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Mandril bent pipes #327626 Nov 16, 9:08am Nov 16, 9:08am
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Mandril bent pipes
I'm thinking about doing a custom catback.
An I talk to a mechanic in my area and he said that I don't need mandril bent pipes. He said the restrictions already in the cat so it's not going to help any if I do get the mandril bent pipes.

What do you guys think?

My mufflers going to be Apexi N1 Universal muffler.
Any advice on the mufflers would help too.

Thanks

Re: Mandril bent pipes [Re: skym] #327627 Nov 16, 9:41am Nov 16, 9:41am
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you want the mandrel bends...your mechanic is a retard if he thinks that they will not help...

Re: Mandril bent pipes [Re: skym] #327628 Nov 16, 9:42am Nov 16, 9:42am
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Well, it's true that most restrictions are in the cat, but it does help if the rest of the pipes are mandril bent... Crush bent pipe are a lot more restrictive! I think he just told you that so it'll save him a lot of extra work as oppose to just crush bent the pipes. If you have the opportunity to choose, mandril bent for sure, it's worth the extra money and work!!! thumbsup

Re: Mandril bent pipes [Re: speed_celica] #327629 Nov 16, 9:59am Nov 16, 9:59am
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Well he said that he has to order the mandril pipes or something. And he said it was much more expensive with the mandril piping.

Without the mandril piping was $140 without the muffler. I don't know how much the mandril will cost me though...

I'll have to ask him about that.

What do you guys think?


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327630 Nov 16, 11:03am Nov 16, 11:03am
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i think you should shop around first b4 sticking with this machenic..i'm sure there are more then 1 muffler shop in ur town..


Originally Posted by pesho01
Question:
Whenever my car is at a full stop or even in park the RPM never sits on 0. what does this mean?
Re: Mandril bent pipes [Re: celicafourotwo] #327631 Nov 16, 11:10am Nov 16, 11:10am
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I just hope so. I'll have to ask in some parts store.


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327632 Nov 16, 11:34am Nov 16, 11:34am
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you want the mandrel bends...I bought a magnaflow catback kit, and installed it for $360 total...it has mandrel bends, and it friggin rocks, I get compliments on it all the time

Re: Mandril bent pipes [Re: AZZKIKR] #327633 Nov 16, 11:40am Nov 16, 11:40am
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Some muffler shops could actually do the mandrel bents themselves, shop around and find one that does. It'll cost a lot less than if they have to order it from somewhere else... and again...YOU'LL WANT TO GET MANDREL BENT PIPES!!!

Re: Mandril bent pipes [Re: AZZKIKR] #327634 Nov 16, 11:54am Nov 16, 11:54am
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Originally Posted by AZZKIKR
you want the mandrel bends...I bought a magnaflow catback kit, and installed it for $360 total...it has mandrel bends, and it friggin rocks, I get compliments on it all the time


mine's about the same. Mandril bent rocks. crush bent pipes lose about 20% of airflow. you're gona need that 20% grin and mandril bent looks a lot cleaner and nicer. definate thumbsup

Re: Mandril bent pipes [Re: speed_celica] #327635 Nov 16, 11:54am Nov 16, 11:54am
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mandrel is best but my custome went pretty much straight thru though and i like it it didnt need anybends


respect the gt-s
Re: Mandril bent pipes [Re: AZZKIKR] #327636 Nov 16, 12:03pm Nov 16, 12:03pm
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Originally Posted by AZZKIKR
you want the mandrel bends...I bought a magnaflow catback kit, and installed it for $360 total...it has mandrel bends, and it friggin rocks, I get compliments on it all the time


So did you buy the kit and installed just the kit? or did you take out the stock mufflers and go with a straight back with the magnaflow?

I don't get what you did?

Re: Mandril bent pipes [Re: skym] #327637 Nov 16, 3:58pm Nov 16, 3:58pm
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mandrel bent and ditch the mechanic...he's a retard. Shop around for a good and actual reputable exhaust shop...mine did my bends very good and cheap!

Re: Mandril bent pipes [Re: IcE_Z] #327638 Nov 16, 4:19pm Nov 16, 4:19pm
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What is the difference between the type of bending? Machine used to do it? or what?

Re: Mandril bent pipes [Re: SeeULater] #327639 Nov 16, 4:42pm Nov 16, 4:42pm
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I don't get it either... It's just a pipe thats bent... I don't know why it matters so much

But thanks guys I'll get the mandril bends and an Apexi N1 Universal muffler so I don't sound like a weed wacker civic. hehe


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327640 Nov 16, 4:50pm Nov 16, 4:50pm
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^^^think of a pipe that is bent but has crinkles in it slowing the air path down, now think of a bend that is completely smooth giving you optimal air flow. I am sure somebody can post some pics that will depict the differences.


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Re: Mandril bent pipes [Re: importcarbabe] #327641 Nov 16, 4:52pm Nov 16, 4:52pm
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How's the Apexi N1 universal mufflers?
Does anyone have better recommendations?


