hey, im new here but there seems to be alot of good information.this is a good board. my problem is my 239 in a 49 f1 is blowing smoke out of the breather while running and and after shutting it off. Is this a stuck valve or ring? It also is smoking (blue)from the exhaust. I also picked up a mecury flathead for 15 dollars from a car. If i'm going to have to rebuild my ford anyways would you guys rebuild the merc and put itin(assuming the block is good) thanks for any info