Join Date: Dec 2012
Location: Gastonia, NC - Born & raised in Connecticut - 31 years
Mentioned: 1 Post(s)
Tagged: 1 Thread(s)
Quoted: 361 Post(s)
Recontouring the divider plate is not something I have heard, but might be more about getting the proper clearance between the plate and the water pump impeller. If the gap is too large, the pump does not work as efficiently.
With the problems you are having, I might think that the surface that the water pump bolts to is warped or damaged. You will need to make sure the mounting surface is flat and even. If there is any pitting, I use JB Weld to fill the pits in after thoroughly cleaning the surface. Then I follow this up with a large file I have which is about 10"-12" long and gently go over the surface keeping the file placed flat on two opposing sides, not just one side, so you get a more even and flat cut. I move the file around in different directions to even up the entire surface.
The yellow gasket adhesive works good in keeping the gasket from moving and slipping out on you. Some of these gaskets are actually too thin or "slick" and can squeeze out when torque down - had that experience once. Makes sure the mating surfaces are roughed up with a little sandpaper. If they are painted, oily, or too slick, the gasket may not hold.
I like to use a product called "Indian Shellac." Old school stuff, but it works pretty good. I believe NAPA is where I got mine last time. Use it on the gasket/flat surfaces only. Do not get the stuff on the bolt threads. It is like honey and takes a little time to set-up, but when it cures, it can glue/lock a bolt in place and you can snap it off when you go to take it out the next time.