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500, 472, 425, 368 Discussion, Lets have a vote... in Cadillac Engine Technical Discussion; Doesn't come with the injectors. I think I understand, I'll do a bit of research. In your opinion, do you ...
  1. #31
    terrible one's Avatar
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    Re: Lets have a vote...

    Doesn't come with the injectors.

    I think I understand, I'll do a bit of research.

    In your opinion, do you think that I should do this? I've been told that its going to be a pain getting it to work right, etc etc. I kind of halfway just want to go with the carb...

  2. #32
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    Re: Lets have a vote...

    I don't think it is a good idea to dump the PCV valve.... it really dosn't do anything but help, same as EGR (when working correctly) ....

  3. #33
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    Re: Lets have a vote...

    MTS sells brand new stock replacement injectors. Would those be ideal?

    Dumping the PCV valve makes it easier on me. I'm dumping the EGR for flow reasons.

  4. #34
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    Re: Lets have a vote...

    I'm not sure the stock size injectors are good for flowing enough fuel for a warmed up engine. Then again they might be. Ask Al.

    PCV gets rid of nasty ass blowby gasses. My reccomendation is to keep it if you can.

  5. #35
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    Re: Lets have a vote...

    Yeah, good idea. Ask Al.

    What are blowby gases?

  6. #36
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    Re: Lets have a vote...

    Quote Originally Posted by terrible one
    MTS sells brand new stock replacement injectors. Would those be ideal?

    Dumping the PCV valve makes it easier on me. I'm dumping the EGR for flow reasons.
    No reason to use stock early EFI injectors if you are running a Megasquirt. Those injectors command collector prices. They are also low impedance and place different demands on the switching semiconductors. Better off with a common newer type. I'd ask around on the Megasquirt message board to see if anyone knows what else fits in there. Keep the PCV. Keep the EGR unless you are trying to make every last drop of power and completely ignoring economy. It should not make any difference at wide open throttle but can allow you to use more timing at cruise.

  7. #37
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    Re: Lets have a vote...

    Quote Originally Posted by terrible one
    Yeah, good idea. Ask Al.

    What are blowby gases?
    PCV is Positive Crankcase Ventalation... which is just that... it allows the blowby gasses to be recycled.... without it, or with a bad PCV valve, the engine can sluge up rather easy...

    the blow by gasses are whats left of the fuel/air mixture, that managed to slep between the cylinder walls and the rings... blow by..... now all that stuff is stuck in the crank case with no where to go... but the PCV valve simple takes that gas and usually dumps it in the valve cover or intake manifold... I vote to keep it, it does no harm and a new PCV valve is $3.

  8. #38
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    Re: Lets have a vote...

    So on my manifolds (not stock) can I just drill another 1.25" hole for the PCV valve, get a new valve and grommet, and be good to go?

    I'm going to be using a pre-egr manifold for flow reasons.

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