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Rod-knock can be many things or theories. Rod-knock and knocking 2 different things. Although if knock sensor not working, dentonation can cause rod knock or blow engine. Rod-knock mechanically can be caused by flywheel cracked or contacting splash shield, loose or broken balancer or bore clearance, bent connecting rod, piston 180 degrees off, loose tourque converter bolts, excessive main bearing, rod bearing, crankshaft end play clearance, improper oil viscosity, hydrolic lifter bleed down. Sounds like mild to severe knock occuring when accelerating so you get sharp metallic sound when throttle opening. I rod-knocked my first race engine 3 years ago and first two blocks I drove car. I was so excited to run car hard and had afc at time. I richened wot and raced down block of street. That is why I dyno tune seriously now and get a/f mixture perfect. I have wideband o2 sensor in car and use wideband on dyno. Only thing you can do is use engine until it fails, unless you want to take apart and have professional correct mechaniclly your problem. Either way going to cost you money.
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