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#1 |
Registered User
Join Date: Oct 2011
Location: Plumas Lake, CA
Posts: 386
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which EFI fuel solution for dual tanks would you use?
Currently, all I have left is fuel supply with my 77 dual tank Scottsdale. My dual tanks currently work and transfer great, no issues. Adding the EFI, of course, requires higher fuel pressure and draw.
Ive read that the stock transfer valve wont hold up to fuel draw of an EFI pump, so here's my question. I have BOTH the MSD Atomic fuel pump system I could use with the new Pollack valve (from an 87 FI dual tank system) I have to replace the stock fuel transfer pump.......OR I also have the FI Tech Fuel Command center that feeds of the stock mechanical fuel pump. I'll be using a return system for either fuel supply so that's a non issue. Which way would you guys go? |
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#2 |
Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,526
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Re: which EFI fuel solution for dual tanks would you use?
MSD. Then sell me your FiTech command center.
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#3 |
Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: which EFI fuel solution for dual tanks would you use?
read up first on fitech fuel command centers . i have seen lots of people having problems with them .
high psi pumps for fuel always push better than suck and get cooled sitting in the fuel = why there in the tank . i prefer the 87-91 efi tank/ sender / 96c3500 vortec 350 fuel pump thats a plug/play on a 87-91 efi sender. and you can get efi sender with out pump to save money .
__________________
77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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#4 |
Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,526
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Re: which EFI fuel solution for dual tanks would you use?
I'm in the process of installing the Edelbrock remote sump. I've done 3 FiTech command center installs. Regarding the "lots of people having problems", I see a common thread to the folks making this claim. It appears they don't know the difference between a return line ( related to pump bypass pressure) versus a vent line. If the pump is in the sump, why would you need a return line? On the other hand, a sump is a vessel, thus it needs to be vented, preferably back to the tank.
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#5 |
Registered User
Join Date: May 2010
Location: Shoals, AL
Posts: 299
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Re: which EFI fuel solution for dual tanks would you use?
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#6 | |
Registered User
Join Date: Sep 2009
Location: Beaverton, OR from WA State
Posts: 1,515
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Re: which EFI fuel solution for dual tanks would you use?
Quote:
http://products.pollakaftermarket.co...elector-valves
__________________
Devin 1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt 1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050 1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350 My Introduction with my '83s History New Daily, the '96 |
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#7 |
driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,720
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Re: which EFI fuel solution for dual tanks would you use?
So the fuel pump sucks fuel from the tanks threw the valve before pressurizing and sending it foward? That's a bit absurd and poorly designed. Pumps should push, not suck. Stock transfer valve should have fuel being forced threw it. Unless your saying the stock valve won't handle high fuel pressure?
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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#8 | |
Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: which EFI fuel solution for dual tanks would you use?
Quote:
the vortec series pump lots are using in tank are 60-65 psi rated for there specific application . fitech and snipper use 58-59 psi .
__________________
77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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#9 |
Registered User
Join Date: Oct 2011
Location: Plumas Lake, CA
Posts: 386
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Re: which EFI fuel solution for dual tanks would you use?
Yes, he's right. Apparently the valve won't hold up to the pump draw. I already have the FCC so I guess I'll try this route. I had thought about getting rid of one tank since I should have increased fuel mileage and also have the standard MSD pump, but like the extra 20 gallons.
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#10 |
driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,720
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Re: which EFI fuel solution for dual tanks would you use?
Thats where you confused me. A draw has always been a suction to me [the intake to the pump, not the pressurized output], you guys are referencing the pump output/pressure in the fuel lines. That's pushing not drawing.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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#11 |
Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,526
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Re: which EFI fuel solution for dual tanks would you use?
This thread has become waaaaay overcomplicated.
Last edited by SunSoaked; 11-30-2017 at 09:07 AM. |
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