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Old 11-16-2008
Randy Dupree's Avatar
Randy Dupree Randy Dupree is offline
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Join Date: Dec 2007
Location: Port St Joe,Fl
Posts: 36,254

most trucks don't have anything on the bottom of the stacks,but on a truck the bottom of the stack is way below the engine,it would take alot of water to fill it up.
one thing you want to be sure of,don't park or stand near a non-running truck right after a rain storm,when they start it up everything nearby gets a bath of sooty water!

and,some trucks do have a sump and a drain on the bottom of the stack.
the sump doubles as a mount that holds up the stack,basicly its a "cup" welded to the bottom of the elbow,the cup has a nipple welded to the bottom,the nipple goes into a rubber mount and that supports the stack from the bottom.
the center of the nipple has a small drain hole in it.
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Randy Dupree
2000 LXI 43
Port St Joe Fl.
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