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193 Posts Member #: 437 Advanced Member Sunny Blackpool |
1st Jan, 2007 at 12:58:14pm
Hi
Edited by Metro Turbo on 1st Jan, 2007. 89' Metro Turbo
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 9326 Posts Member #: 59 First mini turbo to get in the 12's & site perv Herefordshire |
1st Jan, 2007 at 01:02:06pm
these have been discussed before, i think it was decided that there was no reason to have it |
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193 Posts Member #: 437 Advanced Member Sunny Blackpool |
1st Jan, 2007 at 01:26:38pm
I did a search, but couldn't find a thread covering it...
89' Metro Turbo
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 2924 Posts Member #: 95 Post Whore liverpool-on-sea |
1st Jan, 2007 at 01:32:10pm
i use one of there modified carb needles and springs. done the job for me. 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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9326 Posts Member #: 59 First mini turbo to get in the 12's & site perv Herefordshire |
1st Jan, 2007 at 02:18:12pm
On 1st of Jan, 2007 at 01:26pm Metro Turbo said:
I did a search, but couldn't find a thread covering it... Tim i couldnt find it either |
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193 Posts Member #: 437 Advanced Member Sunny Blackpool |
1st Jan, 2007 at 03:19:25pm
On 1st of Jan, 2007 at 01:32pm Carl said:
i use one of there modified carb needles and springs. done the job for me. I too currently use the high boost spring, but this is a different part of the carb. Avonba describe it as; Modified Needle Valve: This part allows more fuel to enter the float chamber. A must for anyone running 15psi or more. As used in the metro challenge. https://www.speedgenie.co.uk/avonbar/Images/nvalveweb.jpg Tim 89' Metro Turbo
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2924 Posts Member #: 95 Post Whore liverpool-on-sea |
1st Jan, 2007 at 03:34:11pm
oh i see, no ive not got one of them. have you got a problem with fueling? 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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Forum Mod 10980 Posts Member #: 17 ***16*** SouthPark, Colorado |
1st Jan, 2007 at 03:38:02pm
I've not got one either... 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 |
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193 Posts Member #: 437 Advanced Member Sunny Blackpool |
1st Jan, 2007 at 03:38:32pm
No this is purely something i was looking at fitting to help the increased fuelling when I up the boost and throw more fuel down its neck...
89' Metro Turbo
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2924 Posts Member #: 95 Post Whore liverpool-on-sea |
1st Jan, 2007 at 03:53:45pm
you only need to up the fueling IF it needs it and this wont be known until you carry out the future mods and you get it tuned. 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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3594 Posts Member #: 655 Post Whore Northern Ireland |
1st Jan, 2007 at 04:54:08pm
I used one of the float bowl extensions....and they are a strange thing.
9.85 @ 145mph
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9326 Posts Member #: 59 First mini turbo to get in the 12's & site perv Herefordshire |
1st Jan, 2007 at 05:05:19pm
surely theyre only useful if your suffering with a poor fuel pump that cant keep up with filling the fuel bowl |
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 2514 Posts Member #: 1217 I like nice quiet girly Minis Cheltenham, Gloucestershire |
1st Jan, 2007 at 06:16:54pm
At any given pressure, for any given orifice size, there is a particular flow rate (same principal as the bleed valves). If that flow isn't enough it doesn't mater how hard your pump tries the engine will drink it faster than the pump can fill it. In that case there are only two options, larger flow area (bigger hole) or increasing the pressure.
Every day is a school day ...........
On 27th of Sep, 2007 at 12:45pm Jimster said:
why do you you think I got a girlfriend with small hands? |
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3594 Posts Member #: 655 Post Whore Northern Ireland |
1st Jan, 2007 at 06:35:59pm
On 1st of Jan, 2007 at 05:05pm Nic said:
surely theyre only useful if your suffering with a poor fuel pump that cant keep up with filling the fuel bowl Ive no idea what my AFR's where. But on a sustained high speed 4th gear run ( 1 2, 3, 4 ), perhaps as long as 1 minute when embarassing Cossies etc, I did run out of fuel at times.. I tried a larger needle valve, and upping the fuel pressure as much as I could. All of these did help. But for that extra peace of mind, I also opted for the larger fuel bowl. ( and a big hammer to modify the bulkhead again ) Its so much funnier when you just keep pulling and pulling away, and there is nothing they can do about it  Before those mods were done, I could only do short balsts up to high speeds, then starvation kicked in and had to slow sooner than I'd like.
After all the fuel system mods, I could then hold my car as long as I wanted in 4th, and never experienced any problems. I think the large needle valve I ended up with, would probably be sufficient though. I just wanted belts and braces approach. 9.85 @ 145mph
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2514 Posts Member #: 1217 I like nice quiet girly Minis Cheltenham, Gloucestershire |
1st Jan, 2007 at 06:59:24pm
Interesting .... obviously I have never been trying hard enough!!!
Every day is a school day ...........
On 27th of Sep, 2007 at 12:45pm Jimster said:
why do you you think I got a girlfriend with small hands? |
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193 Posts Member #: 437 Advanced Member Sunny Blackpool |
1st Jan, 2007 at 07:31:34pm
89' Metro Turbo
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5795 Posts Member #: 80 AFRacing LTD Newbury, Berks |
1st Jan, 2007 at 09:08:35pm
I had no problems at the top end with 170 bananananas on a std carb with modified needle.
AlexF |
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2924 Posts Member #: 95 Post Whore liverpool-on-sea |
1st Jan, 2007 at 09:13:49pm
every engine seems to be different in the fueling department for some reason 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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193 Posts Member #: 437 Advanced Member Sunny Blackpool |
1st Jan, 2007 at 10:05:39pm
On 1st of Jan, 2007 at 09:08pm AlexF2003 said:
I had no problems at the top end with 170 bananananas on a std carb with modified needle. Alex Strange... Ah well, i can only say we tried it on the rollers, but we couldn't get any more out of it with the standard pump and modified needle, 17psi was the max. tim 89' Metro Turbo
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5795 Posts Member #: 80 AFRacing LTD Newbury, Berks |
1st Jan, 2007 at 10:20:26pm
Was the carb rebuilt including the choke etc?
AlexF |
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193 Posts Member #: 437 Advanced Member Sunny Blackpool |
1st Jan, 2007 at 10:30:28pm
Yep its had a full rebuild. RR operator said more fuel pressure and modifying the jet was the next step to get the boost up further.
89' Metro Turbo
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5795 Posts Member #: 80 AFRacing LTD Newbury, Berks |
1st Jan, 2007 at 10:37:46pm
hmmm more fuel pressue altering the fueling - using a carb?!
AlexF |
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9326 Posts Member #: 59 First mini turbo to get in the 12's & site perv Herefordshire |
1st Jan, 2007 at 10:45:11pm
i dont know what everyone else is using, but im running a cavalier sri pump |
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 830 Posts Member #: 908 Post Whore gateshead |
1st Jan, 2007 at 10:51:52pm
i used the float extension and modified needle valve. it sorted my fuelling issue from york out. i was running out of fuel halfway down the strip. can gun it all day now! balls to the blower!!!
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193 Posts Member #: 437 Advanced Member Sunny Blackpool |
1st Jan, 2007 at 11:29:17pm
On 1st of Jan, 2007 at 10:45pm Nic said:
i dont know what everyone else is using, but im running a cavalier sri pump I didn't realise people were running different pumps, the cav sri pump sounds like a good option. Tim 89' Metro Turbo
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