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2G Timing side oil leak

Posted by Turbodhi, Mar 1, 2020

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  1. Turbodhi

    Turbodhi Proven Member

    93
    5
    Joined Oct 18, 2015
    Olathe, Kansas
    Hey guys, I've got a pretty serious oil leak on the timing side of my engine. It looks like the previous owner of my car got rid of the balance shaft and did not plug the hole in the side of the block where the tension pull and the sprocket for the balance shaft were. I'm going to guess that's where its coming from. It should be number 15 on the photo included. Any idea on the length and thread pitch I'm going to need to plug it?
     

    Attached Files:

    Street Build 629  2

    1997 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
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  2. Kryndon

    Kryndon Proven Member

    431
    252
    Joined Jan 10, 2014
    Bulgaria, Europe
    Look on this picture. Are you talking about the bolt circled in red, or about the bigger hole, circled in yellow? The bolt is an M8x45mm, standard Mitsu thread pitch 1.25mm, part number MF244860. However, that's a longer bolt+washer which keeps the tensioner pulley in place. So just use a shorter M8x1.25 pitch bolt to plug it. The part circled in yellow is where the balancer spacer is situated. Are you saying that's completely empty and you can see through it? In my case I've got a machined plug for it and a little bit of red RTV to seal it up.

    IMG_0751.JPG
     

    Street Build 3K  12

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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    camocorvette likes this.
  3. iugrad92turbo

    iugrad92turbo Supporting Member

    10,548
    439
    Joined May 22, 2007
    Kalamazoo, Michigan
    oil pump, or could be the oil filter housing, those are in the area where it could leak as well.
     

    7K  5

    1992 Eagle Talon TSi
    awd · manual · 1G DSM
    Loading...
    camocorvette likes this.
  4. Turbodhi

    Turbodhi Proven Member

    93
    5
    Joined Oct 18, 2015
    Olathe, Kansas
    Yes that's the one that's missing and yes it is completely empty I can see the thread.
     
    Last edited: Mar 1, 2020

    Street Build 629  2

    1997 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
    Loading...
  5. Turbodhi

    Turbodhi Proven Member

    93
    5
    Joined Oct 18, 2015
    Olathe, Kansas
    Using the same picture, what about the ones I circled in green. I plan to use an aem oil pressure gauge. Can I plug these to do I don't have to worry about it?
     

    Attached Files:

    Street Build 629  2

    1997 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
    Loading...
  6. camocorvette

    camocorvette Probationary Member

    28
    15
    Joined Aug 5, 2012
    Spanaway, Washington
    Yeah, M8 bolt. Just grab a shorter one and put some rtv on it. Dont over tighten.
     

    Street Build 444  3

    1995 Mitsubishi Eclipse GST
    300 whp · 315 lb/ft · 2G DSM
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  7. Jk's97DSM

    Jk's97DSM Proven Member

    113
    29
    Joined Apr 27, 2006
    Norfolk, Virginia
    Take a couple pics. There are a few things that can leak.
     

    132  1

    1990 Mitsubishi Mirage EXE (SLO CSM)
    manual · Misc Vehicles

    Street Build 458  1

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM
    Loading...
  8. BLACK'98DSM

    BLACK'98DSM Proven Member

    1,555
    627
    Joined Feb 9, 2019
    Hoover, Alabama
    The one on the left is the electric sender for the stock gauge. Are you getting an electrical gauge or a mechanical one?
     

    Road Race Build 3K  10  25

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM

    105  3

    2008 Tomberlin Crossfire 150R
    rwd · manual · Misc Vehicles

    144  6

    2008 Tomberlin Crossfire (325 swapped)
    rwd · manual · Misc Vehicles
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  9. Turbodhi

    Turbodhi Proven Member

    93
    5
    Joined Oct 18, 2015
    Olathe, Kansas
    I would ultimately like to get a digital but I would most likely relocate it
     

    Street Build 629  2

    1997 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
    Loading...
    BLACK'98DSM likes this.

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