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2G Bad Knock/Screeching

Posted by Koda, Aug 11, 2020

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  1. Koda

    Koda Proven Member

    72
    8
    Joined Jun 2, 2019
    Butler, Pennsylvania
    My 1995 Gsx started making this awful sound after pushing 18psi on my brand new hx40. It gets worse the louder it revs and the knocking is accompanied by a terrible screeching sound from the valve cover it sounds like. I have a data log and video to go with it. I have no idea what this sound is , please help....
     

    Street Build 312  1

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  2. Koda

    Koda Proven Member

    72
    8
    Joined Jun 2, 2019
    Butler, Pennsylvania
     

    Street Build 312  1

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  3. Koda

    Koda Proven Member

    72
    8
    Joined Jun 2, 2019
    Butler, Pennsylvania
    im thinking I might have jumped timing... And maybe bent the valves. Ive already done the timing 3 times on this since owning it and at this point im really frustrated with it but would like to hear what anyone else might think it is and if there are any reliable/good shops anyone knows about around the Pittsburgh area, please let me know.
     

    Street Build 312  1

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  4. jed344

    jed344 Supporting VIP

    987
    152
    Joined Jan 10, 2008
    Waterville, Iowa
    Sounds like spun bearing.
     

    1K  38

    1997 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  5. pauleyman

    pauleyman DSM Wiseman

    5,991
    1,398
    Joined Nov 19, 2011
    oklahoma city, Oklahoma
    At least take off accessory belts. That screeching sounds external. Bad harmonic balancer? Any accessory etc. Go look at the obvious
     

    Street Build 3K  1

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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    luv2rallye and ThunderChild like this.
  6. wrencher

    wrencher Proven Member

    358
    39
    Joined Nov 20, 2005
    Chicago, Illinois
    I agree.
     
  7. Koda

    Koda Proven Member

    72
    8
    Joined Jun 2, 2019
    Butler, Pennsylvania
    Correct, I dropped the oil pan and found brass shavings in it... the water pump must have been what the squeaking was but it was still working and pumping coolant.
     

    Street Build 312  1

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  8. Koda

    Koda Proven Member

    72
    8
    Joined Jun 2, 2019
    Butler, Pennsylvania
    I was taking accessory belts off the next day , not 10pm at night but I figured I could post and see what other people’s opinions are before I tore into it. So I knew what to look for
     

    Street Build 312  1

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  9. pauleyman

    pauleyman DSM Wiseman

    5,991
    1,398
    Joined Nov 19, 2011
    oklahoma city, Oklahoma
    Alternator. Water pump and harmonic balancer are my guesses.
     

    Street Build 3K  1

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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  10. Koda

    Koda Proven Member

    72
    8
    Joined Jun 2, 2019
    Butler, Pennsylvania
    yes the water pump started squeaking whenever I spun a bearing. But I don't know if they are related at all. The bearing on the crankshaft was just weak and then when I turned my boost up to 20psi on my hx40 I think that finished it off. I wasn't to lean, there wasn't any knock. I wasn't beating on the car. Im pulling the engine this week to asses how bad the damage is but the oil only contained brass shavings which would just be the outer piece of the the bearing which would mean that the crank wasn't touched and in that case I could reuse it.
     

    Street Build 312  1

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  11. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    6,747
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    Joined Nov 14, 2013
    Independence, Kansas
    Just have to mike the crank and have the rod resized so it will hold a new insert.
     

    Street Build 5K  29

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    2K  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    892  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 1K  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  14  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
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