I am replacing the heads on my 2.1 and wondered if there were ever posts
related to using something other than the rubber gaskets. It seems like
after 120K the constant expansion and contraction being absorbed by these
rubber gaskets would eventually cause leaks but how bout the cracks. Do the
amc heads do better? Are the cracks related to metal fatigue or the gaskets
not providing a solid flat surface. I have heard about the electrolysis but
I think the real problem is that they start to leak because the seal goes
bad over time because rubber does not stay elastic.