Knocking under acceleration

[msgrape]

Replaced timing chain/rod bearings/flushed engine w/sea foam....knocking nose still on passenger side under acceleration, not while ideling. Quite while engine is cold..increases once it hits operating temp. New to DOHC ..Can I run engine w/cover off??? Any other suggestions?? Thanks

[IMkenNY]

Perhaps crankshaft suffered damage when the engine was low on oil, did you measure the rod and main bearing clearances with plastigage when the oil pan was off?

[msgrape]

No, unfortunately we did not take time to measure. Just physically inspected, but knock is not a constant...more like a fluterring, not a steady that i have encountered before with rod bearings.....nothing at idle, and if you increase rpms slowly, not nearly as pronounced.....and with cold engine, not really any noise for probably 5 minutes or running.....

[msgrape]

When you increase RPM on warm engine you can feel tapping on cam cover.