electric fuel pumps

[Braden]

hey guys, its time to change my fuel pump, its been in the single digits here in ky and i went to start the ole 620 yesterday and no fuel!!! i blew 60 psi of air through the lines to clear any gelling or icing and hooked them all back up, i left the hose to the carb loose to see if i was getting fuel, NOTHING, i then went and got a heat gun and heated the fuel pump and primed it trying to get it going again, after much struggle and still getting no fuel i found a nice size rubber mallett!!! i tapped on the fuel pump for about a minute then cranked her over one last time, a filthy squirt of orange colored (im assuming rusty) fuel pours into the carb and she fires right up!!! i just cleaned, painted, and reinstalled my fuel tank so i know it wasnt dirt or rust from there, the fuel filter is good as well, so it had to be from the pump

 

i am thinking of switching over to this

 

http://go.mrgasket.com/ProductDetails.aspx?brandId=1&modelNumber=12S&productID=10573025&majID=225&minID=2255&selection=7&minselection=1

 

what electric fuel pumps have you guys used??? and if any of you used the mr gasket pump was it worth a count??? i also need a block off plate for the mechanical fuel pump, unless you guys reccomend using the electric pump as a booster for a new mechanical pump

[Skib]

not sure what PSI your carbie likes but you might want an adjustable FPR with that or any other electric pump.

 

 

My Z ran a Toyota Supra turbo pump with the stock 280ZX turbo FPR

[Braden]

not sure what PSI your carbie likes but you might want an adjustable FPR with that or any other electric pump.

 

 

My Z ran a Toyota Supra turbo pump with the stock 280ZX turbo FPR

that pump is designed for carbs only, it runs 4-7 psi, wouldnt the carb needle valve be able to hold back 4-7 psi? i beleive they make a pump with higher volume but less pressure like 3 to 5 psi, the question is how many pounds does a stock mechanical pump push, i will be running mikunis sometime this year

[Braden]

http://www.mr-gasket.com/pdf/12S_42S.pdf

 

doesnt call for a regulator, it says run it straight to the carb, what do you guys think?

[Skib]

that pump is designed for carbs only, it runs 4-7 psi, wouldnt the carb needle valve be able to hold back 4-7 psi? i beleive they make a pump with higher volume but less pressure like 3 to 5 psi, the question is how many pounds does a stock mechanical pump push, i will be running mikunis sometime this year

 

 

It just depends on what your carb should run at, if it can run at 7lbs its no problem and you dont need a regulator. It should be good tho.

[Skib]

http://www.mr-gasket.com/pdf/12S_42S.pdf

 

doesnt call for a regulator, it says run it straight to the carb, what do you guys think?

 

I think it should be fine

[Braden]

thanks skib, i will look into it more tonight while im at work, i still may go with a mechanical pump if i can get the beck arnley original style pump

[78kingcab]

i just did electric fuel pump swap and asked tons of psi questions...i pretty much got told 3-4 psi is all i needed.....and the factory pump only puts that out and they have proven them selfs...well i got the duel carbs on the 510 and was told to use 3-4 psi ..well i did what everyone told me went with 3.5 and car runs great nice to have that fuel right there after sitting for 3 months....you will like the elctric even though most people like that stock pump......i would say 3-4 is the spot

[hang_510]

i have something similiar...

 

installed near the tank (wagon), so i didnt add a regulator. ran a DGV perfect. :D

also use 2 stock filters, pre and post pump.

[Braden]

the two filters sounds like a must, what i wanna know is how does the electric fuel pump pressure vary? why does it put out 4 to 7 psi??? why isnt it constant?

[hang_510]

length of line/diameter/voltage... all affect actual output

[J.C_620]

i run a fuel pump like that one i mounted it close to the tank were the factory electric puum was located. i bought a f.p.r but didnt use it. my weber 34/34 requires about 2-4 psi or something like that and the pump pushes 4-7. i have not had any problem with flooding of the float bowl. if you have a fuel return line you should not have any trouble useing that pumpif you experience float bowl flooding just open the return line up just a little bit. mr G does not recomend useing a f.p.r with that pump because it will restrict it and cause it to run "hot" and the end result is premature failure