[jasonkg]

I'm currently installing an OBX header and I keep rounding each manifold bolt with the slightest bit of pressure. Are these bolts 12mm? I've tried a 12 point 12mm deep socket and a standard 12mm deep socket and there seems to be enough play that I am rounding the bolts.

Did anyone else have an issue with these bolts?
Did you use a 12mm to remove them?
Did you heat the bolt heads with a torch to get them off?

 

[jasonkg]

Well, I took another stab at it and I was able to get 4 of the 5 bolts off. Two of them I was able to get from the bottom and two from the top of the engine bay. WHAT A PAIN!!! The final one is round off so I'll have to buy a turbo socket to get it off.

Lesson learned: Don't use 12 point 12mm sockets for the manifold bolts, use the 6 point 12mm deep socket to get over the thicker part of the nut.

Hope this helps.