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#1
IP: 69.250.109.188
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Cleaning a bare block: acid in cylinders?
I have my block stripped bare and am trying to figure the best way to clean it, worst need being the cooling passages. If I use some sort of acid bath, could it damage the cylinder walls? I have no need to do anything with the cylinders, but since everything is stripped off the block I can't exactly "flush" the passages alone since there are openings everywhere.
Is there a standard approach at this stage? Thanks for any advice! |
#2
IP: 67.234.39.221
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IIRC. I used a pressure washer after a lot of poking and brushing of the water passages. Had to quickly oil everything to stop flash rusting.
Dan S/V Marian Claire |
#3
IP: 32.211.28.40
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When you clean the passages, pay attention to the small ones in the top of the block. These tend to scale up with raw water cooled engines. A drill bit or a diamond burr in a Dremel tool are good weapons. The passages near the valves don't go straight but have a dogleg in them. Save the acid flush for after things are back together.
This is also a good time to install studs for the cover plate into the water jacket. The original bolts are a known source of leaks. |
#4
IP: 67.169.215.221
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A sturdy coat hanger and lot of poking in the corners works well for round the cylinder and passages. I also use these mounted int a drill to get into nooks and crannies.
https://www.amazon.com/HTS-101G5-Bri...6006627&sr=8-7 A regular screwdriver can be good for the edges of the passageways. Also, the most scale I got out of the head was when I replaced the core/freeze plugs. This was after using all the above tools. I was simply astounded as how much extra scale came out after driving in the new plugs.
__________________
Thanks, Ron Portland, OR |
The Following User Says Thank You to ronstory For This Useful Post: | ||
Surcouf (03-18-2021) |
#5
IP: 69.250.109.188
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Thanks everyone. I'll hold off on the acid for now.
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