hey guys...i was looking at the hyper rev tuning mag, and was curious what our stock exhaust's diameter is. does anyone know the diameters for the headers, the "Y" pipe, the straight pipe, and the muffler parts?

thanks a bunch

 

good question. i need to know this too. thanks

 

Portland mufflers in my area has a stock resonator from a 350Z. The guy working on the car when I went in put a piece of a 2.5 and a 2.25 up to the stock piping and showed me that it was actually in between both sizes making it a metric size or something. So just smaller than 2.1/2 and just bigger than 2.1/4

 

i just called the dealer and asked this question. they told me 70mm is the diameter. I believe that equals 2 1/2 inches. Please correct me on this if i am wrong. Also, i think the stock is exhaust is all mandrel bent which is pretty good.

-Steve

 

70mm is about 2 3/4 inch-- maybee a little more 0--- maybee he was talkin about the outside diameter