Re: Exhaust Manifold Studs - Saabnet.com Bulletin Board
Yes. They put bolts in and not studs. I've seen bolts used before on air cooled engines. Mufflers on old bugs incorporated the headers on the rear two cylinders and were affixed with bolts. I've never seen a water cooled engine use bolts for header retention. Why can't manufacturers use alloys that won't fail in high heat situations; e.g. Inconel? McLaren uses Inconel for their exhausts, and newer 'Vettes use Titanium.
Maybe broken studs are a symptom of another issue, like a tired motor mount or aging / sagging exhaust.
posted by 75.38.243...
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