Originally Posted by Rocky
There was always a gap to increase cooling. Lets see a photo of yours.
mine has a gap of about 3/4"
my old 110 ('84) had a rubber/plastic strip that was riveted to the underside of the bonnet. Have no idea if this was aftermarket, but the gap was tighter on that truck than on my current truck.
I thought about sealing it with some type of compressable rubber gasket and never considered adjusting the bonnet or spring itself. I came to the same conclusion that it allows airflow and the heat to escape/vent through the gap, so why mess with it (although I have never had a problem with my 300Tdi getting even close to hot)