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Broken crankshaft key leads to tear down and timing service

Discussion in '2nd Gen. Tacomas (2005-2015)' started by p16, Feb 12, 2024.

  1. Feb 29, 2024 at 5:32 PM
    #241
    zguy1

    zguy1 Well-Known Member

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    If you are not replacing the sprocket and already replaced the key, do not try to remove it. Why potentially create another problem.

    Do you have any other pics of the camshafts head on as opposed to from the top? From your pics it looks off ever so slightly.
     
    p16[OP] likes this.
  2. Feb 29, 2024 at 5:33 PM
    #242
    p16

    p16 [OP] Well-Known Member

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    All sprockets are new and already replaced including the crank sprocket.
     
  3. Feb 29, 2024 at 5:33 PM
    #243
    zguy1

    zguy1 Well-Known Member

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    You are splitting hairs, half of a chain link off maybe a problem but a 1/16” of an inch may just be a bit of slop that’s built in.
     
    p16[QUOTED][OP] and DES2009 like this.
  4. Feb 29, 2024 at 5:36 PM
    #244
    p16

    p16 [OP] Well-Known Member

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    Here are two more that kinda show what my eye sees when I’m looking at it. Yeah at this point I’m wondering how much off is okay?

    IMG_1227.jpg
    IMG_1228.jpg
     
  5. Feb 29, 2024 at 5:39 PM
    #245
    p16

    p16 [OP] Well-Known Member

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    This is a good angle too

    IMG_1233.jpg
     
  6. Feb 29, 2024 at 5:39 PM
    #246
    p16

    p16 [OP] Well-Known Member

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    Maybe I’m just tripping but it bothers me, I might not have a choice though
     
  7. Feb 29, 2024 at 5:48 PM
    #247
    545

    545 Well-Known Member

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    Think about it in terms of gears
    Has it moved enough to be a tooth off? No? Then send it
     
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  8. Feb 29, 2024 at 5:51 PM
    #248
    p16

    p16 [OP] Well-Known Member

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    No I’d say MAYBE a quarter tooth
     
  9. Feb 29, 2024 at 6:01 PM
    #249
    zguy1

    zguy1 Well-Known Member

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    Hard to tell if it is off from the pics. I bet if you wanted to put a crescent wrench on either of the banks cams it would move the gears ever so slightly to ease your ocd.
     
  10. Feb 29, 2024 at 6:04 PM
    #250
    p16

    p16 [OP] Well-Known Member

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    I’ve tried that it just pulls the other bank and makes it off when I do that. Since the main chain is on by then
     
  11. Feb 29, 2024 at 6:05 PM
    #251
    p16

    p16 [OP] Well-Known Member

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    I guess the question is how much off is acceptable and will it really affect anything. My old chains were stretched and off more than this and I never got a code or misfires or anything soo…
     
  12. Feb 29, 2024 at 6:22 PM
    #252
    zguy1

    zguy1 Well-Known Member

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    If you are off by a tooth then it’s a problem. If you have new timing components then there shouldn’t be a problem since there is nothing that can be worn out. Send it.

    Installing the timing cover is the hardest part remaining in my opinion. So get ready to test your patience.
     
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  13. Feb 29, 2024 at 6:23 PM
    #253
    p16

    p16 [OP] Well-Known Member

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    Yeah I feel like once I get this timing done and the cover it’s all pretty straight forward from there
     
  14. Mar 1, 2024 at 7:54 AM
    #254
    p16

    p16 [OP] Well-Known Member

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    Any other opinions on my dilemma here? Does it being barely off affect timing? Am I being too anal
     
  15. Mar 1, 2024 at 7:58 AM
    #255
    b_r_o

    b_r_o Gnar doggy

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    It's probably fine. You have to jump a complete tooth left or right to change anything anyway

    Spin it over a few times and recheck your marks
     
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  16. Mar 1, 2024 at 8:51 AM
    #256
    TenBeers

    TenBeers Well-Known Member

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    Yeah.
    Yeah, it would have to be a lot further off than what your pics show -- I thought you were just showing us how well you aligned the marks.

    When running, the tensioners will take up some slack. The valve springs will try to push it off a bit. Maybe post a pic from the front?
     
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  17. Mar 1, 2024 at 9:43 AM
    #257
    p16

    p16 [OP] Well-Known Member

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    I’ll take a another pic in a little but here’s one that shows it

    IMG_1228.jpg
     
  18. Mar 1, 2024 at 9:44 AM
    #258
    p16

    p16 [OP] Well-Known Member

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    Yeah I guess I’m not really worried about anything being worn, more so whether or not the cam is aligned correctly. I feel like the engine moves so fast that much off probably wouldn’t affect it too much.
     
  19. Mar 1, 2024 at 9:46 AM
    #259
    p16

    p16 [OP] Well-Known Member

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    This is how off it was when set to tdc before taking off my old timing components

    IMG_1127.jpg
     
  20. Mar 1, 2024 at 9:46 AM
    #260
    TenBeers

    TenBeers Well-Known Member

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    Yeah.
    Like others have mentioned, that's not enough to worry about. If everything else is lined up where the proper tooth is closer to the reference mark than any other teeth, you should be just fine.
     
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