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Thread: What have you done to your Miata today?

  1. #8986
    MOTM July 2015 chiefmg's Avatar

    '81 RX-7 GS, '00 Miata SE, '16 Camaro (wife's), '15 CX-5 GT AWD

    Join Date
    Oct 2005
    Location
    N KY
    Posts
    2,021
    All my parts came in today so I set about pulling the supercharger and upper intake manifold. Got about 3 ounces of oil out of the supercharger so that needed doing. There was some oil residue in the charge air piping, not sure if this was a result of my using different oil or not.
    When I removed the upper intake manifold and the injectors, I saw signs there was leakage past the O-rings on the #1 and 4 cylinders. Pulling the injector spacers showed the O-rings were collapsed:









    I was given two sets of O-rings after sending the injectors out for checking, I used the larger set as they seemed to fit tightly but it looks like they were too tight. No way O-rings should have a flat cross-section after just a couple of years. I cleaned everything up and installed new O-rings and head seals using the lubricant provided. Installed the new fuel pulsation damper as well, just in case it was a contributing factor.



    The results on a quick test drive? No more overpowering fuel smell under boost. Have to do some more driving to see if that also took care of the CEL.
    Last edited by chiefmg; 08-14-2019 at 10:49 PM.

  2. #8987
    High Speed Low Drag aMaff's Avatar
    muffled screams
    Protege5 & Protege FS Moderator

    1992 Miata / 2003 Pathfinder

    Join Date
    Sep 2005
    Location
    Lilburn, Ga
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    18,800
    That's quite an update, I hope that actually corrects the issue.

    Imagine how much easier all that would be if you cut the whole front out of the car though!
    ~Andrew
    Atlanta Region SCCA
    114 DP

  3. #8988
    MOTM July 2015 chiefmg's Avatar

    '81 RX-7 GS, '00 Miata SE, '16 Camaro (wife's), '15 CX-5 GT AWD

    Join Date
    Oct 2005
    Location
    N KY
    Posts
    2,021
    Quote Originally Posted by aMaff View Post
    That's quite an update, I hope that actually corrects the issue.

    Imagine how much easier all that would be if you cut the whole front out of the car though!
    You and me both brother.

    I'll leave the Frankenstein mods to you racers.

  4. #8989
    High Speed Low Drag aMaff's Avatar
    muffled screams
    Protege5 & Protege FS Moderator

    1992 Miata / 2003 Pathfinder

    Join Date
    Sep 2005
    Location
    Lilburn, Ga
    Posts
    18,800
    It was brought to my attention today that this was the fastest ever run by a Miata up this hillclimb course!

    Quote Originally Posted by aMaff View Post
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