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240 titanium intake/exhaust manifold stud kit

Khrrck

Professional Amateur
Joined
Mar 11, 2015
Location
Beaverton, OR
Why do you want titanium? It's stronger per weight, yes - but since they aren't any larger than the stock steel, they'll be weaker. And the price is outrageous!
 

Dan

Fought Covid and won
Joined
Jun 26, 2002
Location
Superior, Montana
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.
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.>
 

VolvoLatAm

Member
Joined
Oct 4, 2019
Location
Barrio Pablo Escobar, Colombia
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.
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 :oogle:
 

Dan

Fought Covid and won
Joined
Jun 26, 2002
Location
Superior, Montana
Found this on a 911 forum
"We have made a batch of Grade 5 Titanium studs and some matching nuts.

These have about the same strength as a Grade 10.9 bolt and they will be difficult to break.

They have a 'dog point' on one end so they can be gently tightened into the head and then held in place with Loctite 266 which is a High Temperature thread locker.(this will be supplied with stud kits)

The opposite end of the stud is prepared with a 4mm AF socket head to allow tightening.

The threadlocker will also electrically insulate the threads and prevent bi-metallic corrosion."
 
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