Quote:
Originally Posted by Brentwood Bob
Chris, when you remove the head look at the back of the block. Behind Number 4 there might be some blockage. I used a probe and air to clear it. Put rags in the cylinders first.
Bob
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I have a magnet on a long flexible shaft. Also just a long flexible shaft. I put the shaft in a reversible drill motor and go down through all the water jackets in the block where rust wants to settle. The back ones will be the worst. After a few licks in both directions with the drill motor run the magnet down and you will be surprised at how much rust is on the magnet.
Alternate the drill motor/shaft and the magnet until you have it all cleaned out or you are tired of doing it. You can get to all the water jackets from the top of the block. Also a good idea to remove the water inlet casting and go in through there. Periodically blow shop air through the jackets. The head usually does not clog with rust, but it is easy enough to clean it the same way.
Once the head is back on I attach some fixtures I made up that will connect two garden hoses at the inlet and outlet castings. I then connect it to the hot water tap for the washing machine and let it flush until clean water comes out. I then reverse the hoses at the inlet and outlet and flush it more. This is done with the radiator off.
Then I connect my fixtures to the radiator and repeat the procedure.
This does a good job of eliminating rust from the block. The radiator however may have to be taken to a radiator shop and have the top and bottom tanks taken off and all the tubes rodded out and flushed.
Tom Endy