Thread: Black bonnets

V8 engine bay temp can exceed 90 degrees C so at "critical times" when ambient temperature is high.....during long distance wading....deep sand driving etc etc so it is more a case of the bonnet trying to re-radiate that large heat load back into the atmosphere. It is not the case of a more reflective lighter colour bonnet dealing with comparatively lesser heat load of the sun than a non reflective a black bonnet.

My matt black painted bonnet is there to deal with the reflection from roof mounted lights with little or no impact upon engine bay temp. However there is a auto switched extraction fan sitting under a bonnet scoop that helps deal with high engine bay temps in the circumstances mentioned above.