I pulled a plug today which was seized. Tried to soak it in plusgas penetrating oil to free it up, but still pulled a bit of the alloy thread material with it... the plug hole is too deep in the head for me to tell how bad it is...
so what I’m thinking of doing but I’d really like a second opinion on is: 1. First run a tap through with plenty of grease to catch swarf and then see if new plug will torque up in the hole. If plug doesn’t strip the remains thread out then I’ll leave it in there after greasing it up with high temp grease. If it strips the thread then 2. Install a Time Sert (rather than a helicoil) bush.
i want to do the above without taking the head off if that’s feasible (was thinking of stuffing oily rag down into cylinder before any drilling cutting of 2. Then use compressed air or a vacuum poked down into cyclinder to get any remaining swarf out.)
so what I’m thinking of doing but I’d really like a second opinion on is: 1. First run a tap through with plenty of grease to catch swarf and then see if new plug will torque up in the hole. If plug doesn’t strip the remains thread out then I’ll leave it in there after greasing it up with high temp grease. If it strips the thread then 2. Install a Time Sert (rather than a helicoil) bush.
i want to do the above without taking the head off if that’s feasible (was thinking of stuffing oily rag down into cylinder before any drilling cutting of 2. Then use compressed air or a vacuum poked down into cyclinder to get any remaining swarf out.)