13 replies to this topic

[smudger068]

Hi Guys n Girls
I am hoping someone can shed some light on the Facet Fuel pumps.
I have my micra build on kawasaki 600 carbs now I know the pressure of there fuel pumps is 1.5-2.5 PSI
Now I was going to use a facet solid state fuel pump which is around £35-£40.

Do I need a fuel pressure regulator?
Whats the difference between a cube shaped fuel pump to a cylindrical type?

Thank you

[minimk1]

Not sure what the difference is , I use the cube shaped one with a pressure regulator allowing me to set it from 0.5psi to 6.5psi

[smudger068]

Okay cool
I think I know now which one I need its a matter of do I or should I use a fuel pressure regulator

[geoff-d]

I have used the square type in the boot on 6 different mini's & I have had no problems all without regulator's. DO NOT use the cheap eBay copy lookalikes as they are rubbish/unreliable.

I also do not use the filter that screws into the pump as you can't check it. I use a inline plastice with paper filter inside so you can see if it's got anything in it that you don't want & easy toget replacement if needed.

Edited by geoff-d, 01 June 2014 - 08:13 AM.

[l_jonez]

I used the square facet pump on my bike carbs. You don't need a regulator. I still have the pump, keep meaning to put it on eBay.

[dklawson]

Before you buy the Facet (round or brick) ask about its pressure rating.  There are MANY different versions of both types in many different pressure ratings.  The brick type are cheaper and more compact, the cylindrical type are a bit more expensive, more refined, and typically include an internal mesh filter.  I have used both over the years without issue.

 

If the pump available to you exceeds what those bike carbs are designed for, fit a pressure regulator to the system and check the actual output from the regulator using a pressure gauge.  Do not expect any graduations or scale on the pressure regulator to be correct.  Also, avoid the round, pancake type pressure regulators with an adjusting knob.  

 

Do not buy the type of regulator shown in the picture linked below.  Though the design has been around for decades they are of notoriously poor quality and their internal diaphragm can fail catastrophically.

DO take Geoff's advice and fit a disposable, transparent filter before the pump in preference to the metal body filter typically supplied with the pump.  You really need to see when it is time to change a filter. 

[cal844]

I must admit, the regulator we bought was similar to the one above... Very very poor quality!!

[jpw1275]

If your going to use a regulator use a filter king!!!!

Cheers james

[smudger068]

Excellent thank you for all your help it is appreciated.

[MiniJosh92]

Someone please correct me but, I always thought one type was a "pusher" and the other a "sucker". Obviously which type you need depends where you mount it etc.

[KernowCooper]

Facet pumps are pushers and unlike the front mounted SU on Morris 1000s which had a far stronger vacuum.

[l_jonez]

Someone please correct me but, I always thought one type was a "pusher" and the other a "sucker". Obviously which type you need depends where you mount it etc.

Most electric pumps will be push, they can pull but are not designed for it.

Edited by l_jonez, 01 June 2014 - 10:17 PM.

[KernowCooper]

Does my previous post not explain it correctly? Facet are normally mounted at the rear, they do models with a stronger vacuum for front mounting, the small square and round type are normall rear mounted as they have restricted lift capacity.

[colinu]

And please remember safety... DO NOT wire an electric fuel pump directly into a switched 12V feed otherwise you run the risk of the pump still running after a crash with the potential of spewing fuel everywhere.
Ideally wire it in via an oil pressure switch (i.e. need to replace the existing one) just like this article explains... http://www.how-to-bu...-fuel-pump.html
And to be super safer wire in a inertia switch (like MPIs use) in the ground control line of the relay.