Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Diameter of pipe just before Y?

What is the diameter of the pipes coming from the manifold just before being squished together? Also what is the diameter of the SE 2.5 exhaust?

From my sawed off hunk of Y-pipe 180 bend and merge section:

The 2 legs of the Y are each 1 3/4" ID. They are crushed and merged into a 2 1/2" collector. I believe the stock 2.5L exhaust is 2" ID from the back side of the cat all the way to the exhaust tip.

Those are OD dia's. From the Cat back on the SE models it 2" OD. All exhaust pipe is measured from the OD.

Dave