So when I got this basic L24, I was just gonna degrease it and clean it up and see if it runs ok.
But since I went to the effort of re-coring my radiator and since I'll fit a new water pump, I figured I should probably remove the welch plugs and check if anything is in there. Well the photos will speak for themselves, basically there was years of crud built up in there. I used a pressure washer to blast it out and then a screw driver to chip away any loose rust / crud. I pulled all the plugs, the 1 in the rear of the head and block and the 7 in the sides.
This stuff can't help with cooling of the cylinders and I basically blasted it all until no more brown crud came out and it was mostly clear.
I have vapour blasted parts, yellow cad plated parts to go on and dress it up. I am hoping compression is good and it will be a good little "runner" until I can get around to a full proper build for this car. (I've got the E31 head reconditioned so far, but need to do the block still).
I'll need to order some Welch plugs.
I was inspired after watching this Youtuber pull and replace his welch plugs on his Sigma engine Saw all the dust that came out..