Speculating beyond bolt-ons.

Discussion in 'Fiesta ST Engine Upgrades' started by wash, Oct 17, 2013.

  1. wash

    wash Active Member

    I was thinking about the fuel system trying to find a company that does high performance injectors.

    What I read that surprised me is that the 1.6 has the fuel injector right next to the spark plug, firing pretty much directly down in to the cylinder. I had thought it was on the side like the 2.0.

    Looking further, I thought the injector was a Bosch but it seems like Continental might be the OEM, especially when their press releases indicate that their new MSI XL3 injector entered production in an un-named 4 cylinder 1.5 liter gasoline turbo direct injection engine earlier this year (sounds like the EcoBoost 1.5) and their older generation MSI XL2 injector is a 6 hole that sounds like what the 1.6 has.

    From what I've read it seems like the 1.6 has many fathers, base engine design dates back to Yamaha, high pressure fuel pump and ECU(?) by Bosch, turbocharger and TiVCT(?) by Borg Warner and injectors by Continental.

    Any way, the XL2 injector is designed to work at 150 bar while the Bosch high pressure fuel pumps can work at 200 bar or more.

    If we are really lucky the XL3 injector will be physically and electrically compatible because its a 250 bar injector and would probably move the bottleneck to the pressure output of the HPFP which could be increased by a cam with more or taller lobes.

    I want to look at what the 1.0 EcoBoost has, but this might explain how the 1.6 may have an injector size issue.
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  3. D1JL

    D1JL Well-Known Member

    All I can say is good luck!

    On a previous car, I literally spent tens of thousands of dollars to keep making it more powerful.
    I had almost 350 HP in a TWIN CHARGED '04 Mini Cooper S and that was a real handful.
    I am waiting to see if you have just some of the problems I know that you will encounter.

    Trust me when I say that fuel pressure is not an issue you will need to worry about.
    The stock injectors can be resized and an inline Bosch pump can be added.

    I stripped it and sold it for next to nothing.

  4. wash

    wash Active Member

    I keep my cars for a long time, I don't need a new one every year, that's why I'm not afraid of spending time and money to make it better.

    I think I've heard you say things about fuel pumps before. I think the high pressure fuel pump operates around 100-150 bar, that's up to about 2,100 psi, maybe more if the system isn't what I suspect. Its not an engine like the Scion FRS that has supplementary port fuel injection that runs 3-4 bar.

    If Bosch made an electric fuel pump that could supply pressure like that, it would look like a lowrider hydraulic pump and you would probably have to mount it in the front passenger foot well because it wouldn't fit anywhere under the hood.
  5. D1JL

    D1JL Well-Known Member

    I had that Mini for seven years.
    Although it is almost back to stock and only putting out 220 WHP, it is still running great for the new owner today.
    The pump I speak of is similar to that used by Porsche.

  6. wash

    wash Active Member

    What's the flow rate at 2,100 psi?
  7. pelotonracer2

    pelotonracer2 Active Member

    That exhaust manifold begs to be Extrudehoned...
  8. stuntdoogie

    stuntdoogie Active Member

    You guys need to get one of these, instantly gave me 50hp with the force [​IMG]

    Sent from my SPH-D710 using Tapatalk
    Firesail and joker96 like this.

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