I have read over the forums here & other places. I am not able to get a real diagnosis.
I have a tapping that is there right at start, when revved or under power driving.
I have tried different weight oils, MMO, Seafoam (Oil & intake).
I was told it's a stroker, but only have a recipt for a "Rebuild".
This all started after the electric fan quit on me & the engine overheated pretty bad.
Since then, it has had this tapping that does not change tone vs RPM.
I have worked with metal for decades & I seem to hear a more tinny sound, than a "Thunky" sound.
Took the valve cover off, found the bolts have been overtightened, as the bridges were twisted. For the moment, I have straightened them all out & properly torqued them with washers & all are straight.
Tried the stethoscope probing around & cannot define the location.
Also, a rebuilt distributor was installed, as the original was wobbly.
I am hoping that liftersand/or rockers/pivots/bridges/pushrods would fix it, but not sure it's worth throwing parts at it just to have a bad wrist pin or piston.
I have read so many forums that I am a bit overwhelmed.
Thank you for any assistance & help.
Ed
I have a tapping that is there right at start, when revved or under power driving.
I have tried different weight oils, MMO, Seafoam (Oil & intake).
I was told it's a stroker, but only have a recipt for a "Rebuild".
This all started after the electric fan quit on me & the engine overheated pretty bad.
Since then, it has had this tapping that does not change tone vs RPM.
I have worked with metal for decades & I seem to hear a more tinny sound, than a "Thunky" sound.
Took the valve cover off, found the bolts have been overtightened, as the bridges were twisted. For the moment, I have straightened them all out & properly torqued them with washers & all are straight.
Tried the stethoscope probing around & cannot define the location.
Also, a rebuilt distributor was installed, as the original was wobbly.
I am hoping that liftersand/or rockers/pivots/bridges/pushrods would fix it, but not sure it's worth throwing parts at it just to have a bad wrist pin or piston.
I have read so many forums that I am a bit overwhelmed.
Thank you for any assistance & help.
Ed