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Jordan

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1913 Posts
Member #: 1392
Pointless Post Whore

Liverpool, North west

28th Jun, 2008 at 09:14:28pm

Been having a bit of trouble with the fuelling on my N/A motor.
it goes through all rev range nicely.

Problem, when the bloke was checking the mixture for 4krpm he held it there for about 20 secs at 60ishmph running fine. Suddenly started backfiring and we think it was down to fuel starvation.

Checked the float valve and ive got movement in that and no obstructions to be seen.

Ive got a facet block type Std performance fuel pump that "should" be able to fuel the engine adequatly. However im running it through 10mm bore fuel pipe.

Im thinking there is a pressure drop somewhere along the line in which case i may need a higher pressure pump.What do you think?

Ta very much

Back once again like a renegade master

wil_h

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9258 Posts
Member #: 123
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Betwix Harrogate and York

28th Jun, 2008 at 09:43:58pm

Sounds like the pump can make the pressure but not the volume required.

Test the pump, you need around 1 litre per min to be safe.

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.


Nic

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9327 Posts
Member #: 59
First mini turbo to get in the 12's & site perv

Herefordshire

28th Jun, 2008 at 11:39:19pm

Its not those blasted tight valve guides again is it?

Bat

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Bermingum

29th Jun, 2008 at 08:35:44am

Hi,
Is there a filter in the Facet pump?
Chers,
Gavin :)

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Carl

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2924 Posts
Member #: 95
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liverpool-on-sea

29th Jun, 2008 at 09:23:36am

go get a few meters or normal size fuel pipe and bypass your 10mm fuel pipe and see if that helps.

no longer a series, but still 1.3 turbo.

On 28th Nov, 2008 Sprocket said:
Oh now that is a long shaft you have Carl.
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