserts that are really handy to prevent scuffing the fittings.
Place the Hose/nut in the vise. To begin threading the inner fitting onto the nut/hose coat the threads with some light oil. I use a special AN wrench to further prevent scuffing the fittings,you can also use a crescent wrench wrapped in tape. Remember these fittings are aluminum so it's easy to cross-thread.
The finished product!
No comments:
Post a Comment