I need to replace the head gasket on my daughter's '91 240. I have a head in my basement that I was going to install but I want to get it checked out first. The head has around 210k miles on it already and I want to have it set up to last another 100k miles. It was running fine when pulled out of service with the exception of a ticking noise due to one of the valves having its lash way out of spec (by an order of magnitude).
I'm looking for advice on what sort of prep I should do for this head.
Also, can anyone recommend a decent machine shop in NW suburbs of Chicago that works on these engines?
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