Engine Dieseling - Options?

Small Block Mopar Engine

  1. yellow rose

    yellow rose Overnight Sensation FABO Gold Member

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    Ok, without doing a bunch of that is way too much cranking compression for that cam timing and CR.

    Did you degree the cam, or line up the dots.

    If you did the former, I have no idea what’s going on.

    If you did the latter, you have no idea where that cam is installed.

    Just trying to get my mind around why the cranking compression is so high.
     
  2. billsdartgt

    billsdartgt FABO Gold Member FABO Gold Member

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    cam was degreed in, perhaps Im cranking too many times to get those numbers
     
  3. RustyRatRod

    RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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    I normally crank the engine no more than six times.
     
  4. 33IMP

    33IMP Well-Known Member

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    I hurt the decent 396 in my 55 chevy, a friend got a junkyard (but running) 396 for me to put in while i fixed the hurt one. Not a lot of power, a lot of oil burning, but at least it was running, and i swapped em in one day. The flat cam 396 cost me $125. Those days are gone.
     
  5. billsdartgt

    billsdartgt FABO Gold Member FABO Gold Member

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    I did 4 - 5th for good measure on each but no change after the 4th
     
  6. yellow rose

    yellow rose Overnight Sensation FABO Gold Member

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    Well, I’m stumped.
     
  7. RustyRatRod

    RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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    Bill, have you tried more than one compression gauge?
     
  8. billsdartgt

    billsdartgt FABO Gold Member FABO Gold Member

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    not yet, this is one I just bought, my other is loaned out - will do another warm check next weekend with my other gauge

    This engine has been an anomaly for me from the start - if it will run out even half ass it will have to do for a while - weird thing is it ran pretty good with the small Lunati I put in - then I got smarter and had to fix sh*t LOL
     
  9. lead69

    lead69 hopeless car junkie

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    As mentioned that is ton of cranking compression. I run a 247/251 @.050 sft on a 108ls installed at 105icl in my 410 with a true 10.5 static and I get 195 on the gauge. My brothers 360 has 10.8 static and was running a isky oval track cam that was 226/226 @.050 on a 107ls and installed on a 103icl and only bumped the gauge at 210-220.
     
  10. billsdartgt

    billsdartgt FABO Gold Member FABO Gold Member

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    well the car hit the streets for a couple of shakedown runs - exhaust still a little rich but the car will slam you backwards if you get on it - made a little vid of the exhaust - car idles around 850ish and only about a 100 rpm drop in gear - have some tuning to do and still will follow up on the compression when I get my other gauge back but for now its gonna get a break

     
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