Quote:
Originally Posted by surfsama
Sorry if this was already covered but after watching the video it seems like the knocking taps are slower than the crankshaft rotational speed.
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I would tend to agree with that. Does this engine have a mechanical fuel pump? If it does, take it off and run the engine for 30 seconds or so until the carb runs out of gas and listen for the knock. Seems the valve train has already been accounted for. If it doesn't have a mechanical pump, I am out of ideas. It was likely run on the Dyno with an electric pump only.