Another fuel pump question...

Upon reading tech manuals, the passing test for fuel pressure is 20-24psi, and regulated at 21psi at spfi unit. I can't find that pump anywhere except for several hundred bucks (I sure as hell aint goin that route). Will a 10-14psi (very common) pump work? Any suggestions for non-subaru pump, Cheap?

The 10-14 psi pump is larger, will it venturi its way to good enough? (the correct pressure via shrinking volume) I had great luck with a carb model and non-subaru fuel pump, i wish to do the same ,cheaper (and ashamed to say much much stronger than subaru OEM).

 

 

-=I seem to live here lately......

"Will a 10-14psi (very common) pump work?"

nope, not enough pressure even choked down

 

" Any suggestions for non-subaru pump, "

Napa sells a Ford FI inline pump for about 70 or 80 clams

 

"Cheap?"

depends on how you look at it?

Used one from one of the junk yard dogs

is a better solution I feel.

Thank You.

Ford inline, thats a start. Do you know pressure or years/models to inquire? I am putting a metal filter *before* the pump this time (unless pump has one).

I did a quik search for you and found this

hope it helps

 

EA82 replacement fuel pump

Hey thanks again.

That answered a thought about fuel pressure above 21psi. ..So the stock pressure regulator can indeed handle well over 24psi pumps. That broadens the horizon a bit.

Upon checking ECM codes i realized my ecm has been in "u-mode" and clearing memory every restart for a year. I unplugged a wire and car seems to be way better (may not be fuel pump yet!). It does have quite a sniff of fuel when running tho right from pump( with no leaks), very rusted, could possibly be aerating. ....

 

Meanwhile, late afternoon today my loyale almost killed me when the inner rear wheel berring pulvarized just as silent as a sunrise while pressing the brakes on a 55mph corner. I "wiggled" all the way home (all problems are expected, considering my vow to rebuild everything).

20 miles home on annhilated berring, just as quiet as i didnt know it happened (high temp synthetic grease save the day...err...my life?).:cool:

Has anyone used an "msd" 40psi fuel pump (or any other msd)? They are everywhere I look (a dime a dozen so to speak). I already have in mind the mods needed to have good fit.

if cheap is important, the best option is a couple used units (order from the south or other non-rust states). they tend to last quite awhile if they don't rust out. throw a spare in the trunk, they're super easy to swap out (not counting the 3 mounting bolts that are likely rusted). have zip-ties ready too.

 

another board member installed an MSD fuel pump, $100 new here:

http://store.summitracing.com/partdetail.asp?part=MSD%2D2225

 

here are discussions about installing the MSD pump on an ER27, which is the same pump as the EA82:

 

http://xt6.net/forum/viewtopic.php?t=1742

http://www.xt6.net/forum/viewtopic.php?t=4104&highlight=fuel+pump

 

i bought this same pump and couldn't get it to work right. if i hard wired it, it worked fine, but for some reason it wouldn't come on if i plugged it in? maybe i had the wiring backwards..doubtful since i hard wired it fine, but who knows. it's been sitting since last summer and i'm about to try to get it to work again in my XT EA82 instead of my XT6.

 

i had good customer service from Summit, they said they'd replace the pump eventhough i wasn't sure if i did something wrong or not. i kept it since i was not confident the pump was to blame.

Hey thanks alot. It answered the 40psi Question (it will work). The burp and gurgles seemed to stop with consistently warmer weather. This 2wd is the fastest take off, highest revving, EA82 I have ever been in (I need a 6th gear! ). The OEM fuel system design (it is safe to assume) is not really accustomed to this,along with exhaust mod and air intake boot mod. I did my mods for the 90hp to return to normal. I seem to be exceeding things ever so slightly :-\

Perfect weather stops problem nearly completely.

here is the cheap and easy way. get the ford pump and buy a cheap variable fuel pressure regulator. Dial it in @ 24PSI and be done with it