| RE: Why do rocker panels rot? You answered your own question - Water.
Rockers on all cars from our MBs to a Ford Aerostar have water that gets locked in the rocker and eats it to death...
Our cars have "oneway" water drains, but water still gets in - cracks, splits, leaks, etc.. And then road dirt and junk gets in there and starts clogging it up and holding water, salt, mud, moisture, ect...
Rott - our cars are coated in a thick rubber coating, that holds all the evils to the steel and rotts it out bad like cancer.
to prevent it there are a few things...
1)early on make sure your water drains are clean
2)you can spray a oil,wax,sealer in the rockers much like the factory did (its a green color)
3)cut and weld/glue in patches (i recommend painting it, not resealing it with cheap undercoating)
ect..
Jake
1980 w123 230
mine were GONE |