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Piston Slap: Heading off broken bolts?
My 1971 Buick GS 350 four-speed has a 49-year-old original, never-touched engine but needs an exhaust system. I would like to put headers on it with a completely new aluminized system and Walker turbo mufflers ...
Sadly, there’s no magic trick to remove frozen exhaust manifold bolts. Your concerns are valid and likely to come to fruition. I’ve had the same problem removing bolts from an ancient T3 turbocharger: The only option was to light it up nice and hot with a torch and hope it didn’t break. If/when it does break, try a bolt extractor on what’s left. When all else fails, pay a machine shop for their expertise ...
I'm baffled by the originality fetish, particularly in view of the apparent fact this Buick is going nowhere. 49 years of ownership? Those needle **bleep** valves and exhaust logs effectively choked those engines. Surely with the explosion of the hobby and aftermarket accoutrements an alternative exists? I guess my bitterness has risen to the fore due to a ghastly experience with a '72 Cutlass ragtop. Time for my meds......