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Home > General Chat > Standard Metro Turbo fuel pump - psi and lph ratings please!

mpe

36 Posts
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Folks,

I've been seaching high and low (internet, mostly), and can't find much in the way of reference to the actual outputs from a standard MG Metro Turbo fuel pump. Can anyone shed some light, other than to say that anything from 40-65psi will be okay?
Incidentally, two things:
1. Someone on this forum stated that a standard pump produced 36psi (or so). Why would this be the case - isn't it just 3.5 + 7 psi that would be needed for a standard engine?
2. My car has the standard 1/4" supply and return lines, so I imagine my choice of fuel pump may impact upon how well these cope. More pressure = more flow, but also more to send back to tank.

Thanks for any advice.
Matt


Miniwilliams

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As far as i can tell any fuel injection pump will do the job, you don't really need to know what the pump out put is, if you set what comes out of the reg at around 4 -5 psi. this should be ok.

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mpe

36 Posts
Member #: 4743
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Thanks. Problem is, I'll only know if the reg can reduce to what's required once I've bought and installed the pump. When you say "any injection pump", what pressure range are you talking? I doubt the reg could handle 100psi, for example....
Cheers
Matt


Sprocket

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Preston On The Brook

The differential fuel pressure an SU carb works at is ~4psi. What you have to consider is the boost pressure you will run as well. Gauge fuel pressure will be the sum of the boost pressure and the differential fuel pressure. So, 15psi boost and 4psi differential equates to 19psi fuel pressure you would see on a gauge.

The turbo pump is a fairly common type bosch unit and is used on several other cars. It's also used on fuel injected cars with fuel pressures of 45psi.

Flow rate Im not sure, but I think that its fine on anything but the most extreme power levels.

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


wil_h

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Betwix Harrogate and York

Yeah, BL would have just picked a pump off the shelf rather than specifing a special pump. Also, don't for get that the Metro pump was not run at 12V, mprelike 9V

From a regulator point of view 65psi is safe, but people have damaged tham at higher psis. However the diaphrams may have bben worn anyway.

Edited by wil_h on 15th Feb, 2009.

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On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


TurboDave16V
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I don't think the metro pump will do a typical EFI fuelling setup, especially a turbo one - I'm sure folks have tried - and failed.


On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


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Sprocket

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Preston On The Brook

I could well be wrong Dave. The package is almost identical to severl EFI pumps, but that doesnt mean its the same inside, of course *happy*

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


mpe

36 Posts
Member #: 4743
Member

Thanks to all; I'm happy to go and buy a pump now! Here in Aus, I can't tell the motor spares shop I want a metro turbo pump, so I have to tell them what pump I do want...


metroturbo

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North Yorkshire

The Bosch part number is 0 580 464 070, and a quick google search has thrown up 102 l/hour 94psi.

Tha same pump was used on the Maestro and Montego 2.0l EFi engine (without the ballast resistor), and a myriad of other cars, so it should be more than capable of anything you need it to do.


mpe

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Member #: 4743
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My googling seemed to bring up 130lph and 3 bar (44psi). Either way, it seems that this is the very same pump fitted to the Holden VL Commodore here in Aus, so easy to get. Cheers.


metroturbo

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Sorry about that, I noted the wrongs stats. It is indeed as you state.


Bat

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Bermingum

Hi,
Any injection pump that runs on a 3 bar system should do the job.
The pumps to steer clear of are the ones for the mechanical Fi systems which run 7 bar regulated.
Cheers,
Gavin :)

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Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

have a dig about on here,
there is a list of pump part no's and flow/ pressure graphs.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

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Billus89

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Herefordshire

Holy Thread revival!!!!
Looking to buy one of the Sytec injection pumps as it suits my needs with regards to threaded fittings.
My question is that I have a choice of two potentially suitable pumps, differing by their fuel delivery flow rates and maximum pressures. I obviously want to get the lowest flow rate and pressure so I am not making the regulator work overtime.
The suitable options are:

Pump 1 - max pressure of 2.3 bar - flow rate of 135 ltr/hr @ 2 bar

Pump 2 - max pressure of 6.5 bar - flow rate of 156 ltr/hr @ 3 bar.

The thread has differing views which is why I am after a more concise answer.

Many thanks
Billus89


slater

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2.3 bar one is plenty! Your not going to need 135lph or over 2bar


Brett

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Doncaster, South Yorkshire

a max pressure of 2.3 bar may be enough, but sounds kinda low tbh, most injection pumps can do well over 3bar,

and tbh id argue that a regulator is doing more work on boost than it is sat returning all the fuel you can send it at idle
135lph is enough for 350+ bhp with my rough calcs

i would pick pump 2 because of the same reason i would choose the mpi over spi tank
- i dont want to be limited by fuel pressure

Yes i moved to the darkside *happy*

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Billus89

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So Brett, your thoughts are that although pump 1 can supply 135 ltr/hr which we'll exceeds what I need power wise, you would choose pump 2 because of its higher pressure?
Thanks for your view btw both Brett and slater, as you can see conflicting views are why I don't yet want to part with any cash.

Billus89


Brett

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yes it can fuel for lets say 350hp, but the boost we would have to run to get to even 200hp will far out pressure what the pump can deliver

pump 1 can fuel for around 20psi boost BUT that is max pump pressure i would like a little head room at least anyway
if your not going to boost higher than 20psi max go with pump one

the usual advise given is go with an injection pump... most injection cars run 3 or 4 bar fuel pressure

Yes i moved to the darkside *happy*

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jakejakejake1

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Just be careful of over-pressuring the regulator, 6.5 bar is about 95psi, which is more than the standard regulator will be able to take I believe


Carlzilla

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Quarry Bonk

Pump one at 2.3 bar will produce say 30psi fuel pressure (actually 33 but leaving a little headroom) and then take away base fuel pressure as say 4psi, and the max boost that pump is capable of keeping up with is going to be around 26psi. The mpi pump is 3 bar and that's far more than an a series will ever need. Pump 1 will be more than capable of what you will probably throw at it.

Edited by Carlzilla on 2nd Jul, 2014.

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)


Brett

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Doncaster, South Yorkshire



On 2nd Jul, 2014 jakejakejake1 said:
Just be careful of over-pressuring the regulator, 6.5 bar is about 95psi, which is more than the standard regulator will be able to take I believe

Fuel pressure regulators don't take pressure as such they create it
And I'll admit on my first post I miss read 2.3bar for psi but what I put still stands I'm always cautious about using parts at the max rating

Edited by Brett on 2nd Jul, 2014.

Yes i moved to the darkside *happy*

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Carlzilla

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Quarry Bonk

Haha, but yeah it's best to underwork some parts, but obviously not by too much. I know what you mean Brett, best to always leave a bit of capacity to be on the safe side

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)


TurboDave16V
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SouthPark, Colorado

If you are concerned about excessive pressure/flow overcoming the regulator, all you need to do is put a restrictior at the entry to the regulator, such that the return line all the way back to the tank has a larger flowrate than the inlet to the regulator itself. That will prevent any issues or concerns, and is a good way of ensuring the regulator will work properly.

When I was running a walbro 255 with the Malpasi regulator, I had 5/16" supply and return, but had a 4mm ID orifice in the fitting jut before the regulator. I was able to easily suppress that 100+psi potential down to 1.5psi minimum; without the restrictor lowest it would go to was 7psi...

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY


Home > General Chat > Standard Metro Turbo fuel pump - psi and lph ratings please!
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