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Old 08-20-2003, 12:07 AM   #1
supermoose
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Default most direct fuel pump convevrsion for 93

hey- wondering what was hte most direct plug/play fuel pump conversion for the 93 L, im stuffing in a ej20G, so i need some more gas. how hard is new WRX pump? any walboro plug/play, or legacy turbo?


help is appreciated

h
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Old 08-20-2003, 09:44 AM   #2
Storm
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If your 93 doesn't have the in-tank pump, I'd say find a yard that has a WRX tank or car in stock and grab the whole assembly. everything should match up. If you have the in-tank pump, then a WRX pump is a direct plug&play.

Jay Storm
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Old 08-20-2003, 04:09 PM   #3
supermoose
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Default intank pump

how do i tell if i have intank pump?

its inside the tank i know for sure. it looks like a yelowish gold thing. whats the deal with the conotroller for the WRX pumrp? do i need that?

h
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Old 08-20-2003, 05:04 PM   #4
Jaxx
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you have an intank pump

but he is right you will need the whole assembly

the diamater of the 1.8 pump is larger than the later higher flow pumps ..

fwiw the 1.8 pump is probblay fine for a 2.5na with 280cc injectors

i have been using my 1.8 pump on my ej20 with 425cc injectors to ~9psi bar of boost w/o probs (i have a fuel pressure gage)
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Old 08-20-2003, 05:22 PM   #5
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Default faq

any one point me to a faq to do a bigger pump conversion?
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Old 08-21-2003, 08:08 AM   #6
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i just did this conversion on my 93 to a WRX pump. here is what i did and i had no problems.

i bought a WRX fuel pump and an RS fuel pump assembly. i used the fuel pump wiring from the RS fuel pump on the WRX pump and it plugged right into the 93 assembly. i also used the RS filter bag and tube coming out of the top of the pump. i set it back into the 93 assembly and tightened 'er in there. should work just fine. hope that helps.

Brent
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Old 08-21-2003, 09:37 AM   #7
Storm
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Did you extend the return line to a point closer to the inlet sock? I just got done doing that to stave off the dreaded fuel starvation. It's very similar to what the STI has in it's tank, only no dedicated box to house the whole shebang.

It works! Now we're having problems with the valve that controls the feed from the aux. fuel delivery on the other side of the tank. It feeds into the main return line in what I can only describe as suction feed.

Back on-topic. I haven't opened my 1.8 tank yet, so I don't know for sure if there's a way to make the WRX pump stay put where it's supposed to on the 1.8 tank assembly. I will be soon though...since my tank has too much fiberglass to metal ratio for my taste (big patch). I have another tank, just need to get it prepped and then put it in. Might as well be doing a whole friggin drivetrain swap since it's all gotta come out for the tank anyway....

Jay Storm
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Old 08-21-2003, 09:54 AM   #8
scoobyimprza
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oh yeah, i forgot, i used a zip tie too. go figure, good ole zip ties
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Old 08-21-2003, 11:18 AM   #9
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fwiw when i asked this question i was told that a 92+civic or integra pick up/pump are the same as the RS and about 1000000 times easier to find..
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Old 08-21-2003, 04:14 PM   #10
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Do they also have the fuel temperature sensor with the same specs? While it may not be needed for simply retrofitting a larger pump, this is needed for USDM EJ25 and EJ20 swaps.

-Jon
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Old 08-21-2003, 05:20 PM   #11
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Default honda parts

anyone have a pic of the honda parts in question? ive got a pump from a 95 integra lying around, i guess id have to frankenstein it somhow with a WRX fuel pump?

scoobyimprza - u got anypix of what needs to get done? can u jsut pirate the parts of the stock 93L pump?


h
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Old 08-23-2003, 02:25 AM   #12
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Default look what i just bought!!

i got this on ebay for $15 after shipping.
it look to be the same dimensions as a stock '93 L pump, but its for the nissan silvia sr20det (200hp) (and lets all remember that subaru and nissan use alot of duplicate parts, i.e., the sr20det injectors fit in the 1.8).

i've had my pump out and swapped in a wrx pump, it just took some dremeling to get the wires to fit, then a large zip tie to hold the pump to the arm that holds the pump.

i paid $30 for the wrx pump on ebay, but managed to break it before i got it finally installed. but it did fit.

the sr20det pump also has open screw in leads, just like the L pump, whereas the wrx pump had a plug.

the sr20 pump should be good for around ~250hp from what i remember.




Last edited by sick1.8t; 09-09-2003 at 08:09 PM.
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Old 08-23-2003, 11:57 AM   #13
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Default Re: honda parts

Quote:
Originally posted by supermoose
scoobyimprza - u got anypix of what needs to get done? can u jsut pirate the parts of the stock 93L pump?
i didnt take any pics, but what i did was used the WRX pump, the RS harness and filter bag, then the hose and housing was all the stock L stuff. then i zip tied it onto the assembly. not too hard.
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Old 08-23-2003, 07:03 PM   #14
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Default Re: look what i just bought!!

Quote:
Originally posted by sick1.8t
...but its for the nissan silvia sr20det (200hp) (and lets all remember that subaru and nissan use alot of duplicate parts, i.e., the sr20det injectors fit in the 1.8).
Whatever do you mean?



That is a picture of a set of relays on my MY03 WRX wiring harness...

-Jon
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Old 08-27-2003, 06:09 AM   #15
supermoose
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Default fuel pump

hey- any other suggestions on fuel pump?

u think i could limp by with a EJ20g on the stock pump for a little bit? ive heard of guys running the stock pump on turbo 1.8;s at roughly 180 WHP, which should be close rite>? i know its gota be swapped, but supply is NA rite now

anyone know actually how much teh 1.8 pump flows?

h
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Old 08-27-2003, 10:07 PM   #16
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i dont know of anyone who actually knows how much the pump flows, but despite its larger size it definetly flows LESS than the wrx pump. but you might be ok without it. if you have an air/fuel gauge you would be able to check see.

i'll make sure my wrx pump is actually broken....maybe it just wasant getting power. regardless i'll test it and i'll sell it if you are interested.
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Old 08-30-2003, 11:14 AM   #17
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Default fYI

I have a WRX fuel pump housing if anyone needs it.

Imprezd~
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Old 08-30-2003, 04:08 PM   #18
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just get a fuel pressure guage and monitor it, if you can maintain pressure with the 1.8 pump use that.
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Old 09-03-2003, 11:43 AM   #19
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Default Re: fYI

Quote:
Originally posted by Imprezd
I have a WRX fuel pump housing if anyone needs it.

Imprezd~
I just PMd you about this!

Jay Storm
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