Inside and out

The heat shield on the bottom of the intake manifold was hiding a lot of grime that needed to be cleaned out. Any of this could possibly have ruined a freshly rebuilt engine.

The heat shield was riveted on, so those rivets had to be ground off.

Once the heat shield was separated from the manifold, both were run through the media-blast cabinet.

The results look so much better.

Rather than drilling out the rivets and taking the risk of having the new rivets not hold well, the heat shield was welded to the remains of the old rivets, making this a simpler and more secure repair.

Everything was pickled to prevent surface rust and this will be set aside for reassembly after the engine is put back together.