is my fuel pressure okay?
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Honda-Tech Member
Joined: Aug 2003
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From: in the streets
is my fuel pressure okay?
jdm gsr motor in a dx eg hatch
jdm dc 4-1 header
skunk2 IM
cai
msd ignition kit
CTR intake cam
aem fuel rail
kenji chipped p28 ecu
2.5" exhuast piping
apexi muffler
i'm using the stock dx fuel pump and i have my fuel pressure guage on the fuel filter. right now, the fuel pressure at idle is reading at 39-40 psi with the vacum hose on.
jdm dc 4-1 header
skunk2 IM
cai
msd ignition kit
CTR intake cam
aem fuel rail
kenji chipped p28 ecu
2.5" exhuast piping
apexi muffler
i'm using the stock dx fuel pump and i have my fuel pressure guage on the fuel filter. right now, the fuel pressure at idle is reading at 39-40 psi with the vacum hose on.
MiG-21 superfan
Joined: Mar 2001
Posts: 8,628
Likes: 3
From: near the ocean, Moderator City, NJ
Re: is my fuel pressure okay? (hondaeg8)
55 psi hose off promotes the best atomization...you just have to trim and fine tune...
you are taking a gamble with that pump considering your setup....
you are taking a gamble with that pump considering your setup....
Thread Starter
Honda-Tech Member
Joined: Aug 2003
Posts: 2,725
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From: in the streets
Re: is my fuel pressure okay? (builthatch)
i just took out the 255lph fuel pump. isn't that too big for just the bolt ons that i have?
i thought the 255lph was for boosted motor. i used to have turbo, thats why i have
that fuel pump.
the stock gsr fuel pump won't do?
i thought i was running too rich cause of the walbro 255lph fuel pump, thats why
i took it out and put the stock one back in. i can get a gsr fuel pump this weekend.
the walbro fuel pump raised my fuel pressure up to 60 psi at idle with the hose on.
i thought the 255lph was for boosted motor. i used to have turbo, thats why i have
that fuel pump.
the stock gsr fuel pump won't do?
i thought i was running too rich cause of the walbro 255lph fuel pump, thats why
i took it out and put the stock one back in. i can get a gsr fuel pump this weekend.
the walbro fuel pump raised my fuel pressure up to 60 psi at idle with the hose on.
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MiG-21 superfan
Joined: Mar 2001
Posts: 8,628
Likes: 3
From: near the ocean, Moderator City, NJ
Re: is my fuel pressure okay? (hondaeg8)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaeg8 »</TD></TR><TR><TD CLASS="quote">
the stock gsr fuel pump won't do?
</TD></TR></TABLE>
sure it will, however, you said you had an eg dx pump, that WONT do....
i suggesteed a Walbro because they are new and inexpensive vs. a used Honda pump that you can never be sure how long ya got left...
if the 255 would not go lower than 60 psi, that means the return orifice on your regulator was entirely too small. http://www.theoldone.com/articles/regulator/
the stock gsr fuel pump won't do?
</TD></TR></TABLE>
sure it will, however, you said you had an eg dx pump, that WONT do....
i suggesteed a Walbro because they are new and inexpensive vs. a used Honda pump that you can never be sure how long ya got left...
if the 255 would not go lower than 60 psi, that means the return orifice on your regulator was entirely too small. http://www.theoldone.com/articles/regulator/
MiG-21 superfan
Joined: Mar 2001
Posts: 8,628
Likes: 3
From: near the ocean, Moderator City, NJ
Re: (LSVTEC 91 Civic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC 91 Civic »</TD></TR><TR><TD CLASS="quote">I have a stock pump in my 91 hatch, I'm running 345cc prelude injectors at 43PSI w/ hose on. No trouble here...</TD></TR></TABLE>
maybe its just me, but i would not gamble with a 13 year old 79lph pump to fuel anything but my pocketbike....
why skimp on the 90 bux for a Walbro?
maybe its just me, but i would not gamble with a 13 year old 79lph pump to fuel anything but my pocketbike....
why skimp on the 90 bux for a Walbro?
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Joined: Feb 2004
Posts: 7,252
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From: Canada
Re: (builthatch)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by builthatch »</TD></TR><TR><TD CLASS="quote">maybe its just me, but i would not gamble with a 13 year old 79lph pump to fuel anything but my pocketbike....
why skimp on the 90 bux for a Walbro?</TD></TR></TABLE>
My VAFC is already tuned and corrected as much as -27%.. No need for more fuel. Car only has 100,000mi on it, and the stock fuel pump will probably last longer than my engine.
why skimp on the 90 bux for a Walbro?</TD></TR></TABLE>
My VAFC is already tuned and corrected as much as -27%.. No need for more fuel. Car only has 100,000mi on it, and the stock fuel pump will probably last longer than my engine.
MiG-21 superfan
Joined: Mar 2001
Posts: 8,628
Likes: 3
From: near the ocean, Moderator City, NJ
Re: (hondaeg8)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaeg8 »</TD></TR><TR><TD CLASS="quote">whats the difference between the eg dx pump and a gsr pump?</TD></TR></TABLE>79lph vs. 135lph
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