dark grey cube in water jacket

Joined
Apr 15, 2005
Messages
240
dark grey cube approximately 1x1 in. in water passage
of 3FE block, after machine shop did a bore an hone
Is it some type of block sealer? it’s like a dry clay.

The only way it could have gotten where it is, is through
the freeze plug hole before the new plug was set.
 

zebrabeefj40

 
 
Joined
Feb 19, 2004
Messages
3,322
Location
Pepperell MA
You are correct. It is block sealer. I found out this is common practice while I worked for an automotive machine shop. It is to insure there are no leaks and therefore no unhappy customers complaining about said leaks.

HTH,
Nick Jennings
 
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