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RED850

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243 Posts
Member #: 89
Senior Member

Sydney Australia

31st Jul, 2006 at 03:35:38am

hey all,

I get a funny feeling that the engine is running out of fuel/stavation when at full revs around 7000 to 7500 in 3rd gear at about 15psi it seems to slow down all of a sudden and but in 2nd gear same revs it keeps pulling to 8k.

fuel pressure at idel is set to 4psi and the pump can put out over 30psi but maybe the engine is using up the fuel in the float and the the flow is being restricted by the needle and seat causing stavation.

any one heard of this before?

thanks Grant

179hp on 12psi 1293cc of pure A series
14.0et @101 mph


wil_h

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Betwix Harrogate and York

31st Jul, 2006 at 08:03:08am

My car used to do it, but it was because my pump wouldn't pump the volume of fuel needed.

My pump was pumping around 0.5 litres/minute, it really needs over 1 litre/minute.

wil

Fastest 998 mini in the world? 13.05 1/4 mile 106mph



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.


turbochargedstu

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gateshead

31st Jul, 2006 at 12:52:16pm

yep! mine was running out of fuel quicker than i could supply it to the carb at york. i got a float bowl extention and a modified needle valve from avonbar. seemed to sort it.

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

metroturbo

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North Yorkshire

12th Aug, 2006 at 09:56:12pm

I know of a Maestro turbo that has run at 20 psi with the standard SU HIF float bowl, needle valve, and fuel pump. It has no fuelling problems. Are you sure that it isn't a case of your pump not being up to the job, rather than the flow being restricted?

turbochargedstu

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gateshead

13th Aug, 2006 at 06:45:21pm

its a new facet red top. i have a filter king regulator in line too, which is now just a filter!!!!

will find out about any other fuel issues on the way to mitp on friday morning!!!! gulp!!

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

metroturbo

806 Posts
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North Yorkshire

18th Aug, 2006 at 10:57:05pm

The facet red top runs at a maximum 7psi, IIRC. You need fuel pressure to be around 4 psi above boost, and I suspect that the pump isn't able to do this for you. The boost pressure in the float bowl will over come the fuel pressure, and the float bowl will begin to empty until you lift off or change gear.

The Bosch fuel pump that was fitted to the Metro, Maestro, and Montego is capable of over 40psi. It was fitted to all sorts of fuel injected cars, and it is still manufactured by Bosch.

Edited by metroturbo on 18th Aug, 2006.


turbodave16v
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SouthPark, Colorado

18th Aug, 2006 at 11:13:22pm

Stu's is a suckthrough - so different rules apply....

On 17th Nov, 2014 Tom Fenton said:
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