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Reply With QuoteNo mandrel bending...what's the point?
ok heres the deal i think im going to give it a try( make my own cat-back system) i was wondering if anyone else would be into this i can do anything from stock 2.5 to 3 in. im not going to promis any hp #s or gains of any kind. as far as i know i might not be able to do it but believe if i do ill post pics. if you are intrested in this it would be about 100$ PLUS parts and shipping as soon as i figure out how much all the parts are ill post that too everything is welded im going to do two seperate pieces kinda like our stock exhaust if you want to send me your muffler ill weld it on too and test fit everything to make sure it fits this is for and 8g i could prolly do a 7g or anything but i would need to make a jig for so i would need a stock exhaust system from that generation let me know if you have any question
ps this in not mandrel bent its hand bent but still very smooth
No mandrel bending...what's the point?
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does it really matter as long as the bend is still smooth and no kinks, I really dont think so
Sounds to me like you don't know what you're talking about. I wouldn't trust you to make my exhaust.Originally Posted by sho-tyme
do you even know what the fucka a mandrel bend is
hahahahahhahaha
*breathe*
hahahahahahhaah
Boy, I know more about cars than you could ever possibly hope to know. I'm FULLY aware of what a mandrel bend is, thank you very much.
here you go tell me which on is mandrel and which on is not
http://www.warpspeedperformance.com/huth7.jpg
believe me if it didnt look good( the one i make) i wouldnt send it to anyone im not going to send out something that i wouldnt put on my car
o really what school you goto man im really tired of you fucking hot heads on here thinking you know it all
im assuming your gonna press bend it>?
i agree, you can press bend a pipe without it kinking and it can be pretty smooth. the thing is, when you bend the pipe without the mandrel, the shape of the pipe starts to change. if you were to take a cross section of a press bent pipe it would be more of an oval. it is still smooth. but, if you were to compute the area of that oval cross section and compare it to the cross section of one that was bent with a mandrel, you'll notice that it will be less. meaning that there would be some kind of restriction in the exhaust.
The one on the bottom is mandrel bent. Can't you see how the bend on the top is inhibitory to airflow? If you can't, you shouldn't be making exhaust piping.
Oh, and I go to Loyola University Chicago, I'm a freshman. I just turned 18, and I know more about cars than you, end of story. If you want to talk about cars, I will own you on every subject from the air filter to the muffler tip.
Oh, and I live in Saint Louis, btw. So I'm not that far from you when I'm at home.
very true, all im trying to do is see if anyone wants a cat- back weither it be a stock size or larger for there car, like maybe they have a hole and midas wants 400$ to fix it (example) im not trying to sell a freaking hp gain exhaust. then if they chose to i would make them one for alot cheaper you see im tring to help people here not put them down or make them feel dumb like a lot of people do here and ill tell you what pinoy you are prolly one of the most helpfull people on here
heres a simple one for you what are the 4 cycles of an internal combustion engine in order
I think you were the one that got uppity about your press bends.
ROFL.
How in detail do you want me to go? Do you want me to discuss the particulars of airflow dynamics, valve actuation timing, squish area and valve shrouding? Do you want me to explain what happens during the combustion stroke that causes detonation? How about why advancing cam timing shifts the powerband higher into the rev range?
Anyway, to answer your question very simply, the Otto cycle is as follows: Intake, Compression, Combustion, Exhaust. Whether it be rotary or piston driven, it's the same. For you more simple minded folk, you could also call it Suck Squish Bang Blow....just sounds dirty, doesn't it?
so i guess you dont know the answer
Wow, this blew up....Scootin unfortunately knows what he is talking about, he's a smart kid...you need it for LUC too, but he may come off a little strong. That's just his personality.
But just say you do make these, what would you charge for a cat back? I assume you will weld on all the hangers, flanges, and weld a resonator as well post-cat? I hope you can weld really good....it's not as easy as it looks...my first weld job (10 years ago) fell apart while I was cruising down the street....it takes practice and knowledge of welding dynamics to get it done right, especially if you are gonna be producing a product for someone else. I'd say make yourself one, prove it's gonna hold up, and maybe then people will look to you for stock replacement parts.
Just my .2cents, flame on
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looks like you odn't know the answer...cuz scootinintegra is right
he must have been typing the same tim i was typing
You have a PM, exhaust-masta.
U need to chill out, cause this is the best way not to get customers.
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