new extractors/exhaust

[nokey]

hey guys i finally got around to getting my extractors after months of debating.the bloke orderd me hurricane extractors,and all up with them being fitted $370 ,which i dont know if it is good but i thought i would ask you guys ive read some posts about hurricane being shit so i thought i would ask if any of you guys have them on your pinny,cheers guys

[nokey]

yer i looked a bit more and found people are paying around $300 to $320,hmm i feel ripped off but its ok atleast ill have them im not game enough to ask about a cat back exhaust,anyway if there any good im still interested in hearing guys thanks, i hope my exhaust will be a nice note as my car sounds like a tractor  so yer and its an auto so it doesent help lol.

[krayzie]

i have Lukey extractors on mine and payed 170 for them, but i fitted them myself. Not sure what hurricane extractors are like  but i assume they would be very similar if not the same as other brands. You cant go too far wrong with them and anything is better than the standard manifold. You will notice the difference.

[nokey]

and if any of you guys have a nice sounding exhaust i wouldent mind hearing what it is.when i first got the car i went a rice burner cannon then got it taken off as it was rubbing my gaurd and melting it a bit .but my dad  just got one put on for me i didnt know,its just a custom tip one from the exhaust bloke sound ok first week now it rattles a bit every mnow and then.and sounds like im a truck ,so i am going to get catback and a different cat but i have no idea wat muffler to get hoping for somthing deep and kinda loud not enough to atract the cops something loud under load but still has a rumble ,maybe lukey or similiar?cheers guys 

[chr1S]

i have Lukey extractors on mine and payed 170 for them, but i fitted them myself. Not sure what hurricane extractors are like  but i assume they would be very similar if not the same as other brands. You cant go too far wrong with them and anything is better than the standard manifold. You will notice the difference.

lol better than standard manifold? not for the $300 you pay, OR $170. Off the shelf items are shite,  for example ca20 extractors run the same size primaries yet there is a 400cc displacement difference.

[nokey]

if you saw my manifold you would agree they look better then stock they look like someone pour salt on them then took a crap on them then painted the with rust.,but its just an upgrade from them,im getting later down the track bigger cat vn maybe flexi and piping im just working my way there,but thats ages away coz im to lazy to do it,but im chucking in 2 petrol blower vacs up to my air intake hopefully pumping out 14 psi ,and yes i am joking or am i?

[Habibosaurus]

if you saw my manifold you would agree they look better then stock they look like someone pour salt on them then took a crap on them then painted the with rust.,but its just an upgrade from them,im getting later down the track bigger cat vn maybe flexi and piping im just working my way there,but thats ages away coz im to lazy to do it,but im chucking in 2 petrol blower vacs up to my air intake hopefully pumping out 14 psi ,and yes i am joking or am i?

Like this.....    http://www.youtube.com/watch?v=O4emAuCcktk   

[nokey]

lmfao i didnt think anyone would have tryed that before lol good work.

[pedro666]

your rattle could be the rubber strap holding the muffler, sometimes they work themselves loose.

[krayzie]

You obviously dont own a CA20 pintara or corsair if u believe stock is better. I dont know anyone who has a stock manifold anymore because they all crack, they are shite, and they weigh a tonne. Any off the shelf extractors will give u better response and a better sound. Well worth the $170 i believe. I know i could have got it cheaper but i was in a hurry.

[cruizer]

You obviously dont own a CA20 pintara or corsair if u believe stock is better. I dont know anyone who has a stock manifold anymore because they all crack, they are shite, and they weigh a tonne. Any off the shelf extractors will give u better response and a better sound. Well worth the $170 i believe. I know i could have got it cheaper but i was in a hurry.

Wouldn't argue with chris mate. He does know what he's talking about.

[chr1S]

Ok Krayzie, everyone is free to voice their opinion, I still stand by mine...I'll let you realise it later.

[bones]

is there a better alternative to the manifold on the ka24e?

brand?
price?
gains?

will it be reasonable upgrade?

[krayzie]

Ur probably right chris lol. Can u explain a little more why the stock manifold is better on a ca20,  i think u said it had a larger capacity or something like that, how does this make a difference?

[chr1S]

I have no experiance with the CA20 motor so I can't give a reason as to why. I simply assumed you were talking about a KA24E header, which is not so bad.

The displacement issue I was talking about was how ka24e headers have the same size primaries as a ca20 primary variant.

[SSS]

is there a better alternative to the manifold on the ka24e?

brand?
price?
gains?

will it be reasonable upgrade?

Unfortunately not.

For curiosity's sake i still want to build a decent set of headers for one of my U12's: stepped primaries, 4-1 merge collector, megaphone style outlet etc etc.

I firmly believe that there is some decent gains to be had with good headers, i just haven't found the magic combination to try in engine analyzer pro.

[krayzie]

k thanks Chris, i understand what u r saying now. The only experience i have is with CA20.

[bones]

whats a good option for a cheap cat conv...?
had two ideas,
smash the webbing out the middle of the cat and weld it onto the zorst to "appear legal..."

or.... use a say....commodore cat? theyre 2.5" and theyve gotta be better than the standard u12 items...?

[BILL*69]

smash the webbing out the middle of the cat and weld it onto the zorst to "appear legal..."

Youll get flamed (refer to Unbalanced_ thread), and its illegal as you know, and bad for the environment, and a hefty fine, but its your choice.

or.... use a say....commodore cat? theyre 2.5" and theyve gotta be better than the standard u12 items...?

There is an article on Autospeed about replacing a stock pintara cat converter with either a commodore or magna cat converter, namely because it is bigger and still legal. Ill try find it.

