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Old 09-22-2022, 09:40 PM   #6
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Join Date: Oct 2019
Location: Barrio Pablo Escobar, Colombia

Originally Posted by Dan View Post
Doing a little googling and ran across this. Dissimilar metals such as a titanium exhaust manifold bolt and the softer aluminum head do not work well together, especially when exposed to extreme heat, cold or road debris like salt. A chemical reaction takes place which essentially welds the two components together
Combine these two risks, and the situation can become extremely difficult when a gasket is being replaced and the titanium bolts on the exhaust manifold break due to their loss of strength and inability to back out of the threads in the aluminum head.>
muy interesante
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