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Odd Camshaft wear

Posted by EG Hatch, Sep 19, 2015

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  1. EG Hatch

    EG Hatch Proven Member

    87
    4
    Joined Oct 24, 2009
    Austin, Texas
    Hi guys I recently purchased some dks 272 cams off of the classifieds here and they have some unusual wear on the intake cam. It almost looks like the cam was skipping, and I'd like some opinions on whether I should run them. Images attached. The second image is a journal on the exhaust cam, which doesn't have the same wear as the intake.

    Again all journals on intake cam have this skipping wear pattern, and all exhaust journals show wear typical of the second image.

    Could it be due to the shaft being warped or bent?

    Thanks,
    Eric
     

    Attached Files:

    3K  0

    1990 Plymouth Laser RS Turbo
    manual · 1G DSM

    3K  0

    1990 Eagle Talon TSi AWD
    manual · 1G DSM
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  2. 97 eclenger

    97 eclenger Proven Member

    385
    41
    Joined Jan 22, 2014
    Durham, North Carolina
    have a machine shop check them out. or if you have a caliper, measure the diameter. if it isn't rough and in oem spec it should be fine. but check it out first
     
  3. EG Hatch

    EG Hatch Proven Member

    87
    4
    Joined Oct 24, 2009
    Austin, Texas
    None of the wear catches with the fingernail test. That's the best roughness test I have at hand
     

    3K  0

    1990 Plymouth Laser RS Turbo
    manual · 1G DSM

    3K  0

    1990 Eagle Talon TSi AWD
    manual · 1G DSM
    Loading...
  4. u lost

    u lost Proven Member

    31
    6
    Joined Sep 25, 2010
    APEX, North Carolina
    I'm not sure I would use them.If all the journals on the intake cam has the skip marks something is going on with it.Get a machine shop to check it out.
     

    Land Speed Build 1K  0

    1992 Eagle Talon TSi AWD
    manual · 1G DSM
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  5. Dsmkauai

    Dsmkauai Proven Member

    3,928
    410
    Joined Feb 20, 2010
    Kauai, Hawaii
    Have them polished I did that with my hks cams that had similar wear marks. As long as they are in spec it will be fine. My buddy has a lathe and did them for me :)
     

    Drag Race Build 596  2

    1995 Eagle Talon TSi
    fwd · automatic · 2G DSM

    6K  0

    1991 Mitsubishi Galant VR-4
    13.7 @ 101 · Galant VR-4

    4K  0

    1995 Mitsubishi Eclipse GST
    12.408 @ 112.930 · 2G DSM

    2K  0

    1998 Eagle Talon TSi
    manual · 2G DSM
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  6. EG Hatch

    EG Hatch Proven Member

    87
    4
    Joined Oct 24, 2009
    Austin, Texas
    I ended up taking the cams to be polished at a local machine shop and they are now mic'd in spec and ready to go
     

    3K  0

    1990 Plymouth Laser RS Turbo
    manual · 1G DSM

    3K  0

    1990 Eagle Talon TSi AWD
    manual · 1G DSM
    Loading...
  7. Dsmkauai

    Dsmkauai Proven Member

    3,928
    410
    Joined Feb 20, 2010
    Kauai, Hawaii
    Nice bro! ;)
     

    Drag Race Build 596  2

    1995 Eagle Talon TSi
    fwd · automatic · 2G DSM

    6K  0

    1991 Mitsubishi Galant VR-4
    13.7 @ 101 · Galant VR-4

    4K  0

    1995 Mitsubishi Eclipse GST
    12.408 @ 112.930 · 2G DSM

    2K  0

    1998 Eagle Talon TSi
    manual · 2G DSM
    Loading...
  8. bonecollector

    bonecollector Proven Member

    103
    25
    Joined Nov 9, 2011
    Peoria, Arizona
    The previous owner of the cams probably F'd up and installed non-matching camshaft caps from another head or, Install the caps backwards or, Installed the cams in a head with warped cam journals.
     

    Showcar Build 739  9

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4
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