Quote:
Originally Posted by synolimit
Sounds like an over tightening problem. Without cheating and looking, tell me the torque spec? I bet you bent the header flange. You'll need a straight edge and you'll have to check the surface of it. In the manual for example it says the header flange to the head is out of spec if there is like 0.028" gap.
http://www.nicoclub.com/FSM/370Z/Coupe/2013/EM.pdf. Page 41 and 145 |
That's what I thought too until I ran the stock cats after the fact without any problems / leaks whatsoever.
However, thinking about it, it would be pretty hard to bend the flange if you're using just a socket wrench and not an air impact wrench. Plus it wasn't gorilla torqued whatsoever.