Guys,

Looking to relocate my fuel filter soon and move from the stock Mazda filter to something serviceable. My FPR is a Weldon, so I've started looking at those, but am open to any and all suggestions. I've noticed that most filters come in 10, 40 and 100 micron varieties. Is 40 adequate? 100 overkill? Just trying to understand my options.

Thanks in advance for your ideas and recommendations!

 

i also have a weldon and when i called and they recommend 10micron for after the pumps.
here is p/n i have WEQ0810CLN
// WELDON RACING PUMPS // Fuel Filters -- Weldon Racing Pumps

 

iirc 100 micron is for pre-pump in the tank (the fuel pump sock), you'll use the 10 micron for between the pump and the injectors.

I went with the Fuelab filter (http://fuelab.com/products/performan...uelab-filters/) because they're good filters, decently priced, and they come with a form of mounting.

 

Thanks guys. Appreciate both recommendations.

 

After my second Denso super pump went bad, I went all Aeromotive.
The stealth pump and this filter:

Aeromotive | 12301 - 10 Micron ORB-10 Red Fuel Filter

Pressure is so rock steady at my max of 18 psi boost.

 

Thanks Chuck. Yes, that's another one I was looking at. How often are you changing the filter elements? Annually??

 

Only installed the pump and filter last December. Most likely will change it as I did the stock one, about every three years.

 

I use this one it work fine and the best part it was small enough to moved next to black plastic guard on the driver side and it's cheap plus you can change the element. http://www.summitracing.com/parts/pf...s/?prefilter=1

 

I'm using a Porsche OEM filter. It's reasonably priced, has a very large filter area, and you can screw in AN adapters at either end --> Porsche Mahle OEM Fuel Filter 1983-1998

 

Interesting... how much fuel pressure do you run (base + boost)? Also, do you remember the metric size these use?

 

I run 75psi base fuel pressure, and 12psi boost. The filter has a laser welded can, so I think it will handle significant pressure, but I don't know the rating. It's been a long time since I installed it, so I don't remember what the threads were, but I would guess M12X1.5, like the output on Bosch fuel pumps.

 

I'm going to run a similar setup to elwood, but with -6 AN adapters.

-6AN Fuel Filter Combo - 034Motorsport | Performance Parts for Audi, Porsche, and Volkswagen

A few friends have used them on their cars, and for the money, you can't beat it. Replacement filters are ~$10

 

I've been usig Kinsler Monster Mesh for about a year. 10-micron and lots of surfce area. Switched from a Kinsler BRL that used for about 8-years. Don't remember the surface area increase but it was significant. My testing showed about 5-psi loss from fitting at top of tank bulkhead to return side of rails verus 8-psi with the older BRL filter. -6AN lines, KG rails, test at 50-psi with Aeromotive Steah 340 pump.

If doing over, I'd investigate Fuel Lab filter that is 6-micron. Would like to know surface area.

Most filter I found in searching were smallest 10-micron but no surface area info.

Jack

 

Sweet.... I just bought the Mahle KL-22 for $16 at a European parts store my friend works at. Hopefully the metric to AN won't be too much.

I also have a Wix race filter with replaceable cartridge I might try... good flow rate at 12GPM but it says max operating pressure is 50psi which might be an issue...

http://www.wixfilters.com/Speciality/Racing.aspx

http://www.wixfilters.com/Lookup/Par...spx?Part=24003

 

For the Mahle filter, here's a $5 adapter --> http://www.summitracing.com/parts/rus-670510/overview/ If it came with fittings, you should be able to reuse the crush washers.

Regarding the Wix filter, I'm trying to wrap my head around what the pressure rating on an element really means. Unless the thing is clogged, or you're greatly exceeding its flow rating, the pressure across the element should be very low. Have you tried talking to Wix directly? It looks like a good filter.

 

Almost embarrassed to ask but I'm running a z32 tt filter with my stock fd. It's off a tt car and has a straight threw design. But I don't know the flow rate. Should I be concerned about this?

 

I'm not familiar with stock FDs (my car's an FB, and it's modified with an aftermarket ECU), but if you can monitor your fuel pressure while at max boost across the RPM range, that would tell you if your system is delivering sufficient fuel, which is what really matters.

FWIW, I did some fuel pump testing recently with a Bosch -044 (motorsport pump). With the thing running free flow at 13.8V, delivering just over 300LPH (I measured it to be sure, and the Bosch flow chart is spot on), the fuel flow through a 3/8" hose seemed surprisingly slow. In retrospect, I should have taken a video. It was somewhere between a dribble and a good stream -- a weak stream.

The point of this is that the flow through a typical size fuel line at the HP levels most of us are running isn't as demanding on components as I would have guessed. Maintaining reasonable flow as the system pressure increases is the real challenge.

 

I've heard of higher power 240sx guys running that filter, and I had a similar sized one on my FC last year when I was making about 320HP to the wheels. You'll be fine.

 

fuelab is a great option