Is the head gasket for a 82-85 Accord easy to replace?

 

If you don't mind all the vacuum hoses, and can deal with them by carefully labelling and removing them, or just unbolting the carb and moving it out of the way, then yes. If you can just undo the intake and exhaust manifolds and leave them mostly connected, that would be the safest way, but it can be difficult with the AS and EGR valve tubes connecting the exhaust and intake manifolds, and being routed between all the other ****.