NG wrote:
some one said this is not a good idea???
i have an old mini k, it has a breather to the side that i need for my sc12 set up
now when you chrome, im told something to do with the suff in side it? it strips it? black looking stuff?????
any idea???
will it be a problem??
thanks

The plater will clean whatever need to be cleaned prior to plating in nasty chemicals so I wouldn't worry about the black build up on the inside of the unit (although the quote might go up if it is really ordinary).
Did some of those rocker covers with breathers have steel wool stuffed inside a cannister? The rocker covers with the large breather mounted along the rear side of the top? If it does, it might be disintergrated to little lumps by the acid process and need to be cleaned out before and replaced after.
I wouldn't worry about heat retention, the mini is a water cooled lump. I think it will be whatever temperature the water jacket is plus a small margin no matter what the rocker cover is..