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This is a discussion on The Busted Bugeye within the Builds forums, part of the Tech & Modifying & General Repairs category; Out with the old, in with the new.. Unfortunately my previous piston/block combination was not up to another build. So ...

  1. #16
    OMG WTF MainFrame's Avatar
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    Out with the old, in with the new..



    Unfortunately my previous piston/block combination was not up to another build. So I've picked up a new set of used case halves and am back down to a 99.54mm Arias piston this time. I'm sad to see the case go, but this will leave me with more meat on my cylinder walls.



    Heads ready for tear down.



    Goodbye ol' trusty.. hopefully you will find a new home with some new Darton sleeves.



    Crank still looks good.



    CP pistons are a little worn, but otherwise still on good condition. Not sure what I'm going to do with these now.



    Yep, she was burning oil in the chamber.. no doubt about it.

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    OMG WTF MainFrame's Avatar
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    Last edited by MainFrame; 05-30-2013 at 04:06 PM.

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    OMG WTF MainFrame's Avatar
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    Intake manifold swap..






    Giant intake is.. well, giant.


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    OMG WTF MainFrame's Avatar
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    Hot side FMIC pipe looks good.. can't get a much shorter route than that.








    Hashing out the new fuel system.. this is what I've got so far.




    *fixed the order
    Last edited by MainFrame; 12-15-2014 at 12:19 PM.

  7. #21
    \_(ツ)_/ Rambo's Avatar
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    Are fuel rails always plumbed in series (that's an honest question)? I guess it might not matter due to the cylinder firing order, I just figured they'd be in parallel.
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  8. #22
    zax
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    Fix your diagram!!

    (we talked about this )


    The cylinder IDs are wrong, and the plumbing needs to be reversed.
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  9. #23
    OMG WTF MainFrame's Avatar
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    Quote Originally Posted by Rambo View Post
    Are fuel rails always plumbed in series (that's an honest question)? I guess it might not matter due to the cylinder firing order, I just figured they'd be in parallel.

    Some people switch to parallel. The old school of thought was that parallel would be better, but it turns out it causes more issues, and doesn't fix any problems with running series, because evidently there are none.

  10. #24
    \_(ツ)_/ Rambo's Avatar
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    Quote Originally Posted by MainFrame View Post
    Some people switch to parallel. The old school of thought was that parallel would be better, but it turns out it causes more issues, and doesn't fix any problems with running series, because evidently there are none.
    Yeah, I'm used to designing manifolds where equal pressure is critical across all ports, but my manifolds simultaneously fire all ports. Once I thought about the individual firing sequence, it makes sense that any pressure deviations between fuel rails would be resolved in the system before the next injector fired.
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  11. #25
    OMG WTF MainFrame's Avatar
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    Quote Originally Posted by Rambo View Post
    Once I thought about the individual firing sequence, it makes sense that any pressure deviations between fuel rails would be resolved in the system before the next injector fired.

    And if you think about the pressure drop running away from the injector, then feeding in reverse firing order makes some sense too.. because by the time #4 is ready to fire again the last injector to have fired would be #1.. on the far side of the flow.




    I'm rethinking a few things after getting some input from Lance Lucas.. mainly my pump controller and the use of PTFE in the bay. Evidently a good rubber line will be better to use because it helps dampen injector pulses naturally, whereas PTFE is basically a hard line.

  12. #26
    zax
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    Quote Originally Posted by MainFrame View Post
    Evidently a good rubber line will be better to use because it helps dampen injector pulses naturally, whereas PTFE is basically a hard line.
    I understand the logic, but I'm not sure I agree. I'll have to think about this.

    Something something something fuel cavitation yada yada yada.
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  13. #27
    OMG WTF MainFrame's Avatar
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    Quote Originally Posted by zax View Post
    I understand the logic, but I'm not sure I agree. I'll have to think about this.

    Something something something fuel cavitation yada yada yada.

    Yeah.. I hadn't ever really thought about it before, but Lance Lucas told me not to use PTFE in the bay for that reason. I would guess he has some first hand experience with it.



    This is where I have ended up with the diagram.. ordering hose and fittings by the end of the week.

    Click image for larger version. 

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    Last edited by MainFrame; 12-17-2014 at 02:28 PM.

  14. #28
    OMG WTF MainFrame's Avatar
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    Welder at the fabrication shop doesn't fool around. It's a nice change of pace from having the car sit at a shop litteraly a year or more before they even touch it..



  15. #29
    The Guy On The Couch TownLine500's Avatar
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    What are they fabricating for you?
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  16. #30
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    Quote Originally Posted by TownLine500 View Post
    What are they fabricating for you?
    From the pics, I'd say the I/C pipe.
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