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Mechanical help needed **Problem Solved**

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Muddytazz, Aug 17, 2002.

  1. Muddytazz

    Muddytazz 1 ton status

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    Post deleted by Muddytazz
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Mechanical help needed

    The part of the stroke is determined by cam position. Without the cam in the motor there is only TDC and BDC in any of the cylinders. If you installed the cam in the motor as you described when #1 was at TDC it should be fine. If it's all together try removing the dist and turning it 180 degrees and drop it back in. Probably the number one reason for any small block to not fire up after a cam swap is the dist being 180 out. I've done that more times than I care to admit./forums/images/icons/blush.gif

    Rene
     
  3. Muddytazz

    Muddytazz 1 ton status

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    Re: Mechanical help needed

    this is in my DD...drove it over to my dads barn last night, only thing i did was replace timing chain and gears....same cam, didn't remove dist.
     
  4. tipoil

    tipoil 1/2 ton status

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    Re: Mechanical help needed

    ON the cam spocket,the timing mark should be at the 6 o clock(down)and the crank spocket should be at 12 o clock (up) they should be face to face.
    not both at 12 o clock

    have a look at this photo (step 2)
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Mechanical help needed

    That pic has it set for #1 TDC...it makes lining up the marks easy, but they don't tell you that's the exhaust stroke. One more revolution puts #1 at TDC on the compression stroke and the cam 'dot' at 12 o'clock.

    Jeff never had the distributor or cam out, he just replaced the timing set. I talked to him on the phone and he is not getting any spark for some reason.

    rene
     
  6. Muddytazz

    Muddytazz 1 ton status

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    Re: Mechanical help needed

    Well after talking with rene on the phone last night, we got some ideas going...grabbed my voltmeter and did some checking on the ingnition module, coil, condenser, and just about every wire that came through the firewall was getting the proper amount of juice. So I went ahead and pulled the front stuff off again to get to the timing chain to double check the cam and crank gears for proper alignment and that turned out to be good. Put that all back together and started scratching my head, drank a beer and thought, what about the plugs (cause i wasn't getting spark anymore after installing new timing set) were pretty clean, but took a small fine wire brush and brushed each one a couple times, then I checked the gap..45..no biggie, just a tiny bit wide so i gapped them down a bit to 35, put em back in. Drank another beer, pumped the throttle linkage a couple times, went to hit the key and the ole girl fired right up. Only thing I can figure is that with the new timing set, the 45 gap was to much.
     
  7. Muddytazz

    Muddytazz 1 ton status

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    Re: Mechanical help needed

    Anyone ever experience anything like that?
     
  8. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Mechanical help needed

    Glad ya got it up and running again...weird fix though/forums/images/icons/crazy.gif /forums/images/icons/confused.gif

    Rene
     

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