cleaning water passages in head and block

The 4A, 4AB, 4AC, 4AD cars, including the SM 1500 Roadster and SMX
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mistercmo
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Joined: Mon Jan 04, 2010 12:45 am
First Name: Charles

cleaning water passages in head and block

Post by mistercmo »

I was about to start a "homespun" process of cleaning out the water passages in the block and cylinder head. I've collected all of my old gun cleaning brushes and thought I'd chip away as best I could with brush, thin steel rods, compressed air etc. Any suggestions?
TIA,
Charlie
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mikeyr
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Re: cleaning water passages in head and block

Post by mikeyr »

Think you have it down.

Not much else to say, that stuff can really build up quite thick so it can take a while to get all out. Best way is hot tank but there is a reason we homeowners don't have hot tanks in our backyards.
Mike Rambour. Site Administrator
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Paul Bouchard
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Re: cleaning water passages in head and block

Post by Paul Bouchard »

Hi Charlie,

I am with Mike... a good dunking in a hot tank is, for me, the best bet. Otherwise you will be endlessly chipping away. Nice thing too is that it takes off all the paint and leaves the surface ready for painting.

One thing though is take off any bushes, bushings, etc as they may be affected.

Paul
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Mark Thompson
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Re: cleaning water passages in head and block

Post by Mark Thompson »

Charlie,
When I cleaned the water passages in my 4AD block, I used 1/4 " copper tubing and water pressure to blast out the rust & sediment. It was messy but effective. Good Luck.

Mark Thompson
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