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Reviews (1)

13 December 2018
Indexing rings
Bought tapered seat index rings in hopes of adapting flat seated plugs to a tapered seat cylinder head. I have a abundance of flat seat plugs from one of my old nitrous cars that i was hoping to use with my new car, but instructions said specifically for tapered seat plugs only. Great product for indexing though, just alot of in and out until you get it exact after torqued down. Dont know if this helps, but all the old timers swear by this procedure for maximum efficiency of spark and more accurate AFR's with less fluctuation. Its one more variable eliminated while tuning a engine, especially on nitrous applications. Over all alot of time for a little gain?, but every little bit
helps on the race track