Exhaust manifold stud nuts.

[danieljames]

Howsit all. I'd like some fanatic input with regards to this. Is it essential to use brass nuts to fasten the manifold onto the head or would normal high tensile steel nuts suffice?

 

[Nikhil]

I you want the nuts to fuse to the manifold use steel :rollsmile:

 

[danieljames]

Lol. Sweet boet. Shot for the quick reply.

 

[ver328i]

Mr Danieljames...what you up to?

Does it involve certain parts from an m3? parts like headers maybe? :rollsmile:

 

[danieljames]

Mr Danieljames...what you up to?

Does it involve certain parts from an m3? parts like headers maybe? :rollsmile:

Lmao. They've been hanging in the garage for a while.....and I got whipped by a 328i......... #motivation ....so now I'm getting all parts required

 

[Luis Malhou]

and they are special brass nuts, they have a oval look to them when viewed from the top. Dont use any washers

 

[danieljames]

I've ordered nuts from the stealers....actually waiting on a price....i can get high tensile studs from bolt-it.....7x1mm thread pitch. Is high tensile a good idea? Or should I be using mild steel?

 

[moranor@axis]

I would jut get these from BMW the cost should not be very high and this takes all the guess work out you know they will be correct

 

[danieljames]

I would jut get these from BMW the cost should not be very high and this takes all the guess work out you know they will be correct

I hear what you are saying. But BMW want 600 bucks for studs that are 42 mm long......which is ridiculous if I can get all 24 for under a hundred bucks. I'll do some more research WRT the studs.

 

[moranor@axis]

what would worry me is the expansion properties of the studs if these are wrong it could lead to leaks or metal fatigue on the head

paying R 500 more might seem like a waste of money but it is cheaper than fixing problems down the road

If you can find what grade stud BMW uses then its a win

 

[danieljames]

Sweet!!! If I can't get the right stuff aftermarket ill see how far I can twist the agents' arm. Was just having a conversation about that very point with a few guys here at work

---

Ok so I found this jute resting point
http://www.e46fanatics.com/forum/showthread.php?t=855155

If I can't find inconel studs them OEM it is . Thanks a mil gents