Mandrel bending of exhaust
 

I was talking with a exhaust guy the other day and he is saying that if I get exhaust bent for my car that I should make sure that they use a mandrel type bender. He claims this will create better flow. Is this true ?

Re: Mandrel bending of exhaust (Bringin'it)
 

Yes this is true. Non-mandrel bent pipes get smaller around the area of the bend while using a mandrel ensures the same pipe diameter throughout.

Re: Mandrel bending of exhaust (Nuvolari)
 

:iagree:

Re: Mandrel bending of exhaust (Bringin'it)
 

He, and the guys who have responded, speaketh the truth. I can't remember the exact % of cross section a die bender eats up, but I think it is around 30%???

Either get it mandrel bent (harder to find a place to do it and more expensive usually) or buy pre-bent elbows and make your own.

Re: Mandrel bending of exhaust (Bringin'it)
 

The mandrel bending process maintains a constant inside diameter, even through pipe bends. Flow area remains consistent, increasing flow more than approximately 35% compared to stock, serrated bent pipes.

Pete.




[Modified by 84whitevette, 3:06 PM 3/13/2004]

Re: Mandrel bending of exhaust (84whitevette)
 

Check out this site, http://www.vansantent.com/definitions.htm