I got a 1993 mighty max with 8-valve 4G64 engine. Vehicle has 190k miles. Currently I discovered the exhaust manifold studs are broken, the first one and the last one. Good thing is the remaining stud is still above the surface. Questions are:
1. How to do stud extraction? What kind of special are helpful?
2. Can I do stud extraction without taking of the head? Looks like there is plenty space if I take off exhaust manifold. Anybody ran into similar situation?
3. Where can i get high quality exhaust studs? I don't want this happen to me agian.
4. If I don't want to fix it now, what is the risk? The whole exhaust manifold fall off? I only use this truck as a spare vehicle. Very trip is short distance, usually less than 1 hour. I am thinking of rebuilding engine in 1-2 years. So if I can keep it the way it is now, that would be great.