Thread: In-Line Fuel Filters

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I been to couple shows sponsored by local car clubs. Glass tube filter are not aloud. For fear of braking causing fire. I have filter befor and after pump.

i have used the frams but a pain in the butt to get apart under the car with fuel all over and playing with the O ring . i have used the in lines to they work but the last 4 jobs i have used the marine type that look like a oil filer they are much better then the frams to work with

I don't use anything but metal filters, whether it's at the tank or at the carb..... I don't like the thought of glass or plastic filters....IMO the metal canisters are a lot safer.... The convenience of being able to see what's in the filter is far outweighed by the vulneribility of plastic and glass filters to fire due to damage or accidental breakage......

I had a stamped metal inline type.didnt get the job done,ended up pulling my new holly apart and finding a 1/4 inch of rust sediment in the bottom fuel bowls of my new carb.ended up putting in a fuel cell, new lines ,fuel pump and a clear fuel filter I can see in and a new set of plugs due to fouling from the stuck needle valves in carb.a little extra money for a good fuel filter is a wise investment

Well, to each his own.... Think I'll stick with a metal filter out of the engine compartment area.... It's good enough for the majority of the race sanctioning bodies, so I guess that's good enough for me.... Just don't like the idea of plastic or glass full of fuel hanging over the top of my engine......
Regular fuel system maintenance and starting out with a clean system will pretty much eliminate the problem... That, and knowing the quality of the fuel you buy.....

I have used the clear ones for years and many cars the one that comes apart and has saved me on catching a plugged filter with garbage from old vehicle just kept cleaning and changing till things cleared up. never a problem, but thats me and I can see people not likeing them, if so don't use them then. ED

Until you've had a fire and a chance to test out that fire extinguisher you ALWAYS carry with you (YOU DO carry one, don't you??), any old fuel filter is fine. I had two underhood fires on my '79 truck. The first was a split o-ring on the back bowl fill tube on the @#$%$# OEM Holley carb the second was a broken glass fuel filter that I installed with an E-brock carb. This settled 2 questions in my mind - never use a single feed Holley 4160 and never use a clear glass (or even plastic) fuel filter. It gets expensive plus time consuming to repair the damage - control and lights wires, vacuum hoses, ignition wires, under hood insulation, air filters, etc.(luckily, no hood paint either time), and without the extinguisher, maybe the entire truck. But with that said - to each his own........

I use a Mallory electric fuel pump and a Mallory inline filter as shown.

Dave wrote:

That, and knowing the quality of the fuel you buy.....

Well, that could be a problem. I don't usually have problems with gas, local or otherwise, but I have had some bad experiences on the road. On the way to the Turkey Run several years ago we stopped in South Carolina for gas at a Sunoco station. After refueling I just got off the lot when the car started acting badly. Pulled over at the next station and had to dump the gas filter. Had gotten some water and a little crud from the station. Luckily, I had a spare filter and after installation we were back on the road with no more problems. Never can tell what you might run into at an unfamiliar gas pump.

Originally Posted by mopar34

Dave wrote:

Well, that could be a problem. I don't usually have problems with gas, local or otherwise, but I have had some bad experiences on the road. On the way to the Turkey Run several years ago we stopped in South Carolina for gas at a Sunoco station. After refueling I just got off the lot when the car started acting badly. Pulled over at the next station and had to dump the gas filter. Had gotten some water and a little crud from the station. Luckily, I had a spare filter and after installation we were back on the road with no more problems. Never can tell what you might run into at an unfamiliar gas pump.

Always a good idea to carry a spare filter!!!! Especially road trippin'!!!! On the 'maro I've got an inline with a stainless cleanable element, and one of the good old reliable Fram canister filters with the replaceable element....

Fuel pressure gauge is always the first indication of a filter problem.... I put a small mark on the gauge face where my pressure is @1,000 rpm, anything less then that and the first thing I check is my filter....

I ran two Russell filters on my Cobra. One at the fuel tank and the other just before the carb/carbs. I faithfully cleaned them at every oil change and never had a problem. Glass filters were not allowed for safety reasons at most open track or auto-x events.

Originally Posted by G.R.

I ran two Russell filters on my Cobra. One at the fuel tank and the other just before the carb/carbs. I faithfully cleaned them at every oil change and never had a problem. Glass filters were not allowed for safety reasons at most open track or auto-x events.

GR, I was considering running two of the cleanable filters, but wasn't quite sure the filtration was good enough.... Did you ever have any problems with contaminents making it to the carb, or did the filter it ok????

I never had problem with my setup. I was running, intially,a 4bbl, then went to Weber 8 carb stack induction. Webers are notoriously finicky...until you get them set right.
I rarely got any crud in the filters when I cleaned them. I ran them for about 4 1/2 years on my mild build 325 hp sb Ford before I sold the car. I used the mechanical fuel pump and had an electric fuel pump hooked up that I never used, though it was installed with a dash switch to toggle it on.

Thanks GR... Think I might just do away with the replacable and get another cleanable!!! Never was sure I could trust them, but if they keep things clean enough for Webers, they will certainly work fine for a Holley!

Thanks to everyone for the words of advice and experience.
I think I will follow the trend of both a canister type before the fuel pump and a smaller in-line just before the carb.

Thanks