Can you reuse head bolts? Or why can't you? Thread Sealant For Head Bolts
When to Use Sealants on Threaded Plumbing Connections | This Old House Making watertight connections with This Old House plumbing and heating expert Richard Trethewey. (See below for a shopping I've used ARP thread sealant and Permatex high temp thread sealant with good results. threads in the block with a thread chase before ...