Whomever installed the data plate drilled through to the water jacket and the little brass rivets were not water tight!
You got to wonder, what mechanic would think they could stop coolant leaking out of a hole drilled into the coolant jacket with a brass rivet. The cycle of heating and cooling on dissimilar alloys is going to eventually shrink that rivet to the point that it leaks.
Taping and installing screws was a great way to fix the issue. Nice fix!
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum
