S.A Gear Timing Chain and Sprocket

Hhere is some pics I found. First is a 7 year old install street/strip, barely any wear. Second is after a few dyno runs! One mans theory was the cheaper double roller chains have less surface finished links and can act like a chain saw on the nylon. His insurance was to take a wire brush (or a sander?) and go over the outside of the chain to knock down any stamping burrs. You would surely feel these if you inspect the new chain prior to installing it, just be careful when you run your bare finger over it! That second chain must have had some blades on it or no oil as that is just gnarly! (second one look almost looks like post heat damage as I find it hard for those visible nuggets to survive a chain traveling over them at ~50 ft/sec)
chaintensior.jpgtension.jpg

Small block guys Timing Chain tensioner !!??? | Unlawfl's Race & Engine Tech | Moparts Forums