Depends on who performs the repair and if the head needs resurfacing or replacing. Get estimates from trusted mechanics.
possibly blown head gasket
dont do it yourself because it is so easy to stuff up take t to a mechanic or sme one who speciallises in that model. Before you do anything at all, you should try Steel Seal. You may not have to change the gasket.
approx. 20 ftlbs, or 1/2 turn after gasket contacts head
replace the head gasket
How to change head gasket on a harley sportster motorcycle?
You can change the head gasket by removing the valve cover. Remove the gasket and clean the gasket surface. Put the new head gasket on the cleaned surface.
The 2002 Jeep Grand-Cherokee has 39.5 in. of front head room.
The 2008 Jeep Grand-Cherokee has 39.3 in. of rear head room.