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Thread: Upgrading my Noble

  1. #11
    Join Date
    Sep 2008
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    The compression test was between 110 and 125 for the cylinders - not bad numbers
    The leakdown test had 9% to 12% - high numbers
    There is a short video on youtube after opening the engine up showing how loose the piston was in the cylinder
    https://www.youtube.com/watch?v=hOWyrAV30fA
    you can search "noble piston" and it will come up

  2. #12
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    Dec 2013
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    Which injectors did you go with?

  3. #13
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    Right now I am using Blackops M-series X17 72lb/hr injectors
    I may go a little bigger but I think this will do the job.
    These should fit with the fuel rail without requiring modifications
    fitting it up in the next few days.

  4. #14
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    Quote Originally Posted by m54321 View Post
    Right now I am using Blackops M-series X17 72lb/hr injectors
    I may go a little bigger but I think this will do the job.
    These should fit with the fuel rail without requiring modifications
    fitting it up in the next few days.
    Let me know how they work out, I'm in the market for bigger injectors, although not as high flowing as those.

  5. #15
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    FWIW I'm running a matched set of Siemens 75 lb/hr low impedance injectors driven by an Acceleronics VersaFueler (naturally )

    Idle pulsewidth is very short with this biggish injector on a smallish engine, but I've flow tested all 6 injectors from 10 ms pulsewidth all the way down to where they won't open. Low impedance injectors can handle short pulses quite well.

    My flow test rig:


  6. #16
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    Here are some more photos of the engine
    1- Engine with the pistons installed
    2 - custom oil pump

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  7. #17
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    Wow, didn't realize how ginormous the right engine mount bracket was

  8. #18
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    That is not the engine mount - that is just the mount to hold the plastic manifold

  9. #19
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    Hmm, pretty sure that red piece is where you bolt the engine to the RHS mount?

  10. #20
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    You are correct I stand corrected - I was thinking of another part.

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