another exhaust question

[stil bil]

ok, i went to another shop today, and asked if they did custom exhausts.  the guy tells me that they do and i ask anout cruch or mandrel  

he shows me his machine and im clueless it has diffrent plates, and lookes like it pushes on the pipe what kind it this...

he showed me a newer stock exhaust and it had little ripples on the inside of the bends what is this also???

[xhdriver]

thats crush bent, the little ripples is were they bent the pipe, the only places that i have seen that do mandrel bent exhausts, they have a bunch of pre bent mandrel bends and a bunch of straight and they weld it all up for ya.

[stil bil]

he said that he does bend pipe but he cannot bend it so that it has the ripples.... <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/eh.gif" border="0" valign="absmiddle" alt=':eh:'>

[Yoshi]

Shops that can do mandrel bends are very few and far between, put it this way: I live in washinton state, and there is all of ONE shop that has one, thats in the whole state.

Most shops CAN, however, order you mandrel bent piping, from there, it's a matter of welding straights to bends... but then you're left in the hands of the guy welding... how skilled is he? If he's not really good, then you have little imperfections and flaws that restrict airflow... no matter how minor it is, there's no real substitute for a mandrel bent catback pipe. 1 piece means smooth single piece of steel all the way back to the muffler.

edit: god my spelling sux sometimes <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=':p'>

[Kreator]

You can get 3-4 u-bends (2.5" diam cost around $11) and go to the muffler shop and tell them to do the bends using your stuff. You prolly will find someone who'll agree to do it. Or drive around and ask before you buy them.

[stil bil]

but who could i buy the bends from?? &nbsp;

and also &nbsp;are all the bends the same and how many are there(im lazy and its toooo hot outside to go look)