Does anyone know the torque specs for the exhaust studs on the housing? Will using some nickel anti seize be wise to usre too

 

https://www.rx7club.com/search.php?d...ifold%20torque

When using lube, the the torque values need to be adjust downwards by a certain percentage. I did mine with nickel and just went right in the middle of the spec with no broken studs. I haven't started the car yet so... some more research might be needed on your end.

Perhaps someone could chime in on the nickel. There is one anti-seize that I know of with a higher temp rating. It has glass beads in it. Perhaps that is better with the super hot rotary exhaust.

 

Thanks for the reply. Just need to find out what lbs torque o should use on just the studs. I guess ill use the two nut method to torque it on the housing.

I also bought nickel anti seize Permatex it wasnt too ezpensive for two small tubes

 

Probably same as the exhaust pipe to manifold nut, which is 43-59 lb-ft.

 

I looked in my book and looks like 28-40 ft-lbs but for grade 2 or 3. Also dry



This other site has the same stud inconel size and they say
28ft lbs

 

My apologies for not understanding the post correctly.

Thanks to everyone else that contributed.correctly.

 

Finally got the studs torqued with anti seize nickel to 22 ft lbs
I was unable to remove one stud. It was so tight it broke the threads on one of the nut i was using. The two nut trick did not work.
might just leave it but im worried if I mess up the threads that i wont be able to easily remove it once installed in the car


the top left stud would not budge at all. I used a blue torch and used wax as well and nothing. I dont know it I should force it off.

 

I must have misunderstood your original question. I thought you were asking about the studs at the exhaust manifold flange where the exhaust pipe connects. Or, is this a new question?

Those are the rotor housing to exhaust manifold studs (Mazda p/n 0839-10-105). According to Atkins, those studs are M10x1.5mm by 48.9mm long (https://www.atkinsrotary.com/74-92-R...39-10-105.html). Regarding removing those studs, if the double nut method doesn't work, than you need to use a stud extractor tool such as https://otctools.com/products/stud-remover-38-inch A stud extractor tool will grip the entire stud and distribute the torque rather than concentrating to a small area by using double nuts. A stud extractor tool is the proper way to remove them.

 

thanks for the reply.
I tried heating it up and spraying pb blaster. I sont want to use the torch too much in that area since its aluminum housing.
if I have not choice then ill use a stud remover. I just dont want to mess up the threads.