Removing rusty sludge from waterways

  1. Established Member Joined: Mar 2011 Birmingham Posts: 2148 Rover BRM, Rover 800 Coupe, Mk6 golf.
    #1
    Hi all

    I'm in the middle of cleaning up and half rebuilding an engine. Generally it's in fantastic condition, however it looks like the previous owner was running it on water.
    The water ways have quite a thick rusty sludge covering them... What's the best way to remove this?
    A few people have said to leave it and just change the coolant after it's in the car, I'd rather not do this as I don't want to clog up a new radiator etc...

    Cheers guys!
  2. Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.
    #2
    Spray degreaser(gunk)into all the channels then a hose through all the channels,finally if you have an air line use that to dry it all.
  3. Established Member Joined: Mar 2011 Birmingham Posts: 2148 Rover BRM, Rover 800 Coupe, Mk6 golf.
    #3
    I was thing of that, you sure it won't disrupt anything? I might put the sump back on before I try it though!