Riveted up the left side of the rear fwd turtle back skin. Continued tear down of Corvair engine. Not much headway today. Soaked it with WD and tried woking some of it. Did loosen up connecting rod cap bolts. those I could get at, not being able to tiurn crank. Loosened up some of the block bolts. The rings are really frozen in the cylinder barrels and the barrels are frozen in the block