I'm redoing the exhaust on my 2000 2.4L soonish, and I'm wondering to go with mandrel or compression bent, I can get mandrel bent done for $500 and compression bent done for $250... all in 2.5".
My planned mods for this year are:
62mm TB, HO intake
Levelzero Stage II Cams
MSD-DIS II
50-75 wet nitrous shot
OBX Header
Borla Pro XS 2.5 C/C Muffler
Casper O2 simulator
and I'm hoping to build a new motor this winter, a bit more compression, beefy bottom end, ported and polished head, stand-alone, and more nitrous.
Is the mandrelbent exhaust worth the cost? Or am I looking at a 1-2HP gain?
Are you doing a dual exit setup? If you get mendral bent, you know for sure that it's a complete 2 1/2" bent piping and no disruption in airflow. That's pretty much the advantage and it's more expensive cause they have to use a certain machine to do it which is supposed to be pretty expensive.
www.kronosperformance.com / 732-742-8837
if you compression bend 2.5" parts will be about 2.25" and other parts will be 2.5"
up to you on what you want tosend
spend*
yeah we have a mandrel bender at work
but the biggest outs are set up to do is 2" or so
unless your going to be running boost you don't need mandral bent exhaust, use the extra money for a car payment
what about lots of nitrous? probably 150-200HP direct port shot on the motor I hope to build this winter.
ha 150-200 shot. like he said i too want to see that
its possible
thats how they tested the ecos durabliity for power at first for the performance build
but alot of saftey mods
sappyL61 wrote:its possible
thats how they tested the ecos durabliity for power at first for the performance build
but alot of saftey mods
Exactly.
Forged everything, better oilling, stand-alone (maybe HP tuners/OBDproject will be useful by then... who knows), basically a race motor thats still somewhat streetable. (I'll put less than 4000km on the car this year so while its my daily driver for now, it doesnt get driven a whole lot).
I'm not going to be an idiot and use stock parts and expect them to live under that kind of pressure.
if ya got the money to do it .... GOOD LUCK!!!!
And yes i would want to see that too
This is just my opinion, I'm sure some will dispute it, but here goes. get the mandrel bent. Why would you bother paying for bigger pipe and get crush bent? With crush bends, your exhaust is only gonna be as big as whatever it is in the bends, thus negating any real performance effect. If you are building the motor like you say, definitely get the mandrel bent. I feel, at least if you spend the money on the mandrel bent, you'll know you did it right. if i didn't want a performance gain, I would have left my old free-flowing muffler on the stock pipe, instead of spending the cash to get a crush bent exhaust done. That is why I went mandrel bent.
But for $500, you can get a stainless cat-back. Megan Racing systems are always on EBay (2.5" pipe) for under $300 or $400 shipped.
mandrel bent will flow better and looks cleaner, but if you live in a city that uses salt in the winter or by the sea it rust easyer, this is because the steel is stretched. So where the steel is stretched it tend to be weaker there and rust easier.
1979 Impala Sport Coupe Aeroback
? on the crushed the outside is stretched too
you can get in anodized if you want
