Replace Studs with Stainless?
[Response: John B ] If you break one stud in the process, you might as well replace them all. Almost any stainless alloy is going to be weaker than a good steel alloy…it’s only advantage is it’s supposed to be proof against corrosion. But you’re not a marine environment, so I’d go with stock steel studs. Helicoil the heads if you must, but you’ll get higher clamping forces with the stock studs. [Tip from John Sargent] Volvo has a service bulletin to replace the exhaust manifold studs with the new part number. The new ones are supposed to be better, and for about $2.30 each, not a large expense. Note that turbo studs may differ from non-turbo studs: make sure of your part numbers. Use of Thread Adhesives. [Inquiry:] Several of the exhaust studs unscrewed from the head and will need to be reinstalled. Since this is an aluminum head should I use antiseize or some Loctite? Will anything take that heat anyway? [Response: Tom Irwin] I’d get new studs and re-tap the holes. Then I’d use a hi
