I've recently been preparing a block for an engine build, born out of a bit of laziness and a need to discover or use new tricks I did it this way.....
It started off like this, one old second hand engine:
So I stripped it down completely, core plugs and all, cleaned the worst off and stuck it in the dishwasher on a hot wash.....
It came out really clean, but covered inside and out with surface rust, not heavy at all - the kind you can wipe off with your fingers, I also wanted to get some of the rust off the internal water passages, it was time for another experiment....
First I put some paint stripper on the remaining paint to remove it.
Thanks to Axa in another thread I bought some Bilt Hamber Deox-C, I got the powder you mix with water. I also got a used water tank and added the Deox with some warm water, apparently it dissolves easier and also does its job better.
I got some spare insulation and wrapped it up, also borrowed some expanded polystyrene from a skip and put it on top:
I left it in for a few days, lifting it out once a day to brush off any excess rust it was struggling with. Amazingly it stayed warm in my freezing garage for over 24hrs!
Finally it looks like this:
I put some other bits in too:
Pretty good for almost zero hard work eh?
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