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327642 Nov 16, 4:57pm Nov 16, 4:57pm
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tpr


[Linked Image]
Re: Mandril bent pipes [Re: Maka] #327643 Nov 16, 5:00pm Nov 16, 5:00pm
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Just the muffler?
I thought they only make catbacks.
Anyways what does TPR stand for?
And whats a good price point for the muffler only?

Um... where can I get them... I just searched on froogle and nothing came up...


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327644 Nov 16, 6:10pm Nov 16, 6:10pm
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check the for sale forum, there was a guy selling his custom pipe with an apexi n1 muffler, I think it was 200$ thumbsup thumbsup


[Linked Image]
Re: Mandril bent pipes [Re: Maka] #327645 Nov 16, 7:29pm Nov 16, 7:29pm
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$200 is too much for that. I could get the muffler for 200.
I don't think the pipes are mandrilled anyways.

TPR's too hard to find. I'm guessing only EasyC sells it to groups.

How's the Apexi N1 universal muffler? anything other than TPR?


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327646 Nov 16, 7:42pm Nov 16, 7:42pm
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Also how big of a piping should I get for the N1 muffler?
There's 2:
60mm 90mm
80mm 115mm

What are these in inches?


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327647 Nov 16, 11:56pm Nov 16, 11:56pm
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Mandrel bent pipes use a "Mandrel" inside the pipe during the bending process to keep the pipe from distorting during the bending process. In other words, the ID of the pipes stays the same throughout the bend when using a mandrel.

Normal Muffler shops use a hyd bender to make bends in the pipe. This actually crushes the pipe on itself and you lose on the ID of the pipe through the bend. Not only does the pipe bend onto itself (hurting flow), but it also "wrinkles" which disrupts flow as well.

YOu can have mandrel bent "U-Bends" ordered up and have the muffler shop cut and weld them to whatever you want or you could buy a muffler kit. I personally like Magnaflow and TPR, with TPR being my first choice.

Re: Mandril bent pipes [Re: red01gts] #327648 Nov 17, 12:09am Nov 17, 12:09am
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I was thinking about getting Magnaflow but so many people were against it. I don't know why?
Do you know?
I'm more into the sound than performance. The gains don't really matter for me. Just a decent one would do.


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327649 Nov 17, 8:15am Nov 17, 8:15am
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Dang~
I called other muffler shops and they don't do Mandrils anywhere in Bradenton... What shitty place... Only old people live here... thumbsdown


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327650 Nov 17, 11:57am Nov 17, 11:57am
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Mandrel bends are better because the pipe retains its full circular shape. Pressure bent pipes will bend the pipe in a way that stretches the pipe on the outside and squeezes the inside together giving a small skrunched pipe that is worst then stock. The mechanic is right that the cat is restrictive but the whole point of an aftermarket exhaust system is to make the system as a whole less restrictive, lazy mechanics and there stupid logic, you might not want that guy working on you car.
The mm to inches conversion is roughly 25.4 mm=1 inch.

Re: Mandril bent pipes [Re: shonen] #327651 Nov 17, 12:01pm Nov 17, 12:01pm
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Originally Posted by shonen
Mandrel bends are better because the pipe retains its full circular shape. Pressure bent pipes will bend the pipe in a way that stretches the pipe on the outside and squeezes the inside together giving a small skrunched pipe that is worst then stock. The mechanic is right that the cat is restrictive but the whole point of an aftermarket exhaust system is to make the system as a whole less restrictive, lazy mechanics and there stupid logic, you might not want that guy working on you car.
The mm to inches conversion is roughly 25.4 mm=1 inch.


Ok but nobody here has mandril bending tools.
I guess I have to get an aftermarket catback instead of custom.

The last part was funny hehe
but I get you thumbsup

Re: Mandril bent pipes [Re: skym] #327652 Nov 17, 12:05pm Nov 17, 12:05pm
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first off
there is no such thing as a catback for a celica, the piping does not allow for a catback and even if there was, it wouldn't help any.
all the exhausts are axle backs
TPR makes a new axle back for the celica..they are not a major company that you can find on a website, they are the best performing so far...better than all exhausts for celica.


SUBARU TECNICA INTERNATIONAL
Re: Mandril bent pipes [Re: VSGTS14] #327653 Nov 17, 12:08pm Nov 17, 12:08pm
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I was thinking about custom catback because it was much cheaper.
It wasn't because of the performance. I just thought I could save some money if some one could do it in this town...
But turns out noone can.

So I'm saying that in the end I'll get the axle back. So much for nothing frown


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
Re: Mandril bent pipes [Re: skym] #327654 Nov 17, 12:12pm Nov 17, 12:12pm
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if you did a custom catback, all you're doing is adding a little more piping to the axle back..which isn't going to make a whole lot of differnce..


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Re: Mandril bent pipes [Re: VSGTS14] #327655 Nov 17, 12:21pm Nov 17, 12:21pm
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Yeah it may not be different with the custom catback in performance but it's much cheaper doing a custom catback than buying a catback system like TRD.
But I've decided that i'm getting the magnaflow or a used N1


Quote:
Originally posted by tido:
i beat a dude on a bike going to work today...i revved on him and we lined up at the light and it was on....i hit lift once...thats how hardcore it was....
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