Quote:
Originally Posted by tadpole rider
Here are a couple of shots.let me know if you need other images.

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Ok.
Cowl looks good. I imagine you have confirmed that teh duct seals well to teh radiator.
Next thing I would check is for some type of blockage (as you mentioned).
Confirm that none of the shipping plugs were accidentally left in the radiator nipples or the water pump or expansion tank on the engine.
This might be a long shot because it should also cause a rather rapid heat up of CHT's just idling on the ground, but it needs to be ruled out.