can a stock eg return line handle 2 pumps?
10-16-2005, 06:39 PM
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Mr. Badwrench
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can a stock eg return line handle 2 pumps?
like the topic says. i am designing a parallel fuel system, basically it is 2 pumps 2 feeds, 1 return. we used to run 2 pumps on the buicks and the stock 5/16 ths return line worked fine. t.i.a.
10-17-2005, 04:49 AM
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Re: can a stock eg return line handle 2 pumps? (boostedcivicsir)
Your asking a question about something I don't think anyone has bothered to do.I would think if your running two stock pumps you would be OK but if your running to big Aeromotive pumps then I don't think so.I would think Honda would engineer the return line volume with some extra room but not 2 or 3 times the stock capacity.
Glenn
Glenn
10-17-2005, 06:58 AM
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Re: can a stock eg return line handle 2 pumps? (NJIN BUILDR)
well here is the setup i want to run: walbro intank, and another pick-up with an outboard bosch, that will only be switched on at higher boost levels. this is the identical setup we used to run on the buicks. but we used modern muscle 40 gph pumps instead of the walbro's. but thanks for the reply nontheless.
10-17-2005, 07:00 AM
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Re: can a stock eg return line handle 2 pumps? (boostedcivicsir)
I would say no but not from personal experience.
On endyn's site there is a mod to drill a hole in the fuel return cause it isn't even good enough for boosted applications.
When I get on it in my eg, if I have a 1/2 tank, it will show empty at the end of a 1/4 mile run, then slowly go up as it all returns to the tank.
On endyn's site there is a mod to drill a hole in the fuel return cause it isn't even good enough for boosted applications.
When I get on it in my eg, if I have a 1/2 tank, it will show empty at the end of a 1/4 mile run, then slowly go up as it all returns to the tank.
10-17-2005, 07:02 AM
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Re: can a stock eg return line handle 2 pumps? (boostedcivicsir)
I think the only problem it would cause is increased fuel pressure (fuel would be held up, or restricted by the small return line) which you can tune out anyway. How much power are you going for? Must be alot, because Jeff Evans made 65x on a single intank......
10-17-2005, 07:09 AM
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Re: can a stock eg return line handle 2 pumps? (m R g S r)
i am gonna run 1200's with a t3t67 h.o. hoping for over 600 but i think thats a long shot. i just dont want to stress out the walbro. i have -6 from the filter as of now. i think ill be ok, i wont do any more upgrades till i get the 1200's in and get it back on the dyno.
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10-17-2005, 07:25 AM
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Re: can a stock eg return line handle 2 pumps? (boostedcivicsir)
On my car I use feed for return and worked fine. I was running SX pump with -8 an for feed and factory feed for return.
10-24-2005, 02:13 PM
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Re: can a stock eg return line handle 2 pumps? (Turbocivic94)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turbocivic94 »</TD></TR><TR><TD CLASS="quote">On my car I use feed for return and worked fine. I was running SX pump with -8 an for feed and factory feed for return.</TD></TR></TABLE>
hmmm...sounds like a nice alternative...
were you using an external pump?
hmmm...sounds like a nice alternative...
were you using an external pump?
10-25-2005, 01:48 PM
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Re: can a stock eg return line handle 2 pumps? (m R g S r)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r »</TD></TR><TR><TD CLASS="quote">
hmmm...sounds like a nice alternative...
were you using an external pump?</TD></TR></TABLE>
I was running SX external pump with full-race sump.
Only problem with factory feed line is that where it meets the pump is smaller than rest of line. I changed with fuel line and worked great
hmmm...sounds like a nice alternative...
were you using an external pump?</TD></TR></TABLE>
I was running SX external pump with full-race sump.
Only problem with factory feed line is that where it meets the pump is smaller than rest of line. I changed with fuel line and worked great
10-26-2005, 05:32 AM
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Re: can a stock eg return line handle 2 pumps? (Turbocivic94)
so it seems that the general consensus is that a stock return cant handle it, so i think i have made up my mind, that i will do a -8 feed with a -6 return, and an external aeromotive pump.
10-26-2005, 07:23 AM
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Re: can a stock eg return line handle 2 pumps? (boostedcivicsir)
one 255lph is fine... im making 600whp with 1000cc and the regular 255LPH walbro intank with stock lines and fuel rail
Modified by 93H22ACX at 11:57 AM 10/26/2005
Modified by 93H22ACX at 11:57 AM 10/26/2005
10-26-2005, 10:42 AM
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Re: can a stock eg return line handle 2 pumps? (93H22ACX)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93H22ACX »</TD></TR><TR><TD CLASS="quote">one 255lph is fine... im making 600whp with 1000cc and the regular 255LPH walbro intank with stock lines and fuel rail
</TD></TR></TABLE>
well i shall give it a try before i re-do the fuel syste, i have a wideband and a f.p. gauge so i will know off the bat. but thanks for the replies.
</TD></TR></TABLE>
well i shall give it a try before i re-do the fuel syste, i have a wideband and a f.p. gauge so i will know off the bat. but thanks for the replies.
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