Mandrel bending of exhaust
03-12-2004, 04:50 PM
#1
Intermediate
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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 ?
03-12-2004, 05:04 PM
#2
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.
03-12-2004, 05:09 PM
#3
Le Mans Master
Re: Mandrel bending of exhaust (Nuvolari)
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.
03-13-2004, 09:59 AM
#4
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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.
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.
03-13-2004, 10:06 AM
#5
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]
Pete.
[Modified by 84whitevette, 3:06 PM 3/13/2004]
03-13-2004, 03:01 PM
#6
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Re: Mandrel bending of exhaust (84whitevette)
Check out this site, http://www.vansantent.com/definitions.htm
