I have water in the rear break drum any tips ?

 

meh, that's very common for Honda's with drum brakes, they are "triple sealed" as they say, but it seems that water always finds
a way in, but the "sealing" keeps if from coming back out!

You can take it apart and drain the water, put lube on all the seals and put it back together, but you're probably wasting your time. a few hard stops should heat the brakes up enough to evaporate some of the water, but not all of it will come out.

You can see if anybody makes one of those disc brake conversion kits, but i think they only make them for front brakes.

other than that, i dont know what to say, other than dont worry about it and hope your brakes dont seize

 

Good, god, the water wont evaporate back out, and they will definantly seize if you leave it. Disc brake swap is not necesary either if you take care of your drums.

First inspect the vent line comming from the back of the drum. If its missing, cracked or torn there's your leak. Also, the back is a little different than the front as there isnt a large grease seal on the outside of the drum. Instead there is a metal cover that covers the brake drum, there is a large o-ring seal around the outside edge, and a smaller grease seal where the hub goes in. When you take it apart (remove cotter pin, large 30mm castle nut, haul out the hub, remove all the bolts around the edge) inspect the 2 seals for cracks or wear. You can replace these or just regrease the inside one and silicone the outside one when you reassemble it.

Take off the drum and clean the inside with brake clean before you reassemble.