Coolant in cylinders

[Igosplut]

Originally Posted by big gear head

I always check the timing mark on a engine that I'm building using a piston stop before putting the heads on. I never trust it until I verify that it's correct. I even verify TDC on a running engine that someone brings to me for tuning using a piston stop in the spark plug hole.

I do the same, I think that's one of the most overlooked things on an engine.