fuel pump install _ up or down

[69dodge383]

I am putting in a holley electric fuel pump blue series 110gph. I looked in the instructions and it doesn't say if it has to be mounted a cetain way. I wam goig to install it on the passenger side under the hood but am unsure if I can position it however I want or not...

Thanks

Doug

[tan top]

I think it has got to be mounted  , in vertical position  with the motor on top  

[Chargen69]

arent they better pushers than pullers?  why not put it back near the tank?

[tan top]

arent they better pushers than pullers?  why not put it back near the tank?

yeah closest to the tank as possible  , & ideally below the fuel level ,  electric best at pushing not pulling

[chargd72]

Pump goes by the tank.  The regulator can go under hood.

[Musicman]

There are electric pumps that are "designed" to pull from the tank (self priming), but a Holley ain't one of them. 

[tan top]

There are electric pumps that are "designed" to pull from the tank (self priming), but a Holley ain't one of them.  

 yeah that's true  solenoid type pumps from  delph , warbrough  Ac delco , airtex  carter , they make the same types , they pull / suck dry 3 feet or more  

[myk]

Hey that looks like what I'm running!  It's really loud though...

[tan top]

Hey that looks like what I'm running!  It's really loud though...

yeah they are loud , had one fitted to mine   , good for priming !!  offers little to no resistance to fuel flow when its off ,
what you want to do to quieten it down some  ,  two old sway bar bar link end rubber bushings & a length of rubber hose same diameter as the pump bracket attaching bolt ,   what ever your attaching the pump bracket to ,   first on the attaching bolt , slide on washer , then pump bracket  , then slide on a washer the size of bar end link bushing , then slide on bushing , length of rubber tubing that actually acts as a bushing for the bolt in the mounting hole that's been drilled etc , then on the  back slide on bushing then suitable washer  then spring washer then nut & tighten , wont make it silent , but will quieten it down a lot

[ACUDANUT]

Hey Tan...Pic's please

[tan top]

Hey Tan...Pic's please

 

yep will take some later ,    

actually I have not long put  the 25  year old AC delco made pump back on, as a tempory experiment , ( on going experiment with a metered return line too ))  where i.ve put it this time  ,  its difficult to show the mounting set up , & takes ages to unbolt     ,  will do a diagram too  

did have a carter 72gph too at one point  ,

[myk]

Hey that looks like what I'm running!  It's really loud though...

yeah they are loud , had one fitted to mine   , good for priming !!  offers little to no resistance to fuel flow when its off ,
what you want to do to quieten it down some  ,  two old sway bar bar link end rubber bushings & a length of rubber hose same diameter as the pump bracket attaching bolt ,   what ever your attaching the pump bracket to ,   first on the attaching bolt , slide on washer , then pump bracket  , then slide on a washer the size of bar end link bushing , then slide on bushing , length of rubber tubing that actually acts as a bushing for the bolt in the mounting hole that's been drilled etc , then on the  back slide on bushing then suitable washer  then spring washer then nut & tighten , wont make it silent , but will quieten it down a lot

So basically we're just trying to soak up the vibration from the pump?  That's a great idea!  Question: are these pumps supposed to run at a constant rate, or do they change flow based on the needs of the fuel system?  I can swear there are times that the pump isn't running because from time to time I can't hear it, or the noise it makes start to vary in pitch and frequency.  Keep in mind I'm just running off of the e-pump for all of the fuel needs...

[tan top]

Hey that looks like what I'm running!  It's really loud though...

yeah they are loud , had one fitted to mine   , good for priming !!  offers little to no resistance to fuel flow when its off ,
what you want to do to quieten it down some  ,  two old sway bar bar link end rubber bushings & a length of rubber hose same diameter as the pump bracket attaching bolt ,   what ever your attaching the pump bracket to ,   first on the attaching bolt , slide on washer , then pump bracket  , then slide on a washer the size of bar end link bushing , then slide on bushing , length of rubber tubing that actually acts as a bushing for the bolt in the mounting hole that's been drilled etc , then on the  back slide on bushing then suitable washer  then spring washer then nut & tighten , wont make it silent , but will quieten it down a lot

So basically we're just trying to soak up the vibration from the pump?  That's a great idea!  Question: are these pumps supposed to run at a constant rate, or do they change flow based on the needs of the fuel system?  I can swear there are times that the pump isn't running because from time to time I can't hear it, or the noise it makes start to vary in pitch and frequency.  Keep in mind I'm just running off of the e-pump for all of the fuel needs...

   i know they   supposed to be self regulating , with a psi od 5 to 9  others of 3.5 to 6.5  lots more in between
 there are many many different ones 6 & 12 volt too ,

 yes mine has a different  pitch when i switch it on , after the charger has been sitting for a few days or after a long run then park it with heat soak , think its cause fuel had drained evaporated out of the carb / line , run pump for a few seconds  , sound of pump changes  , assuming its cause its bypassing  inside  as fuel line is pressurised  

[tan top]

Hey Tan...Pic's please

   


the first picture / diagram ,  I made to show exactly what I was talking about , with  using old swaybar end link bushings  , that's how you want to mount all of these types of pumps  , well  using  some from of  rubber bushing deal  

  yes I've put  the solenoid electric fuel back on but temporary
 , reason being   I welded up the carter fuel pump bracket (( second picture )) holes above the right muffler hanger  , when I was doing the resto ,  knew I should of left them there & plug them   ,  so what your seeing is a temporary juryriged mounting of pump ,  hole already there   ,  just so I could run tests with a electric pump again with metered return line to tank , to solve vapour lock / heat soak &  poor idle quality  after  giving the motor a hiding  for a few miles   , then getting stuck in traffic  , cooler fuel  running constantly through carburetor , same deal with copper fuel lines  , they were / are  temporary   after the resto , cause did not know if factory bent steel lines with work with torque boxes & frame connectors   , will put  the OEM  back on one day , when I decide , what the permanent fuel set up is going to be ,  want to run FAST fuel injection one day ,  so not worth doing anything in steel just yet    .

[tan top]

   you sort of get the idea , but whats on mine is only a temporary fit  in the above & below pictures  ,  copy  diagram one  above

[ACUDANUT]

My Holley red pump is bolted on differently than this one...It's also a different pump too...Hey, as long as they work.

[tan top]

My Holley red pump is bolted on differently than this one...It's also a different pump too...Hey, as long as they work.

  does your redtop Holley  flow fuel when off  ? , say I wanted to plumb it in as a priming pump on a switch ,

 anyone else have or know  make of fuel pumps that flow when off ? like a solenoid pump does !!  

[ACUDANUT]

No, when I turn off the ignition switch, the pump is off too.

[tan top]

No, when I turn off the ignition switch, the pump is off too.

  thanks for the info  ,

thinking  the solenoid  type pumps are / must be  the only ones that don't offer any restriction when switched off ,  suppose I could order up a few different ones  , &  blow through them when off , to see if there is any others with out  restriction