Thread: block cleaning
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Old 06-08-2019, 08:48 AM   #6
J and M Machine
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Join Date: Oct 2010
Location: 40 Mt.Vickery Rd. Southborough,MA 508-460-0733
Posts: 352
Default Re: block cleaning

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Quote:
Originally Posted by L-head View Post
I can have my A block baked and steel shot blasted by a local machine shop. My understanding is that it will be as clean as it can be. Would it be prudent to melt the babbit out before this is done and is there any chance of damaging the block by this?
We do this to every engine that will need a rebuild.
It's the only way to get it cleaned,rather than acid dipping or hot tanking or jet wash. The blocks just don't get cleaned throughly, "washing or dipping, " there's always something left behind.
Thermal cleaning/shot blasting removes all the debris along with majority of rust on/in block along with cleaning water jackets.

Proven that the blocks come out lighter after cleaning.

You don't have to melt the babbit out prior to thermal cleaning as it will melt out in the machine. Unless you want to use the old babbitt to make fishing sinkers.
http://www.jandm-machine.com/cleaning.html
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