[RawhideKid]

Originally Posted by wjeiler

So RawHideKid, you recommend removing the radiator for the flush? If so, how to do you typically address any of the sludge that may be in the water jacket?

Good question, since you have the radiator off you can plug the lower hose and fill up the engine. Once you soak the engine, you can use a pressure washer or a steam cleaner or a pool/sump pump and flush from the top down. The trick is getting the crud broke loose to get it flushed out.

The reason I do not use vinegar in the engine is because even if you flush that out with baking soda, there can still be enough left to eat at the block, and it WILL continue to chew on the iron.

Remember to save the initial release of the evapo-rust as it can be used over and over again.

There have been plenty of discussions and pictures of items used to do this.

The last time I had the head off, I even went so far as to use a bore brush to sweep out the rear areas around #3 and #4 cylinders and use a magnet to pull out the crud. That proved worthwhile netting me a lot more rust flakes than I would have imagined.