[JelloBello]

...can't really get much cheaper then smashing out the insides of your cat-converter It's what I'd do

[BILL*69]

...can't really get much cheaper then smashing out the insides of your cat-converter It's what I'd do

If you had a cat? 

EDIT: Here is the article. http://www.autospeed.co.nz/cms/A_109456/article.html

[krayzie]

Just wondering, Does anyone actually know anyone who has been done for smashing the inside of their cat out? I think if we drove skylines, rx7's or wrx's then we may have something to worry about. Dont think they would bother sniffing a corsair / pintarra. But yeh it is illegal and we are all law abiding citizens  .

[bones]

If you had a cat? 

EDIT: Here is the article. http://www.autospeed.co.nz/cms/A_109456/article.html

cheers bill,

most coppers would just get a torch and look under the car at the exhaust system and see a cat and you wouldnt have a problem..its not until the epa get hold of you until your in troble..

[DeathPlaza]

meh loud exhausts are rice-tastic, cheap headers are pointless if you dont spend 300 dollars just for the part its probably some taiwanese mass produced crap.  im sure you gain more from the weight reduction of getting rid of that cast iron than you gain from exhaust flow.  and if your engine isn't intaking more air than stock and adding more gas you aren't going to get much out of it besides a lot of vibration and cop attention.  as far as headers and cats go, how much are you gonna get outta a stock engine?  4-5 hp on a ka?, probably less on a ca20?  headers also tend to shift your powerband higher and decrease swirl in the combustion chamber at partial throttle which can reduce torque and efficiency (depending on primary size and length and collector size, the bigger it is the worse it is).  in daily driving situations useable torque is more important than a couple extra ponies after 5k rpm.  imo not worth the price, have someone braze up your stock cracked headers with an oxyfuel torch or something im sure thats a hell of a lot cheaper.  also how hard is it to remove and install an exhaust manifold, its got 8-10 bolts on the head and two on the cat as long as you have a jack and stands and a 12 or 14 mm ratchet you can probably do it assuming that the taiwanese kid who made the headers even drilled the holes correctly.   

i would only hollow out my cat if it was poisoned (full of carbon and clogged) and i had no money, the price of a new stock cat is ridiculous, and junkyards in california cant even sell them used legally.  although swapping to a cat from a v6 or other big engine is a pretty good idea if you can get a hold of one, but whatif the flange isn't the same then you need to weld.  cars with their cats removed (hondas especially) tend to sound really horrible but thats my opinion.    trust me you dont wanna grow out of having a loud car and have to go back and spend all your money all over again.  im only 20 and im already sick of the noise. 

i have a 2.5 inch mandrel bent exhaust with the stock 2 inch cat and an obx loopback muffler on my civic, it sounds awesome and flows well, the best part is its only loud when I open it up so i can pull up next to a cop and not piss myself, yet vtec still rips really hard and loud.  here in California modified exhaust is a 900 us dollar ticket and the cop doesn't even have to prove that you even have a modified exhaust you have to prove that you dont to get out of it.  besides that your car is gonna smell like ass (or gas however you wanna look at it) 

(I really couldn't even imagine a lazy donut-munching cop getting down on his stomache to look under your car to see if you have a cat )

trust me i've driven with open headers and i've driven with no muffler for over a year, it gets old really fast. 

sorry that was way too long but you dont have to read it if you dont want. 

[SSS]

trust me i've driven with open headers and i've driven with no muffler for over a year, it gets old really fast. 

That's fairly hardcore there my friend, the only place i'd consider driving with open headers would be at the track / drag strip.

[DeathPlaza]

yah i know i wouldn't have done it if i didn't absolutely have to, and since my car doesn't have a heater shitloads of exhaust gets into the cabin and it smells horrible and CO in your bloodstream doesn't feel good, plus if it rains you gotta keep the windows open... yah its ballsworthy.  not to mention my car is probably running a 9:1 afr because my ecu has a "racing chip" in it bleh...

[cruizer]

I thought NA engines ran like crap with no headers/extractors? Don't they need a little backpressure to work properly?

I could be wrong though 

[chr1S]

backpressure = amount of noise your exhaust makes

in a performance exhaust you want F all backpressure, people often confuse the term backpressure with performance tuning, backpressure is found on smaller restrictive exhausts hence why they are quiet, smaller exhausts give you more torque down low in the rpm range as the hot gases dont expand in the large pipe, they keep their heat and move quicker (denser air needs more energy to move). Thats why cars with larger exhausts tend to feel sluggish down low, and cars with open headers just feel like ass under x rpm, but once the rpm's are high, the gasses arn't fighting to run down this small tube, instead they have this large open space to escape so the backpressure in this system is by far lower than a smaller diameter system and hence the loudness and good performance at high rpm.

if you've ever noticed a pressure gauge fitted onto a racing exhaust system you'll notice they hate any backpressure in the system. 

correct me if im wrong anyone, i havn't done exhaust research for a while , it's abit sketchy to me right now hehe

[DeathPlaza]

umm i just meant that i was running without a cat or exhaust i still had the manifold on... actually if you run an engine without any exhaust manifold air from the outside will come in through the exhaust port.  at a certain part of one of the strokes (cant remember when to be honest) inbetween exhaust pulses it creates a vacuum and the air from outside can enter the combustion chamber and burn exhaust valves by increasing air fuel ratio which causes the engine to run lean...

so yah never start an engine without an exhaust manifold unless you are trying to destroy it.  having backpressure helps prevent gas reversion because the hot gasses tend to flow toward the cooler area (outside the exhaust theoretically)  

[chr1S]

having backpressure helps prevent gas reversion because the hot gasses tend to flow toward the cooler area (outside the exhaust theoretically) 

stepped primaries ftw