Should I replace them with new bolts or switch to studs and nuts?
I don't think you can switch. Some of the head bolts are reusable. When I replaced my 1st gen head a few years ago the Mitsubishi dealer could still get them so I went with new.
I don't think you can switch. Some of the head bolts are reusable. When I replaced my 1st gen head a few years ago the Mitsubishi dealer could still get them so I went with new.
Companies like ARP will make them but they are not going to be cheap. A new member had an issue with finding the right head bolts for their 4G64 and ended up sourcing the correct ones for their engine from a forklift application.
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