A couple of years ago I decided to give the engine and bay a clean up. It was grubby.
So I removed the inlet manifolds and had them vapour blasted and added new badges. While they were away I cleaned as much as I could by hand. Its just a bit fiddly around all the bits and pieces to get it looking clean
I used Astonish engine degreasent and a Maguires engine dressing to give a final sheen.
Looks great. Massive improvement for fairly minimal outlay!