Thread: Does this qualify as a Hot Rod?

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The best way is with AN fittings, not the cheapest at all but when done correctly they are very safe and don't leak!!! Nobody likes fuel leaks! AN fittings require a 37 degree flare, plus the nut and sleeve on the hard lines. Summit and all the other stores sell the AN to pipe adapters, sleeves, nuts, and tubing. I use aluminum tubing for the hard line, usually 1/2" for a street car which corresponds with a -8 AN fitting. 3/8" line will work too, it's -6 fittings in AN. I just like the bigger line for the added volume and no chance of starving the carb for fuel...

Oh yeah, final thought.... I'd put the shut off valve closest to the tank, then the pump, then a 10 micron filter. I'd make the second filter a 40 or 50 micron filter, and put it to the front of the line, but still under the car and not in the engine compartment!

Originally Posted by Dave Severson

.... I'd put the shut off valve closest to the tank, then the pump, then a 10 micron filter. I'd make the second filter a 40 or 50 micron filter, and put it to the front of the line, but still under the car and not in the engine compartment!

Shouldn't I have a filter between the tank and pump?

Originally Posted by Fauxre

Shouldn't I have a filter between the tank and pump?

Yes and no.... Yes, if it's like a stainless screen type, no if you're talking a paper filter... Fuel should always be pushed through a paper filter, but it can be pulled through a stainless screen.

The reason I use filter after the pump is that if a filter gets clogged, you will burn the pump out when it starves for fuel. If it's pump before the filter, then if the pump gets clogged it should pop the fuse. I'm just so dang fussy about where and what fuel I get these days. On one of the race cars, I run a screen like is used in a dry sump oil system in the scavenge lines in the fuel line(s) between the tank and the pump. Not really a filter, but it will catch any big stuff that falls or gets knocked into the tank when the cap is open.... Having a fuel pressure gauge and keeping an eye on it will let you know when things aren't flowing properly. I use an Autometer isolater for the fuel gauge that way I can have it inside the car. I'm just old and fussy I guess......