Straight into the next job. The van runs hotter at motorway speeds but perfect at slower speeds or stationary. It's not the lack of air to the rad that's an issue.. it's getting it out the back of the rad that is the problem. When I made the rad cowling I wanted the fans to pull air through the rad and not round the sides, turns out that it needed flaps fitting.
Rather than remove the cowling (huge job due to the way the interior is fitted) I decided to rivet a panel to it after cutting the hole in the cowl.