The car arrived on the hoist as a finished build — engine bay done, standalone loom in, coilovers and braided lines fitted. Everything above the floor pan was show-ready. Everything below it still carried decades of road film, and the owner wanted the two to match.
That is the awkward case for conventional cleaning. Pressure washing puts water through a modern loom, its connectors and freshly sealed seams. Degreaser runs down onto suspension bushes and brake components and has to be caught somewhere. Media blasting is impossible with the drivetrain, brakes and lines all still in place.
Dry ice sublimates. It hits the surface at −78 °C, shocks the contaminant layer loose, and turns straight back into gas. Connectors and open lines get masked, extraction sits under the car, and the only thing on the floor at the end is what came off it.
Strip road film and oil mist from the floors, subframes and drivetrain with the car fully assembled.
Keep the standalone loom, its connectors and the braided lines completely dry.
Clean the inner arches back to paint without touching the finish underneath.
Leave an underbody that matches the standard of the engine bay above it.
