View Full Version : How important is mandrel bent exhausts?

01-12-2010, 03:23 PM
I got a good deal on an exhaust but the pipe is mandrel bent... The dp I will use it but after the down pipe it's just compression bent 3"...

I also have a deal on an exhaust with mandrel bent elbows welded to 3" but it's more expensive than the previous so I just was curious how important it is that the pipe is mandrel bent.

01-12-2010, 03:36 PM
More important with higher horse power applications to have a smoothe system. A mandrel bend exhaust system is just part of making your entire system as smoothe/free flowing as possible.

01-12-2010, 05:34 PM
Like seerlah said, the only real problem with a crush bent exhaust occurs in high horsepower applications. They won't effect flow much with the lower horsepower. A crush bent will perform just fine for your needs at the moment.

01-12-2010, 05:42 PM
also from what i have noticed usually mandrel bend exhausts sound a bit better due to the smooth flow...Just personal experience don't have any data to back this up.

01-12-2010, 07:30 PM
I got a good deal on an exhaust but the pipe is mandrel bent...

You make it sound like it is a bad thing[;)]

01-12-2010, 08:04 PM
i think he meant to say isnt haha

01-14-2010, 11:05 AM
No I meant it's not all one piece... It's mandrel bent elbows 90 and 45 degrees welded to straight pipe that is bent slightly to fit

01-14-2010, 12:04 PM
Really though I question how much of an effect a crush bent system on a 3 inch exhaust would be on a car that is pushing less than 450 HP. Since the diameter is so large it should have the same flow characteristic as a 2.75.