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chris_mac
Joined: Sat Aug 23, 2008 11:30 pm Posts: 283 Location: Sydney
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 Posted: Mon Dec 21, 2009 1:40 am |
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I've read few old posts about new bigger exhaust and extractors. They all are about 1.3 stock sierra one engine. I have in my zook 1.6 carby engine. I've read that bigger exhaust with high flow cat end different extractors will improve power and torque. What are your opinion in case of 1.6 carby vitara engine. Engine is bit biger so should I go for 2" or 2.25" exhaust? What kind of extractors? I honestly dont't know what kind of one I have now, but they touch gearbox(vit one), which is rather not good. Current exhaust looks rather like home made than proffesional one and muffler has holes. I will need to change it. I don't want the whole system to be loud, but I woludn't mind a bit of extra power. What are your suggestions? Standard vit extractors would fit into sierra? are they good or is there any point of fitting different ones? high flow cat and what kind of muffler?
I'm in Sydney. Anyone knows an exhaust shop in Sydney worth recommending?
what is the difference between normal exhaust and mandrel bend one or whatever is that one called?
cheers
Chris
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BUZOOKA
az supporter
Joined: Sun Aug 30, 2009 11:30 pm Posts: 2659 Location: hobart tasmania
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Posted: Mon Dec 21, 2009 1:45 am |
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if u go to big of an exhaust u lose alot of compresion / back pressure so u will probly only really want about a 2 inch system
_________________
-indebt 4x4 club-
nav 32s n winch cust rear
Last edited by BUZOOKA on Mon Dec 21, 2009 2:07 am, edited 1 time in total.
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Fatzook
az supporter
Joined: Sat Oct 27, 2007 11:30 pm Posts: 14977 Location: The Hills
Vehicle: Vitara, NGV
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Posted: Mon Dec 21, 2009 2:04 am |
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BUZOOKA wrote: if u go to big of an exhaust u lose alot of compresion / back pressure so u will probly only really want about a 2 inch
Put the back pressure myth aside for one moment 
IMO 2" and a GOOD cross chamber muffler will give a noticable gain without being abnoxiosly loud and 'drone-ee'  .
Definately fit extractors and a high flow cat if you can afford them too.
Also consider having your carby re-jetted after these mods, as there will be further gains to be had with proper fuel tuning.
All JMO
Pete
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MacDaddy
az supporter
Joined: Thu Mar 26, 2009 10:30 pm Posts: 10453 Location: Perth, Australia
Vehicle: Jeep
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Posted: Mon Dec 21, 2009 7:19 am |
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krzysmac wrote: I've read few old posts about new bigger exhaust and extractors. They all are about 1.3 stock sierra one engine. I have in my zook 1.6 carby engine. I've read that bigger exhaust with high flow cat end different extractors will improve power and torque. What are your opinion in case of 1.6 carby vitara engine. Engine is bit biger so should I go for 2" or 2.25" exhaust? What kind of extractors? I honestly dont't know what kind of one I have now, but they touch gearbox(vit one), which is rather not good. Current exhaust looks rather like home made than proffesional one and muffler has holes. I will need to change it. I don't want the whole system to be loud, but I woludn't mind a bit of extra power. What are your suggestions? Standard vit extractors would fit into sierra? are they good or is there any point of fitting different ones? high flow cat and what kind of muffler?
I'm in Sydney. Anyone knows an exhaust shop in Sydney worth recommending?
what is the difference between normal exhaust and mandrel bend one or whatever is that one called?
cheers
Chris
Hiya,
I just got extractors and a 2inch system put on my 89 SWB Vitara with G16A engine, and it is the best thing i did, yes you definitely feel a power/torque increase, you have to push the peddle less to get the same performance, but if you do push the pedal hard, like i do alot, he he, it just powers away !
I also only use Premium Unleaded now, 95 Octane, and that helps it run alot better too...
And i must say, the engine just keeps running better and better, must be allowing alot of crap to clear the cylinder head now, and burning off what was there already !
I highly recommend getting extractors and a 2 inch system
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MacDaddy
az supporter
Joined: Thu Mar 26, 2009 10:30 pm Posts: 10453 Location: Perth, Australia
Vehicle: Jeep
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Posted: Mon Dec 21, 2009 7:23 am |
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BUZOOKA wrote: if u go to big of an exhaust u lose alot of compresion / back pressure so u will probly only really want about a 2 inch system
Hiya,
Exhaust Back pressure is a 100% Myth !!!
It doesnt matter how big the diameter of the pipe is, but the length of the pipe does matter !
peaceout
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BUZOOKA
az supporter
Joined: Sun Aug 30, 2009 11:30 pm Posts: 2659 Location: hobart tasmania
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Posted: Mon Dec 21, 2009 2:50 pm |
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o ok i was told that by the place i was buying my exhaust off so i took that as tech as its not the first place i have heard it but ok no worries
but still a zook wouldnt look that great witha 4 inch exhaust  
_________________
-indebt 4x4 club-
nav 32s n winch cust rear
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MacDaddy
az supporter
Joined: Thu Mar 26, 2009 10:30 pm Posts: 10453 Location: Perth, Australia
Vehicle: Jeep
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Posted: Mon Dec 21, 2009 8:12 pm |
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BUZOOKA wrote: o ok i was told that by the place i was buying my exhaust off so i took that as tech as its not the first place i have heard it but ok no worries but still a zook wouldnt look that great witha 4 inch exhaust Yep alot of people still perpetuate the back pressure myth...
