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Thread: Excessive crankcase pressure

  1. #61
    ✨ Senior Gearhead 3K+ SmileyFace's Avatar
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    Re: Excessive crankcase pressure

    Impressive Joe, you do good work, I was thinking in terms of a square catch can. You are doing this to reduce excessive oil pressure?
    Mario E Ordonez
    SmileyFace is a 2014 MX-5 Miata NC dressed in Black Mica and Coco cinnamon leather seats.

  2. #62
    Original Gearhead Joe Morreale's Avatar
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    Re: Excessive crankcase pressure

    It’s just to reduce excess blow by, caused by increased pressure, when in boost. I’ve essentially doubled the horsepower. With the added hp the stock motor needs to vent more.
    2001 SE British Racing Green - FM frame rails - FM solid sway bar - FM clutch- Mishimoto 53mm radiator - Bilsteins -
    Complete MK Turbo kit with intercooler - 3'' custom exhaust - Custom door panels - Custom "shorty" console

  3. #63
    Original Gearhead Joe Morreale's Avatar
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    Re: Excessive crankcase pressure

    More fun facts. When removing a dried pcv grommet, it must break and fall into the valve cover.

    I got the fitting I was waiting for and it was too damn big for the pcv grommet. I have a new grommet and it seems like a 1/2" Barb will work in it. I'm pretty sure I can get it at home depot. Now my decision is do I wait for the powder coated to finish my other valve cover, or take this one off, get the grommet out and reinstall it. I expect the powder coat to be done today. I only have the Miata so I can't pick it up unless I ride my bike to my wife's school and go through a bunch of security, just to get her van. Too antsy to wait until tomorrow.
    2001 SE British Racing Green - FM frame rails - FM solid sway bar - FM clutch- Mishimoto 53mm radiator - Bilsteins -
    Complete MK Turbo kit with intercooler - 3'' custom exhaust - Custom door panels - Custom "shorty" console

  4. #64
    Events Manager minuteman048's Avatar
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    Re: Excessive crankcase pressure

    That happened to me once and in falls into a box you have to unscrew the cover off to get it out from the inside. Thankfully it does not fall into the valve train.
    99 Emerald Mica, 01 Header, Ground Control Springs w/Bilstein HDs. Thompson CAI, High Flow cat w/Borla Exhaust, Fab9 COP's
    Good Judgement Comes From Experience
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  5. #65
    Original Gearhead Joe Morreale's Avatar
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    Re: Excessive crankcase pressure

    After putting 2000 miles on it, I thought it would be a good time to empty the catch can. I have the pcv blocked off and both the hot side and the pcv line running to the catch can. To my surprise there was only about 3 or 4 ounces of oil mixed with water and fuel in it. I think back to my old motor that would puke that much in a hundred miles. Conclusion: newer motor is in pretty good shape as far as blow by is concerned.
    2001 SE British Racing Green - FM frame rails - FM solid sway bar - FM clutch- Mishimoto 53mm radiator - Bilsteins -
    Complete MK Turbo kit with intercooler - 3'' custom exhaust - Custom door panels - Custom "shorty" console

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  7. #66
    Individual-1 ☚☻☛ Agent☣Orange's Avatar
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    Re: Excessive crankcase pressure

    Looks like a shot of espresso, huh?

  8. #67
    ⚙ Gearhead 1K+
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    Re: Excessive crankcase pressure

    glad to hear that the new motor is behaving

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