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 673 Posts Member #: 1395 Post Whore chepstow |
15th Oct, 2012 at 07:41:54pm
http://www.ebay.co.uk/itm/mini-metro-hif44...6ccdfe86&_uhb=1 |
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 171 Posts Member #: 9928 Advanced Member Hartley, Kent |
15th Oct, 2012 at 08:16:28pm
That can't be right surely? No restrictor ring or anything? Low boosting for now. |
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 9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
15th Oct, 2012 at 10:28:36pm
as long as the fuel pressure regulator and float bowl are correctly pressurised above manifold pressure there should not be not problem, i would assume the needle would need to be a fair amount different to standard Yes i moved to the darkside |
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 774 Posts Member #: 6724 Post Whore Wootton Bassett |
16th Oct, 2012 at 03:20:57am
well apparently he ran a relay with it. |
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
16th Oct, 2012 at 06:43:56am
On 15th Oct, 2012 Brett said:
as long as the fuel pressure regulator and float bowl are correctly pressurised above manifold pressure there should not be not problem, i would assume the needle would need to be a fair amount different to standard 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. |
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9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
16th Oct, 2012 at 09:01:41am
On 16th Oct, 2012 wil_h said:
Yes, but the fuel pressure regulator has no bearing on the pressure of the float bowl. yes i understand that but the float bowl needs to be atleast the same pressure as the boost, you can run perfectly fine with no restrictor but the needle needs to be sooo thin by the time your pushing 10psi boost you cant fuel any more. That 1-2 psi drop from plenum to carb that restrictor creates is not worth the hassle removing it would create eg my needle for my non restrictor plenum ( i could only fuel for 10psi @12afr) causes a complete rich cut out at 20psi boost on a normal restricted plenum it was so rich by 20psi boost it wouldnt pull beyond it and il talking 3-3.5krpm there are other ways to replicate the restrictor that have been discussed on here i feel in some detail eg the pilot tube and you can use the pressure drop across the whole intake side (intercooler and piping creates enough drop in pressure to upset my boost controller) Edited by Brett on 16th Oct, 2012. Yes i moved to the darkside |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
16th Oct, 2012 at 09:09:07am
On 16th Oct, 2012 Brett said:
On 16th Oct, 2012 wil_h said:
Yes, but the fuel pressure regulator has no bearing on the pressure of the float bowl. yes i understand that but the float bowl needs to be atleast the same pressure as the boost, you can run perfectly fine with no restrictor but the needle needs to be sooo thin by the time your pushing 10psi boost you cant fuel any more. That 1-2 psi drop from plenum to carb that restrictor creates is not worth the hassle removing it would create eg my needle for my non restrictor plenum ( i could only fuel for 10psi @12afr) causes a complete rich cut out at 20psi boost on a normal restricted plenum it was so rich by 20psi boost it wouldnt pull beyond it and il talking 3-3.5krpm there are other ways to replicate the restrictor that have been discussed on here i feel in some detail eg the pilot tube and you can use the pressure drop across the whole intake side (intercooler and piping creates enough drop in pressure to upset my boost controller) 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. |
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9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
16th Oct, 2012 at 04:00:54pm
yes i agree, now i have looked closer at it, it doesnt have the holes to pressurise underneath the main piston either, the holes on the dodgy flange look to be in the wrong place
On 16th Oct, 2012 wil_h said:
Yes you are correct about the restrictor. If you retain the plenum your float bowl will at least see boost pressure. but the thing linked to had no means of even pressurising the float bowl and as such will not run any boost. On 16th Oct, 2012 Brett said: On 16th Oct, 2012 wil_h said:
Yes, but the fuel pressure regulator has no bearing on the pressure of the float bowl. yes i understand that but the float bowl needs to be atleast the same pressure as the boost, you can run perfectly fine with no restrictor but the needle needs to be sooo thin by the time your pushing 10psi boost you cant fuel any more. That 1-2 psi drop from plenum to carb that restrictor creates is not worth the hassle removing it would create eg my needle for my non restrictor plenum ( i could only fuel for 10psi @12afr) causes a complete rich cut out at 20psi boost on a normal restricted plenum it was so rich by 20psi boost it wouldnt pull beyond it and il talking 3-3.5krpm there are other ways to replicate the restrictor that have been discussed on here i feel in some detail eg the pilot tube and you can use the pressure drop across the whole intake side (intercooler and piping creates enough drop in pressure to upset my boost controller) Yes i moved to the darkside |
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