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Re: Exhaust Manifold Studs
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Posted by Doug W [Email] (#2371) [Profile/Gallery] (more from Doug W) on Fri, 29 Dec 2017 21:02:26 Share Post by Email
In Reply to: Re: Exhaust Manifold Studs, saabsince 93b [Profile/Gallery] , Fri, 29 Dec 2017 18:35:52
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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.



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