Originally Posted by RallyBob
I remove them on every head I build. Access to clean the oil feed passage to the head.
I then tap them oversize to 1/8" NPT, and put in a pipe plug.
|
Thanks Bob. Is it a steel or aluminum plug? Do you drill it out, or extract it some other way such as drilling and tapping in a pulling bolt? And finally, how long a plug is it, and does the replacement plug have to reach in a certain depth, or simply plug the hole?