It is a never rebuilt original 220hp block with 63,000 original miles. Heads are redone with hardened seats. No knock when the engine is cold. As it warms up it starts a single medium loud knock. Not as loud as a rod or main sounds. No decrease in power. But too annoying to ignore.
I am thinking to pull the valve covers and see if I can tell anything cold or also running. I am hoping it is just a bad hyd. valve lifter which I believe them to be originals. Any help on how to proceed is appreciated!
PS. It is louder when winding down than reving up
I am thinking to pull the valve covers and see if I can tell anything cold or also running. I am hoping it is just a bad hyd. valve lifter which I believe them to be originals. Any help on how to proceed is appreciated!
PS. It is louder when winding down than reving up