RTV blue.

 

Here is the post with the reccomended fixes:


There are 2 areas that need attention.
1. The overflow bottle has a small hole in the top that draws in muddy water when the engine is cooled, as it would be going through a mud hole. This contaminates the coolant and will in time damage the water pump seal.
The Fix
Find a piece of clear Tygon (clear plastic) tubing of no more than 1/4", you will also need to find/make a hose connector that will fit snugly into the tubing.
Drill the out the hole large enough to insert the hose connector and fix it in place (no leaks) then attach the Tygon tubing to it and run the other end up to the air intake tube and hold in place with a tie wrap.
2. (Most important) The main reason the water pump seal fails is contamination from muddy water entering the weep hole under the seal. Muddy water has direct access to the seal via this hole.
The Fix
Find a piece of 1/4" metal tubing (I used stainless steel) about 1" long and about 2 foot of 1/4" Tygon (plastic) tubing.
You will need to taper one end of the metal tubing for approx 1/4" so that it fit's into the weep hole. With a little 5 min epoxy applied to the tapered end, place the tapered end into the weep hole and with a small hammer gently tap into place until snug. Allowing 15 mins for the epoxy to cure properly, slip one end of the Tygon tubing on to the newly made hose connector and run the other end up behind the engine to the frame. Tie wrap at 4 to 6" higher than the weep hole and the let the end hang down at a convenient location.
Most automotive parts stores carry clear plastic tubing and a variety of connectors that can be adapted to do the job.





Waterpump modification