Re: What did they do. ???

Posted by Opa A on January 25, 2005 at 11:58:21 from (161.184.46.220):

In Reply to: What did they do. ??? posted by MagMan on January 25, 2005 at 11:31:11:

Hot tanking of castings will leave the metal with a brown tinge especially if their solution is a bit old, many shops will give the heads a quick bead blast to remove this, they don't bead blast blocks because it is too easy to have some left trapped in oil galleries, obvious what the blasting media would do to bearings if it got into them later. I usually wash the block using hot water with lots of dish soap. If you can get a long round bristled brush to go through the oil galleries, sometimes you'd be supprized at what is still in the galleries. Blow dry the whole block completely with compressed air. It will still have a brown tinge but paint will stick to it just fine. Hope this helps.
Note: good idea to run a brush through the cross drillings in the crankshaft also.

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