TheSamba.com :: View topic - Crappy fuel filters..you know which ones!

Wed Dec 19, 2012 8:39 am

Brass barb to AN style fittings are available.... even in Hawaii. They are way cheaper than normal AN fittings. If your concerned with aesthetic match....well thats a whole another thing.

Wed Dec 19, 2012 9:03 am

I don't understand, put 5-10k in a motor, another 2-4 grand in a trans then complain about the cost of quality an fittings :roll:

Wed Dec 19, 2012 9:20 am

Get a filter for a '92 peugeot 106, it's metal, it's mann and it's aound $10.

also on the peugeot it hangs under the tank behind the rear wheel, it can take a serious beating.

Wed Dec 19, 2012 9:39 am

Who's complaining about the cost of fittings?

Just that 95% of VW owners use rubber hose.

BTW... if your tank doesn't have rust, a $5 filter works just fine.

Wed Dec 19, 2012 9:50 am

X2. And the fuel doesn't get much cleaner just because the filter is more expensive, or have more flow capacity.
I use whatever metal filter I can find for OE use that has hose connections. There are lots to choose from.

Wed Dec 19, 2012 10:25 am

... and please dont put the fuel filter in the engine compartment.
I had a plastic once, that cracket. Luckily no fire when the fuel got all over, but its not uncommon for beetles to caught fire because of fuel leak. Some of these fires, can be related to leaking fuel filters.

Wed Dec 19, 2012 1:25 pm

Yeah, makes you think AN fittings are a good idea for the fuel system, huh?

I mean, we spend all this money on AN fittings for oil system when it will work just fine with barbs, but a fuel leak can and often does destroy engine and body. My car survived the fire, but only because someone with a large extinguisher was right behind me and jumped in to help immediately.

Wed Dec 19, 2012 2:37 pm

As saw2 stated the NAPA 3031 is perfect; comes w/clamps/short hoses and has a 12 micron rating, and has lots of media surface area. If you have a tank with rust, a filter in the 30-50 micron rating can be used upstream as a pre-filter. I am not sure what micron rating the in-tank nylon/brass screens are nor it's mesh size, but there wire mesh to micron charts online if any one knows in-tank screens specs.

Tue Mar 05, 2013 11:10 am

"As saw2 stated the NAPA 3031 is perfect; comes w/clamps/short hoses and has a 12 micron rating, and has lots of media surface area. If you have a tank with rust, a filter in the 30-50 micron rating can be used upstream as a pre-filter. I am not sure what micron rating the in-tank nylon/brass screens are nor it's mesh size, but there wire mesh to micron charts online if any one knows in-tank screens specs."

More informationg on wire mesh sizes and mroe specifically micron sizes can be found on manufacturers websites - one for example can be found here: http://www.bwire.com/index.html

They have an entire page dedicated to nylon and brass screens that you mentioned in your above post - if you are looking for specs - use Belleville Wire Cloth , Grainger, or Mcmaster Carr as your supplier of wire cloth or wire mesh.

Tue Mar 05, 2013 11:58 am

I solved my crappy fuel filter problem with this....
http://www.thesamba.com/vw/forum/viewtopic.php?t=545233

Tue Mar 05, 2013 1:07 pm

I'm running a glass one, secured above tranny. had a tank issue, needed to see if clogging, think I got that fixed, will go to alum. soon

Tue Mar 05, 2013 5:27 pm

The Empi style cure to the MANN. I call it the "Mann oh man". :shock:

Thu Mar 07, 2013 12:44 pm

The rule of thumb... 45 micron pre fuel pump. 10 micron post fuel pump. I like the earls or edelbrock fuel filters. if you have a rusty tank epoxy a speaker magnet to the bottom of the tank to catch the rust.

Fri Mar 08, 2013 8:46 am

Just to pour "gas on the fire", so to speak, I like the Fram HPG1 on my daily driven '71 Super and on my '74 Thing.
Street price is about $40.
They are mounted under the fuel tank like this:

Just ignore the second hose, it's for a gas heater.

Interior

I don't have any photos of the filter mounted on the Thing, but this sketch shows that it is mounted behind the front axle beam with 2 stainless steel American style muffler clamps:

Something else to look at is the fuel hose connection to the carburetor. To me, the only positive way to keep the brass tubes from pulling out of a carburetor or fuel pump is to tap carburetor top inlet to 1/16" NPT and use threaded barb fittings. No drilling is needed; the metal is soft and the original diameter is close enough for the tapered tap.
There is a photo often seen here that shows the brass tube safety wired to the carburetor top. While this might hold the tube in place, bear in mind that it does absolutely nothing to guarantee a seal between the tube and the carburetor top. That's where the Loctite comes in, provided the joined parts are cleaned and prepped properly. A tapered pipe thread is much more positive.
Here are a couple of links that might be useful:
Zex.com, a nitrous parts supplier sells a 1/16" NPT tap here:
http://www.zex.com/zx/tools/taps.html?___store=zx
FittingsAndAdapters sells a 1/16" NPT X 1/4" barb here:
http://fittingsandadapters.com/malpiptap.html
their stock # MPT-4-1 is a 1/16" NPT X 1/4" barb.

The barb fittings are brass, with 4 barbs, but if you like, they can be easily turned to the "single bump" barb like this:

I have always preferred the German cloth bound fuel hose, but any fuel hose should be checked on a regular basis.

Good luck, Mondshine

Fri Mar 08, 2013 8:59 am

Simple metal filters with or without fitting for screw on barbs for AN or other fittings is just fine and available and any auto parts....

Wonder why anyone would put glass or plastic in their cars.....

Dale

Fri Mar 08, 2013 9:31 am

i use a metal filter too. was getting 15psi last night, from a very old regulator

going to pick up this new fuel reg today

http://www.oreillyauto.com/site/c/detail/HLY0/1280...;ppt=C0128

Fri Mar 08, 2013 9:43 am

vaughn bros. wrote: The Empi style cure to the MANN. I call it the "Mann oh man". :shock:

Lol!!

Fri Mar 08, 2013 10:25 am

That Malpassi regulator is found in all sorts of Italian cars,Ferraris,Maserati,Lancia,I have even spotted them in Aston Martin,etc,etc.,that glass bowl is 4-5 mm thick!
It is mounted tothe body,not the engine,just like it was when used by factory OEM back in the day.

Fri Mar 08, 2013 10:58 am

Them fancy cannistor filters are a PIA. Although Canton does make a nice 1 micron filter but the Baldwin filters are the best. That is what I use on my top fuel dragster. Fuel is prone to absorbing water so a fancy paper element is a no no. Use a stainless mesh screen or cheap paper type pre fuel pump and a sintered brass / bronze conical type post fuel pump. Your fuel filters should flow a minimum of 65 gph for carbs.

An Oberg filter is a great thing because it tells you stories about your car.

That's a Mallory fuel pump btw. Notice I don't use rubber vibration isolators because its not needed with this badass pump. SOOOO Quiet you can hear a baby fart.