Originally Posted by snobdds

The proper way to change a timing chain is to remove the head, repalce timing components, replace the head gasket and seal the top of the timing cover to the head. Then there are no leaks and you don't have to worry about your head gasket until your chain needs replaced again. Also, this way prevents one from having to go back in and replacing the head gasket at a later date. Then you might as well do your timing chain again since your already in there. See the cycle here. To not pull the head, the mechanic has to squeeze the timing cover back in and it never gets a good seal. A good mechanic will only quote the job this way, FYI.

I guess watch for leaks...