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24x SBC conversion wont start - Riddle time

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Old Jun 25, 2018 | 11:07 PM
  #41  
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Originally Posted by evilstuie
I just loosened off the roller rockers until the pushrods could spin in place with no preload and away it went.
I think I was looking for a much more complicated problem when Occam's razor applied.
Awesome. Glad that fixed it.
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Old Jun 26, 2018 | 07:21 AM
  #42  
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Originally Posted by evilstuie
Will do.
I've had the injectors unplugged while I've been diagnosing the spark, but I have a feeling it's all in the valve settings now.
I had 2 of the plugs out, 1 & 3 while cranking to check for valve positions and the spark is VERY strong. It was consistent pattern firing and there was no abnormal sparking. Plus I have the iridium msd plugs so that might help too.

I'll loosen off the remaining valves after work, change the oil, spit a bit of oil down the cylinders and then give a quick compression test on a few cylinders, then try and fire it up.

I was under the impression from everything I've read that the valve adjustment on hydraulic rollers is easier because you can clock them half a turn more after they catch and the hydraulics will pick up the slack/auto-adjust to the right height, but I don't think that was the case with mine.
Anyway, we'll see.
Depends on the lifter how much travel they have. I had howard lifters that after no play in pushrods was told by howards only a 1/4 turn of preload. I did something similar to you but all my valves were open since i went 3/4 of a turn without knowing what lifters were in the motor. Car wouldn't start until i set them all at a 1/4 turn.
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