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 8604 Posts Member #: 573 Formerly Axel Podland |
21st Jan, 2007 at 01:34:34pm
Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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 455 Posts Member #: 953 Senior Member London |
21st Jan, 2007 at 03:17:32pm
something to do with the brake's maybe ????????
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119 Posts Member #: 772 Advanced Member new york |
21st Jan, 2007 at 03:25:46pm
fuel rail |
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  4436 Posts Member #: 164 The Stig.. Newport Pagnell |
21st Jan, 2007 at 03:28:15pm
yep, fuel rail.... On 21st Jan, 2011 fastcarl said:
therefore acheiving two things , a sore knob and a beer bellyl |
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715 Posts Member #: 1381 Post Whore Doncaster, South Yorkshire |
21st Jan, 2007 at 03:32:31pm
Haven't a clue really but it looks like some sort of fuel switching/ mixing device.
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 6549 Posts Member #: 1149 #1 Basshunter Fan Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes! |
21st Jan, 2007 at 03:37:32pm
Definatley a Fuel Rail! Those in the middle are injectors! Edited by MikeRace on 21st Jan, 2007. 1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.
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 549 Posts Member #: 1347 Post Whore Croydon (South London) |
21st Jan, 2007 at 03:41:28pm
But whats the bottom bar for? Mxing something else with the fuel? possibly to make a larger explosion??? |
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715 Posts Member #: 1381 Post Whore Doncaster, South Yorkshire |
21st Jan, 2007 at 03:50:52pm
If they are injectors I can see no point squirting them into a small diameter tube. They may be just solenoid controlled on/off valves, this would make more sense.
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Site Admin  15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
21st Jan, 2007 at 04:10:23pm
Injector flow test rig?
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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8604 Posts Member #: 573 Formerly Axel Podland |
21st Jan, 2007 at 04:13:52pm
A clue:
Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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 12307 Posts Member #: 565 Carlos Fandango Burnham-on-Crouch, Essex |
21st Jan, 2007 at 04:14:24pm
part of a metered fuel supply for an su? On 28th Aug, 2011 Kean said:
At the risk of being sigged... Joe, do you have a photo of your tool? http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1 https://joe1977.imgbb.com/ |
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3596 Posts Member #: 655 Post Whore Northern Ireland |
21st Jan, 2007 at 05:51:29pm
Unless you were to run the float bowl nearly dry, I cant see how having a metered supply feeding the float bowl, could possibly be of any benefit.
9.85 @ 145mph
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8604 Posts Member #: 573 Formerly Axel Podland |
21st Jan, 2007 at 06:23:35pm
On 21st of Jan, 2007 at 05:51pm stevieturbo said:
Unless you were to run the float bowl nearly dry, I cant see how having a metered supply feeding the float bowl, could possibly be of any benefit. the float bowl is basically a stagnant supply of fuel for the jet to draw from.Raising or lowering the level of fuel in there, shouldnt affect the amount of fuel delivered, until of course, the fuel level is too low. Why not just suppplement the SU, by firing an injector at its mouth ? Or does that also cause complications ? The mixture is extremely sensitive to the level in the float bowl. I've got my wideband fitted and working. A half turn of the mixture screw will alter the mixture by about 1 point. That alters the distance between the top of the jet and the level in the bowl by less than a millimetre. The flow through the jet is dependant of the differential pressure between the pressure in the float bowl and the depression caused by the velocity of the air over the bridge. The lower the float bowl level, the lower the flow of fuel. If you supply the carb with the amount of fuel it needs to achieve a specific air/fuel ratio, the float bowl level will reach a point of equilibrium so that what goes in, goes out through the jet. The only problem, as I see it, is what happens during transient conditions. Will the system react quick enough for a rapid opening of the throttle? The piston in the carb is damped by the plunger and spring to create the affect of acceleration enrichment. This will still work but the level in the float bowl will drop until the flow goes up to match. Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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 9327 Posts Member #: 59 First mini turbo to get in the 12's & site perv Herefordshire |
21st Jan, 2007 at 06:32:31pm
is it some kind of drug parafanalia? |
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 2909 Posts Member #: 83 Post Whore Glasgow, Scotland |
21st Jan, 2007 at 07:55:16pm
I have no idea whether itll work or not so wont comment on that, all i will say is prop's for giving it a shot! If all it costs you is your time then its rude not too :) turbo 16v k-series 11.9@118.9 :)
