the best quiet fuel pump...

[Alphabettispaghetti]

It's worth looking at the specs about pressure, mounting etc:

https://www.facet-purolator.com/

Mine are mounted vertically on rubber near the tank. Fit a filter before the pump - I have had a pump fail due to blockage of the inbuilt filter.

Thanks Rob

General consensus seems to be to fit a good quality filter before.

 

[Rob Gaskin]

Incidentally I have bought a second pump for my blue car to be mounted alongside the first and wired/plumbed 'ready to go'.

 

[Alphabettispaghetti]

I need to see if I can find a correct(ish) pump bracket.

 

[Paul_S]

Yep, I like that bracket.

When I drop my tank I'll see what I can do to make something similar. I particularly like the way it protects the base of the pump. Mine is well tucked up underneath but doesn't have any protection around it.

 

[Alphabettispaghetti]

I've got a facet gold top mounted in the original bracket but was noisy until i mounted it on some rubber cotton reels,

View attachment 39509

how much space do you have there with the car built?

I like the idea of something like this to mount the pump and filter onto

https://www.motorsport-tools.com/mo...uel-pump-mounting-bracket-vertical-black.html

 

[toopy]

So whats the deal with the Cube and Posiflo pumps, they appear just as good and smaller, so why does no one seem to be using them?

 

[Alphabettispaghetti]

So whats the deal with the Cube and Posiflo pumps, they appear just as good and smaller, so why does no one seem to be using them?

View attachment 39518View attachment 39519

im guessing because they’re solid state?

 

[Paul_S]

So whats the deal with the Cube and Posiflo pumps, they appear just as good and smaller, so why does no one seem to be using them?

View attachment 39518View attachment 39519

Going by this there are varying flow rates and pressures for each --> https://www.merlinmotorsport.co.uk/...l-pumps-for-vehicles-running-carburettors-282

The square ones don't have as much 'lift' as the cylinder ones and need to be mounted near the tank.
The Posi-flow ones a new version of the square ones and are quieter and have a good 'lift' as well as a check valve to prevent fuel draining back.
The cylinder ones have a replaceable filter and magnet to collect particles. You also have a much wider range of unions and can be mounted anywhere. The top spec one has the highest flow rate of all.

Here's a more readable guide for the PSI and flow rates --> https://www.flexolite.co.uk/images/ul/Fuel systems components.pdf

 

[toopy]

im guessing because they’re solid state?

and that's a disadvantage because?

 

[toopy]

Going by this there are varying flow rates and pressures for each --> https://www.merlinmotorsport.co.uk/...l-pumps-for-vehicles-running-carburettors-282

The square ones don't have as much 'lift' as the cylinder ones and need to be mounted near the tank.
The Posi-flow ones a new version of the square ones and are quieter and have a good 'lift' as well as a check valve to prevent fuel draining back.
The cylinder ones have a replaceable filter and magnet to collect particles. You also have a much wider range of unions and can be mounted anywhere. The top spec one has the highest flow rate of all.

Here's a more readable guide for the PSI and flow rates --> https://www.flexolite.co.uk/images/ul/Fuel systems components.pdf

So apart from the magnet and inbuilt filter aspect, why are the solid state ones not more popular? most people have pumps by the tank anyway and a filter is recommended regardless, am i missing something obvious, i don't get it

 

[Albrecht]

I need to see if I can find a correct(ish) pump bracket.

You can make one! Piece of flat sheet and a few bends in the vice, drill a few holes, paint black, voila. It's really only a splash shield.

 

[Rob Gaskin]

My Samuri has the Cube one. If you look at the specs it's not as powerful - but mine appears to be up to the job (triple 40s).

 

[Paul_S]

Maybe because they were the first ones available and all the pipework is already set up for them? People did what I did and just swapped them out like for like?

Also, the red top competition is good for 200+ BHP according to my second link and none of the others are. I think the '<' and '>' are mixed up on that page, BTW.

 

[atomman]

So whats the deal with the Cube and Posiflo pumps, they appear just as good and smaller, so why does no one seem to be using them?

View attachment 39518View attachment 39519

One of these wouldn't keep up with my webers on the dyno, so swapped it out for the gold top as it has more flow per hour

 

[toopy]

So it's not that they are any less reliable then, just what people are used to and tend to swap like for like with the cylindrical ones.

I want to move my pump from the engine bay, as it looks a bit messy with the hoses, but i think I'll swap to one of the smaller versions for ease of installation at the rear

 

[Alphabettispaghetti]

You can make one! Piece of flat sheet and a few bends in the vice, drill a few holes, paint black, voila. It's really only a splash shield.

i was trying to slow down procrastination on my part.

I’ll now make one and hold you personally responsible!

red top pump ordered. Thanks all.

ps: the red top pumps are also labeled gold(same as yours Gary). Makes things clear doesn’t it.

 

[Pete]

Personally I always loved the fuel pump hum on my 280ZX when the ignition went on. In fact at night I think the procedure was switch the lights on, ignition on, watch the dash light up listen to the pump hum, wait, engage starter.........

 

[Rob Gaskin]

i was trying to slow down procrastination on my part.

I’ll now make one and hold you personally responsible!

red top pump ordered. Thanks all.

ps: the red top pumps are also labeled gold(same as yours Gary). Makes things clear doesn’t it.

So why a Red Top?

 

[Alphabettispaghetti]

So why a Red Top?

lots of people had them fitted, I rang 2 motorsport resellers and thats what they said would suit a triple carb setup. Some internal differences to another similar they sell.

 

[AliK]

They do come up on eBay all the time, ala ...

https://www.ebay.co.uk/itm/224044536020

But for my money I would go RHDJPN and new ...


https://www.rhdjapan.com/nismo-high-flow-volume-fuel-pump-general-purpose-1-3l.html

Or at least that is what I was considering when I was wondering if my mech pump would be man enough for the more powerful engine. Also I was worried that it may not have internals designed to handle ethanol.

Question is, if you use this sort of pump, do you need a pressure regulator? I don’t think Nissan used one on their elec + mech double pump setup, did they? I believe that the Kiki is already low pressure and doesn’t overwhelm carbs but happy to be put in my place if wrong.