Hot tank didn't clean water jackets, and cylinder rust.

[Firewind]

So I had my block hot tanked last week, and I just got it back. Apparently they cannot get the water jackets full cleaned they said. There appears to be rust like deposits in the water jackets still, and they recommend having the engine "baked" and they'd re-hot tank it again afterwords.

Anyone ever had this problem?

Here's a picture of the block



If you look at the water jacket holes you'll notice a brownish coloring inside some of them. It almost looks like a surface rust.

Also I have cylinder rust on the cylinder walls as well, and I was hoping the hot tanking process would of had taken care of this a bit, but it didn't. There seems to be one spot that is worse then the others. I took a picture of it. It's about 2 and 1/2 inches down the cylinder wall. I have no tools to measure the walls yet... Any thoughts?



So is this block worth trying to get ready for a car and project I am already near max budget for, or should I take a part the other KA24DE block I have, that I know runs, but has a blown main seal and slightly lowered compression in all cylinders? (135-ish across all 4 cylinders)

[USMCgetsome]

sounds like bull-hit to me. Ive never seen a motor look soo bad after its been hot tanked. call another shop and ask them

[liquid_cool]

dude..they dint tank your block man...your block after tanking would have a whitish aperence..and NO oil on it..they screwed ya man..use onother shop..that one is crafty.

[Firewind]

You should of had seen it before I have it to him... The oil you are seeing there is from the oil the put in on the cylinder walls to keep them from flash rusting over again.

The guy who did it for me is a friend really, basically did it for free. He hot tanked it in his shop class at college. The teacher was saying it'd need to be baked to get it fully cleaned in the water jackets.

Also a little more detail on the rust line I have in the picture. It feels like almost an indentation. So I am guessing I will need to bore this block out to a larger size. :/