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2909 Posts Member #: 83 Post Whore Glasgow, Scotland |
21st Jan, 2007 at 07:56:15pm
p.s. could you do me a favour, if theres any part number son that regulator, could you tell me them please. want to see if its the same as my regulator turbo 16v k-series 11.9@118.9 :)
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3596 Posts Member #: 655 Post Whore Northern Ireland |
21st Jan, 2007 at 08:55:59pm
On 21st of Jan, 2007 at 06:23pm Axel said:
The mixture is extremely sensitive to the level in the float bowl. I've got my wideband fitted and working. A half turn of the mixture screw will alter the mixture by about 1 point. That alters the distance between the top of the jet and the level in the bowl by less than a millimetre. Thats because dropping the jet, places it at a different section of the needle. Not becuase if the height of fuel in the bowl. Dont forget, thats how an SU works. Fuel is metered by the jet/needle orifice size. Fuel level in float bowl has negligable effect. Think about a painters airbrush kit...Does paint flow reduce, as the level of paint drops in its reservoir ? It would make for very tricky work if it did. The flow through the jet is dependant of the differential pressure between the pressure in the float bowl and the depression caused by the velocity of the air over the bridge. The lower the float bowl level, the lower the flow of fuel. Unless you can increas or decrease AIR pressure within the float bowl, the pressure differential between jet, and bowl wil remain the same, regardless of float bowl level. As I said, the fuel in the float bowl is essentially stagnant. When on boost, turn your fuel pump off, and see if the car runs any different...until of course the bowl is empty. I know mine didnt. The fuel inside the bowl is NOT under any pressure, other than that of the boosted air around it. If there was any actual pressure, fuel would be blown straight out the jet. Once the bowl is full, needle valve closes, thats it, stagnant fuel reserve. If you supply the carb with the amount of fuel it needs to achieve a specific air/fuel ratio, the float bowl level will reach a point of equilibrium so that what goes in, goes out through the jet. The only problem, as I see it, is what happens during transient conditions. Will the system react quick enough for a rapid opening of the throttle? The piston in the carb is damped by the plunger and spring to create the affect of acceleration enrichment. This will still work but the level in the float bowl will drop until the flow goes up to match. We both obviously have very different understandings of how the carburettor works. Try the bit I highlighted in bold. I know I did many times, when fault finding other problems with my fuel supply. If AFR's change the instant you turn the pump off, then maybe you have a chance of it succeeding. I honestly dont see how they would though. Good luck with it 
Edited by stevieturbo on 21st Jan, 2007. 9.85 @ 145mph
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8604 Posts Member #: 573 Formerly Axel Podland |
22nd Jan, 2007 at 11:24:27am
On 21st of Jan, 2007 at 07:56pm evolotion said:
p.s. could you do me a favour, if theres any part number son that regulator, could you tell me them please. want to see if its the same as my regulator Evo - no part number I'm afaid, although it looks exactly the same as the MPi one I have. I think it would be safe to assume that all Rover pressure regulators from mid to late 90s are the same, they all control to 3 bar. Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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8604 Posts Member #: 573 Formerly Axel Podland |
22nd Jan, 2007 at 11:30:51am
Stevie, food for thought there.
Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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3596 Posts Member #: 655 Post Whore Northern Ireland |
22nd Jan, 2007 at 06:18:48pm
On 22nd of Jan, 2007 at 11:30am Axel said:
However, if I seal the float bowl (N/A), adjust the nozzle to the top of the bridge and use a needle that would otherwise give a lean setting, then the system will force more fuel through the carburetor giving the AFR we want. Im ot really sure what you are trying to desribe there... Maybe its something like this ?? Do you know what the rubber pipe linking the float bowl air, to a drilling in the carb at the plenum does ?? On boost, nothing. During vacuum, ie low throttle openings.... A calibrated drilling at the plenum face, effectively creates a restriction here, to vacuum in the intake manifold. This reduces the air pressure in the float bowl, which in turn helps for a low rpm/cruise lean mixture. Lots of carbs have similar vac-weakening devices. I think the turbo SU is the only one to have it though ?? 9.85 @ 145mph
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8604 Posts Member #: 573 Formerly Axel Podland |
22nd Jan, 2007 at 06:42:44pm
I'm actually developing this on a N/A engine that I've built just for the EFI development, but due to the lack of code will try this first.
Edited by Paul S on 22nd Jan, 2007. Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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