Spiral Flow Outside diameter?
Spiral Flow Outside diameter? I'm wondering if anyone knows for sure, the outside diameter of the different size mufflers from Spiral Flow?
Summit says:
2.5" = 4" O.D.
3.0" = 4" O.D.
3.5" = 4" O.D.
This sounds to me like Summit just copied and pasted the same info. I don't understand how they can keep the same O.D. while changing the interior dimensions. Any info.?
Summit says:
2.5" = 4" O.D.
3.0" = 4" O.D.
3.5" = 4" O.D.
This sounds to me like Summit just copied and pasted the same info. I don't understand how they can keep the same O.D. while changing the interior dimensions. Any info.?
I have a pair of the 3",,, but the car is at home. I suspect Moroso uses the same center section of the muffler (where the spiral section is) and just welds on different front and back sections based on the exhaust pipe size used.
