Goodson Cold Crack Repair Kit for Cast Iron Heads - Engine Builder Magazine

The kit includes 100 genuine Irontite .235" x 15/16" threaded crack repair plugs plus the drill, reamer and two taps you'll need to insert them.

Ken's 1982 CM450e Vintage Honda Twins

Got Cracks? Here's How to Repair Them

Engine Builder, November 2013 by Babcox Media - Issuu

Get Into The Groove: Contain Combustion With O-Rings Or Fire Rings

Selecting Cylinder Honing Stones

Cylinder Head Rebuilding Tools

Cylinder Head Rebuilding Tools

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source - Aera