The "trash" you found in there is the remains of the coolant that leaked from the distribution pipe seals and hoses. Under the right conditions it can eat right through. After cleaning out thourghly you could paint the "pockets" with Glyptal. It is a heavy paint type product used primaraly on electrical windings in motors and transformers. Custom engine builders coat the insides of engines and trasmisions with it to seal any pores in the castings, make it easier to clean, and to allow the oil to drip easier. You can get it in small quantities from Eastwood. Try eastwood.com The main thing is to find and fix EVERY leak, even the ones you can't see. If your coolant level goes down and you have to keep adding then you have a leak even if you don't see it on the floor. It leaks onto the top of the engine into the "pockets" and is boiled off so you never see the leak. The trash is the solid portion of the anti-freeze which is the additives. Before putting the intake manifold back on put the coolant system together and pressure test to 15 psi for 15 min to make sure there are NO leaks. If you aren't using the silicone hoses behind the water pump get the best hose clamps you can and really crank on them because you can't get in ther to retighten them later (better to use the silicone hoses, then you don't have to worry). Check out your radiater. Look carefully at the tank on the left side. ANY sign of green stains or white crust means it is getting ready to leak, the plastic tanks have been known to blow right off. Replace EVERY hose including the heater hoses. A leak in any will cause a loss of coolant with the result overheating the motor. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "ablemanse" <s.ableman@xxxx> wrote: > List, > > I took a look at the square pockets below the internal water pipe > and found mine completly full of packed trash. I cleaned it with soapy > water and vacuumed it out. It is badly pitted near the bottom and on > the side of the walls. What would be a good fix? How deep is the > casting on the side walls and the bottom? I thought of brazing a piece > of diamond plate on the top of the two pockets together,using the low > temp. aluminum brazing rod. Any comments would be helpful. > > Thanks, Steve