Head studs
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Word is fire ringing is to cut a groove in head and block in some cases and installing wire to replace the compression ring on the head gasket (which requires said fire ring gasket because compression rings are removed from it) and oringing is cutting a groove in the head and sometimes block and using a traditional head gasket. The idea of oringing is to get the compression ring of the gasket to fit in the grooves and provide a better seal whereas fire ring You replace it with separate parts to for a compression ring.
Due to slang/lingo you'll hear them interchanged for one or the other when said but that is typically what I've seen to be the standard for each term when used correctly. Kinda like twins and compounds. Twins is often used when compounds would be the proper term if your that nit picky.
Due to slang/lingo you'll hear them interchanged for one or the other when said but that is typically what I've seen to be the standard for each term when used correctly. Kinda like twins and compounds. Twins is often used when compounds would be the proper term if your that nit picky.