Replacing timing chain

Other brands of engines don't count! :p My Mazda has a tensioner that is a spring loaded ratchet type and I have had motors (Honda) that use oil pressure types too. This MP one is bone simple and the silent type chains are no slouches either with 6-7 chain plates between pins instead of 4 of a double roller. "...It (silent type chain) has large, non-roller links that engage the gear teeth. While more prone to chain stretch than a roller setup, this type of chain is stronger and lighter. That means it will last longer, which is a bonus in an OE-type or mild performance street engine that doesn’t have a large cam or excessive valve spring pressures that can induce damaging harmonic vibration..." Hamburger used to make a performance silent type chain (looong time ago) saying that double rollers were not necessary in a racing application.