![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
|
Quiet electric fuel pump? Timed relay?
I'm looking for two things that may not exist, but maybe they do and I just need someone to point me at them!
I need to run an electric pump in one of my vehicles because the ZZ502 big block doesn't have a mechanical pump boss (or pushrod). Right now it has the standard old Holley Blue pump on it, and it's too loud and annoying. Sounds like my power steering is shot! So first, does anyone have any experience with a quiet pump? I see Edelbrock sells a "Quiet Flo" but marketing is marketing - anyone have any experience with it? Second, has anyone ever heard of a timed relay for pre-computer cars with an electric pump? I need a relay that will prime for a few seconds when it first sees power and then resume, like normal, when it sees the ground signal from the oil pressure switch. Right now I have just a standard relay, which works great while the car is running but if the float bowl gets empty, it's got no way to prime it. I could add a bypass switch but I'm sure there must have been a factory setup I could steal a relay from. So far though everything I've found still relies on a computer (ECM) to tell it to prime. Thanks! Dave |
![]() |
![]() |
![]() |
#2 |
Registered User
![]() Join Date: Sep 2004
Location: Topeka, Ks
Posts: 604
|
Re: Quiet electric fuel pump? Timed relay?
My firebird used to be fuel injected. I put a carb on it, and ditched a ton of wiring. I still kept the in tank electric pump. Its just on a return type regulator. I left all the factory wiring in place for the pump. So still have relay and oil pressure switch. ECM never controlled pump on tuned port or tbi cars. Its all done with relay and oil pressure switch.
When car sets for a while, like over a week I have to crank on it alot and then once it gets good oil pressure it will kick on pump for several seconds. I quit cranking and let it prime, and it then shuts off once oil pressure is lost. Then car fires right up and with oil pressure kicks pump back on. I would set it up with a relay and a oil pressure switch and it should get you results you want.
__________________
Daily-94 K2500 350 5spd extended cab longbox Project Red Velvet-68 C20 396-th400-AC-PS-PB-all original except for the 8 track and the gun rack. Build thread>>>>http://67-72chevytrucks.com/vboard/s...d.php?t=495881 My 01 TA and 88 Formula hide in the garage. :-) |
![]() |
![]() |
![]() |
#3 | |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
|
Re: Quiet electric fuel pump? Timed relay?
Quote:
On the TBI cars did they have a bypass to run the pump during cranking, or I wonder how they handled it from the factory? If the relay had a timed feature, that might work. Or failing that I could try adding a cranking bypass so it runs during cranking regardless. Failing that I found (someone suggested) a diesel relay that does what I describe. It's $150, so not cheap, but seems like it would work. |
|
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Oct 2009
Location: San Diego, CA
Posts: 39
|
Re: Quiet electric fuel pump? Timed relay?
I just installed an Edelbrock Quiet-Flo in my truck. I had a Carter pump in the truck that was annoying. The Edelbrock is much quieter, you can still hear it, but it doesnt drive you crazy. Though honestly, for $170 I expected it to be quieter.
|
![]() |
![]() |
![]() |
#5 |
I dun gradjiated collij!!!
Join Date: Jan 2006
Location: St. Helens Oregon
Posts: 1,751
|
Re: Quiet electric fuel pump? Timed relay?
Run a bypass hot lead from the ACC side of your ignition switch directly to the coil side of the relay (bypassing the oil pressure switch). Turn to the left to prime then turn to the right for start up... That's how I'm setting up the Malibu.
__________________
Built NOT Bought. Viper Red 1971 LWB C10 355 Vortec W/700R4 4/5 drop AKA Screamin' You are missed!
2006 F150 XLT 5.4L Triton Rollin' on 22s the "F1" 67 C20 PS/AC/327/TH400 we call 'er "Bessie" 67 Malibu PS/ZR1-LS1 Brakes/350 Vortec/700R4 2/2 drop on 18" 338s - Tracy's "Boo" Boosted '67 Cougar EFI 5.0 HO roller motor/T5/8.8 Tracloc/ 4 wheel disks - "Project Panther" 79 Honda Z50 - stretched, cafe'd and hotrodded 125CC Lifan/5spd FEAR THE MONKEY! |
![]() |
![]() |
![]() |
#6 |
Fun Stuff
![]() Join Date: Jan 2010
Location: Sedro Woolley, WA
Posts: 400
|
Re: Quiet electric fuel pump? Timed relay?
The starter usually has a small terminal that is hot during cranking. Run a wire from this terminal to the pump relay,the pump will run while the starter is cranking, then stay running from the oil pressure switch when key is released.
__________________
Jay 68 C10(project) 88 Honda Accord(DD) 93 Chevy Astro EXT 2wd |
![]() |
![]() |
![]() |
Bookmarks |
|
|