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Golfmore

08-29-2005 06:55 AM

What is the largest filter I can use?

In a FL1A application? I want to put a larger filter in my 92 XL all manual. Thanks.

TallPaul

08-29-2005 10:30 PM

The best bet is to run a FL299 which is 1.5 inches longer and the same in all other respects, but probably a thicker can since it is longer. But the FL299 is expensive at the dealer. I order the Purolator version (L40017) for $6 at Advance Auto and they have it the next day. This particular Purolator has the Motorcraft-style threaded end bypass valve too.

Big O Dave

08-30-2005 12:28 AM

TallPaul is right! Here's a list of larger filters, including the FL-299. I've cut open "virgin" filters and measured the surface area of the filter element. TP did the same with the Purolator, which I don't have on my list... perhaps he'll post it, as well.

Here's the list:

Code:

                        Pleat     #           Element      Surface

                        Depth    Pleats       Width        Area

Motorcraft        FL-299        0.750           64              5.50           528.00  

Fram                PH977A        0.656           56              5.69           418.03  

Baldwin         BT251        0.750           51              5.38           411.19  

Donaldson        P550299        0.625           60              5.00           375.00  

Wix             51773        0.688           49              5.13           345.30  



For Comparison (standard OEM size):

Motorcraft      FL-1A   0.719      56         3.75         301.88

The thing to remember is that surface area is not all there is to the filtering ability of a filter... the element material is at least as important (if not more).

Golfmore

08-30-2005 02:25 AM

Thanks for the help.

ford390gashog

08-30-2005 02:30 AM

at kragen you can get 2 purolater filters for 5.00 on sale. they had the l40017 in stock and sold me them both for 5.00.

TallPaul

08-30-2005 07:10 AM

Thanks for posting your list Big O Dave. I tried to link to the Oil Guy site and it would not work. Here is my Purolator L40017 data (used filter vs Big O Dave's were new) next to Dave's FL-299 data:

Code:

Filter        Pleat  #Pleats  Element  Element

         Depth           Width    Area

           

FL-299        0.750        64        5.50        528.00

L40017        0.719        66        5.38        511.00

BTW, someone at this site a couple years ago posted that the longer FL299 was spec for IIRC an '89 F850 with 460 V8 (among many other years and models obviously).

I use the L40017 on my motorhome and sometimes on my 300 I6. Not to leave the very good FL1A behind, I am running that on the Aerostar 3.0, which specs a FL400.

Big O Dave

09-10-2005 11:18 AM

*bump* ;) :-wink

Golfmore

09-10-2005 03:47 PM

Thanks guys for the help. I was considering the filter area, and possibly a little more cooling?

boxcar_tommie22

09-18-2005 03:50 PM

i my ford calls for motorcrat fl820s...i use a much larger size 5.6 in long compared to fl820s 4 incs...fleetguards lf3315 and baldwin b281...

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