I recon it would look cool with a 4inch exhaust !
Or how about 4 x 1 1/2 inch pipes, one for each cylinder, now that would be awesome ! 
peaceout
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steak_knife
az supporter
Joined: Fri May 22, 2009 11:30 pm Posts: 21335 Location: Smart Ass Island
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Posted: Mon Dec 21, 2009 11:14 pm |
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 4 pipe's? not only would that look like shit, sound like shit it would also make anyone working on this shit want to shit on your head for doing such a shit mod!!! 
_________________
I used to be indecisive,
now I'm not so sure.....
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matty87
Joined: Sun Oct 25, 2009 10:30 pm Posts: 794 Location: the wild west
Vehicle: 1987 sierra tray back buggy
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Posted: Tue Dec 22, 2009 12:40 am |
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hahaha
so steking hows this for a sierra ute?
how bout twin truck stacks nice 2 1/2 inch stainless pipes coming up either side benind the cab and facing backwards slightly angled out
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steak_knife
az supporter
Joined: Fri May 22, 2009 11:30 pm Posts: 21335 Location: Smart Ass Island
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Posted: Tue Dec 22, 2009 12:47 am |
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matty87 wrote: hahaha so steking hows this for a sierra ute? how bout twin truck stacks nice 2 1/2 inch stainless pipes coming up either side benind the cab and facing backwards slightly angled out Pic's?
Could you imagine trying to do a clutch on a zook with a 4 pipe exhaust on it!?!?!?!?!?
_________________
I used to be indecisive,
now I'm not so sure.....
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BUZOOKA
az supporter
Joined: Sun Aug 30, 2009 11:30 pm Posts: 2659 Location: hobart tasmania
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Posted: Tue Dec 22, 2009 12:48 am |
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lol my cousin had a older modle rodeo with that done it actually looked alright but we shouldnt be spamming a tech thread
_________________
-indebt 4x4 club-
nav 32s n winch cust rear
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matty87
Joined: Sun Oct 25, 2009 10:30 pm Posts: 794 Location: the wild west
Vehicle: 1987 sierra tray back buggy
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Posted: Tue Dec 22, 2009 2:00 am |
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sorry if it sounded like i was taking the piss i agree totally 4 pipes would be a stupid idea and yeah i know how tight it is under there i can imagine it with 4 pipes.
i was actually being serious about truck stacks you sorta get the idea of what im on about?
no picks of it yet the truck is still a work in progress. infact its still a chassis with everything else scattered around the yard.
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chris_mac
Joined: Sat Aug 23, 2008 11:30 pm Posts: 283 Location: Sydney
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Posted: Tue Dec 22, 2009 2:42 am |
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looks like I have to look around for a place to do exhaust (2" high flow cat and muffler). What kind of extractors should I use sierra or vitara one, are they same? will vit one fit into sierra?
what is that mandrel bend exhaust. ppl say it's so good, but expensive (I don't like that part). Why pay more for that? suzi is not a race car anyway.
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Fatzook
az supporter
Joined: Sat Oct 27, 2007 11:30 pm Posts: 14977 Location: The Hills
Vehicle: Vitara, NGV
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Posted: Tue Dec 22, 2009 4:20 am |
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Just get sierra extractors, with 2" system and high flow cat. Don't worry about mandrel bent, its a waste of time (and money) on an NA standard sierra.
One thing you should get them to do is tuck it up as tight to the floor pan as possible. This will help prevent the pipe and muffler from being damaged by passing terain under the vehicle.
Pete
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MacDaddy
az supporter
Joined: Thu Mar 26, 2009 10:30 pm Posts: 10453 Location: Perth, Australia
Vehicle: Jeep
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Posted: Tue Dec 22, 2009 5:55 am |
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steknig wrote: :shocked: 4 pipe's? not only would that look like shit, sound like shit it would also make anyone working on this shit want to shit on your head for doing such a shit mod!!! Why are you sooo unkind ? 
Some people just have to put down whatever is different.....
I really couldnt give a shit what others think, i dont want a Zook that looks similar to all the others, i want something unique and different, and, if i like it, thats all that matters !
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MacDaddy
az supporter
Joined: Thu Mar 26, 2009 10:30 pm Posts: 10453 Location: Perth, Australia
Vehicle: Jeep
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Posted: Tue Dec 22, 2009 6:03 am |
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matty87 wrote: hahaha so steking hows this for a sierra ute? how bout twin truck stacks nice 2 1/2 inch stainless pipes coming up either side benind the cab and facing backwards slightly angled out Hmmm i like the idea of truck stacks, would look nice in polished stainless steel, yeah that would look very nice !
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