Exhaust Manifold StudsThe ones that are not rotted too bad, take out with a socket. The stud usually comes with.
The ones that the nuts are rotted on, best to use a "twist" socket: https://www.amazon.com/Ken-Tool-30109-13-Piece-Twist-Socket/dp/B00C3IFM5K If you can't get them off, like Twintornados said, use a blue wrench, but then you have to wait for them to cool which EATS time.
Broken studs that are above the surface use a small twist socket if it will bite OR a stud remover like these: http://corporate.cornwelltools.com/webcat/products/CBS4MSRIS-%2d-4-Piece-Metric-Stud-R%2d-I-Set.html
IF they are broken off below the surface, a MIG or TIG to weld a nut/washer on is easiest and fastest. Drilling takes WAAAAY too long, goes through bits like mad, hard to access and generally SUCKS. I have seen a lot of shadetrees hit coolant passages trying to DIY, or had to helicoil when the drill got off of center, or worst of all, broke extractor off in stud, which is a whole new level of "OH $#!+!!!".
If you feel you JUST GOTTA drill them, https://www.lislecorp.com/specialty-tools/manifold-drill-template-fordFri, 05 Jun 2020 22:43:37 +0000
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