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Icky... What are we looking at? The water inlet to the water pump? If so, the whole block is likely full of that crap. Maybe stored with some non-compatible mix of coolants combined with hi-mineral tap water??
Please post pictures of the coolant passages when the heads come off...
More pics of the thermostat housing and the rad return. The car sat for 10 years, at some point during that time the rad leaked out. When I drained the block the coolant looked ok, no particles in it etc.
From what I just found with a little googling, you'll want to run hot water with citric acid through the engine. Not unless or until it runs, of course. Or is there such a thing as a "hot flushing machine"?
Just clicked on your website for the first time - looks like a promising and exciting enterprise!
Oh absolutely replace the gaskets. Hopefully the heads surfaces are not too bad because they were dry.
Yes, gaskets are on order. Hopefully the heads and surfaces are ok.
Edit. I just measured the coolant that came out, only about 6L. And since I had added coolant the actual amount in the block was less. In the end doesn't make a difference but thought I would mention.
Last edited by Adamant1971; 01-24-2016 at 01:37 PM.
intially I thought so, but had forgotten that I had put some coolant in it. So who knows. Even still, on this car the heads should come off, I'm doing everything else.