96 replies to this topic

[Mike (Cliffie)]

So, all is still OK with the pump and car is running swwetly. I have done a few full power runs and no issues. Will be remapped on 24th March so will know more then. This pump, as Vocky says, uses all the same pick up points as the original and sits in the original canister... Time and Spa will tell if there are any issues.

[Duncan VXR]

Should have mine in the post Thu and be fitting to Zac's car in a week or 2 with new tank - sure it will be fine DG

[siztenboots]

why are the SC cars running out of fuel flow rate , there are stage 5 turbo running 360+ bhp on standard pump , so why are the M62 SC cars hitting a problem?

[techieboy]

My pump is mechanically fcuked, that's why I need one. Whether that's down to age/mileage and/or the problem I had with a kinked fuel hose, I don't know.

[Mike (Cliffie)]

why are the SC cars running out of fuel flow rate , there are stage 5 turbo running 360+ bhp on standard pump , so why are the M62 SC cars hitting a problem?

We are not as a rule.

What is happening is the pumps are wearing out mostly due to blocked filters I would guess. My pump is 10 years old now and to ask it to now supply fuel for a further 100 BHP is maybe stretching it. I simply replaced before I had to.

Do the Tubbys have a different pump to the NA cars?

[Winstar]

why are the SC cars running out of fuel flow rate , there are stage 5 turbo running 360+ bhp on standard pump , so why are the M62 SC cars hitting a problem?

We are not as a rule.

What is happening is the pumps are wearing out mostly due to blocked filters I would guess. My pump is 10 years old now and to ask it to now supply fuel for a further 100 BHP is maybe stretching it. I simply replaced before I had to.

Do the Tubbys have a different pump to the NA cars?

could be but I doubt it, doesn't the NA run a fuel higher pressure than the turbo though so may have a different requirement?

[siztenboots]

why are the SC cars running out of fuel flow rate , there are stage 5 turbo running 360+ bhp on standard pump , so why are the M62 SC cars hitting a problem?

We are not as a rule.

What is happening is the pumps are wearing out mostly due to blocked filters I would guess. My pump is 10 years old now and to ask it to now supply fuel for a further 100 BHP is maybe stretching it. I simply replaced before I had to.

Do the Tubbys have a different pump to the NA cars?

could be but I doubt it, doesn't the NA run a fuel higher pressure than the turbo though so may have a different requirement?

z20let = 3.3bar

[NickB787]

Just ordered mine they are in this afternoon Thanks cliffie

[Nev]

Just to clarify some specs on this pump (for those of you who think they might exceed the pumps ability to supply fuel), I rang up Rob at Glencoe and got the following fuel pressure to rate of delivery figures: 1 Bar = 270 Ltrs/Hr 2 Bar = 255 Ltrs/Hr 3 Bar = 240 Ltrs/Hr 4 Bar = 216 Ltrs/Hr 5 Bar = 174 Ltrs/Hr 6 Bar = 150 Ltrs/Hr 7 Bar = 96 Ltrs/Hr As a useful comparison, the Bosch pump commonly known as the '044' pump (part No. 0 580 254 044), provides 330 litres per hour (supporting approx 730 bhp) at 5 bar of pressure. If you think that this pump might be struggling to provide enough fuel for your engine's needs, remember that you can reduce the FPR on the fuel rail to say 3.0 Bar and increase the size/capacity of the injectors. This is what I will most probably have to do, because this pump is on the edge of being able to supply enough fuel for 475 BHP (the max I envisiage my new engine ever making) for cars with a brake specific fuel consumption guestimated to be bewteen 0.6 to 0.75 Lbs/BHP/Hour.

Edited by Nev, 16 April 2010 - 12:48 PM.

[Exmantaa]

1 Bar = 270 Ltrs/Min
2 Bar = 255 Ltrs/Min
3 Bar = 240 Ltrs/Min
4 Bar = 216 Ltrs/Min
5 Bar = 174 Ltrs/Min
6 Bar = 150 Ltrs/Min
7 Bar = 96 Ltrs/Min

Ltrs per hour me think..

[siztenboots]

Bosch 0 580 254 044 Inline Fuel Pump Bosch 044 fuel pumps mount inline (out side of your gas tank), most commonly rear center under your car or truck. Each Bosch 044 inline fuel pump provides 300LPH of flow and operate at 72.5 PSI. Bosch 044 fuel pumps are comparable to the Walbro 255LPH high pressure inline fuel pumps which can both support vehicles for up to 600-700 horse power. Can be used in sequence with an intank Walbro or Bosch 040 fuel pump. Bosch 044 Fuel Pump Specs: Bosch Part Number: 0 580 254 044 Minimum Current: 12 Volts Operating Pressure: 72.5 PSI (5 Bar) Minimum Flow @ Outlet: 80 GPH (300 LPH) Fuel Pump Location: In-Line High Temperature Reduction: 8 GPH (30 LPH) Weight: 1030 Grams (2.27 Pounds) Fuel Pump Connections: Inlet: M18 x 1.5 Outlet: M12 x 1.5 Electrical: Positive M6 / Negative M5

[siztenboots]

wouldn't the Bosch 040 be more relevant?

[Duncan VXR]

My 044 Bosch pump makes more noise than the oe one I am revising the location / replacing fitments etc on my fuel system soon (intend to replace the filter sock on the in tank oe pump)it all works fine but looking to get a few things looking more oe and as per usual go overkill on required parts I also have an adjustable fuel reg (Liam MMG, stocks them)which I will also fit. Nev I would be thinking more on the lines of the 044 for your setup. DG

[Nev]

1 Bar = 270 Ltrs/Min
2 Bar = 255 Ltrs/Min
3 Bar = 240 Ltrs/Min
4 Bar = 216 Ltrs/Min
5 Bar = 174 Ltrs/Min
6 Bar = 150 Ltrs/Min
7 Bar = 96 Ltrs/Min

Ltrs per hour me think..

Thx Exmanta, I have now corrected my mistake.

By the way guys, you need to be careful about relying on publicised supported BHP figures based on delivery rates. This is because there is a big difference in how much fuel an N/A car needs compared to a turbocharged car, and usually the adverts don't specify which they are claiming for. Usually a high pressure turbo-charged car will need approx 25% to 50% more fuel than an NA car to make the same power.

Edited by Nev, 16 April 2010 - 12:56 PM.

[Nev]

Does anyone know the specs on the OEM fuel pump please ?

[techieboy]

Does anyone know the specs on the OEM fuel pump please ?

No, you'll have to ask Jon at Courtenay's about it. He managed to extract the specs from a contact at Lotus when he was trying to find a directly swappable upgrade for us. Possible that Rob at Glencoe also has the information as it went back and forth a few times. Alex at ProAlloy may also know it as they were involved for a long time.

[Nev]

Oooh, and the other thing that I forgot to mention (which may not be obvious), is that when you are running the turbo (or SCer) at full bost (lets say 2 bar for instance) you need to add this to the bar pressure that the dynamic FPR will adjust to. ie A FPR resisting pressure at 3 bar at idle, will dynamically change resistance to 5 bar when the turbo is providing 2 bar of boost. Thus at 5 bar of pressure, you can see this pump can't really provide all that much fuel...

Edited by Nev, 16 April 2010 - 04:58 PM.