Re: Drum Brake Modification
if you use the flush kits that are available, you can use a hole that's already in the backing plate. NO need to drill the drum.
If you really want them to last, when you put on new backing plates with all the hardware, take the pushrod out of the wheel cyl, and pack synthetic brake caliper grease under the rubber boot. If you really want to go all the way, seal the edge of the boot all the way around and where the pushrod enters it with 3m 4200. Then grease up the adjuster threads with OMC triple guard grease. If you keep water out of where the piston is, and fill that area with grease, and grease up the adjuster threads, you have eliminated the 2 main reasons why drum brakes fail and lock up....
the flush kits to clean out the salt water but do not help with the 2 areas above that I mentioned....