divided and undivided turbos - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ochbay · 05-02-2012, 05:28 PM

hey guys i have been reading alot on this site for some time now and now its time for my first post

a couple months ago i bought a super clean zenki. after having some fun with it i decided i wanted to do a swap. originally i wanted an sr20 but after doing ALOT of research ive opted for a s2 rb25. my question is i was looking at turbo manifolds and noticed they say divided and undivided. and i realized i had no clue what they were talking about lol i feel i have pretty good knowledge on car and engines and turbo systems but realized i dont know alot of the background stuff ( im still learning) ive search on google and wat not but everything i see its just people asking can they put an undivided mani with a divided housing or vice versa. is anyone able to elaborate what exactly a divided and undivided turbos and or manis are. and the differences.
Thanks in advance

ultimateirving · 05-02-2012, 06:02 PM

It has to do with maximizing the exhaust gasses as they leave the motor. So when they hit the turbo they do not conflict..

Hypothetical scenario, the manifold will allow the first and third runners to connect. and keep it divided from the 2 and 4th runners, until it hits the turbo.

I understand the theory but cant really explain online, and im not sure if it helps performance or what specific applications it would be useful/detrimental

ochbay · 05-02-2012, 08:41 PM

Sweet thanks man ive looked almost everywhere and couldnt find much i think i get tue jysts of what ur sayin so its all turbine and mani related and has nothin to do with the compressor.

lazysk8er2 · 05-03-2012, 02:09 PM

ultimateirving said it right...also its beneficial for twin scroll turbos as well

PoorMans180SX · 05-03-2012, 02:34 PM

Scroll down and read the italicized font on this page.

Twin-Scroll Turbo System Design Explained

onehundredoctane · 05-03-2012, 03:08 PM

ultimateirving · 05-03-2012, 04:04 PM

Awesome freaking article, Onehundredoctane... Nice work my friend

ochbay · 05-03-2012, 05:46 PM

sweet thats all the info i was looking to

i think i got the idea now thanks again everyone who helped me find the answer much appreciated

onehundredoctane · 05-04-2012, 06:48 AM

Quote:

Originally Posted by ochbay

sweet thats all the info i was looking to

i think i got the idea now thanks again everyone who helped me find the answer much appreciated

If you have any other quesitons hit me up via PM, I've been putting my twinscroll set up together myself, I've learned a lot in the process too.

05-02-2012, 05:28 PM	#1
ochbay Join Date: Feb 2012 Location: virginia Age: 29 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	divided and undivided turbos hey guys i have been reading alot on this site for some time now and now its time for my first post a couple months ago i bought a super clean zenki. after having some fun with it i decided i wanted to do a swap. originally i wanted an sr20 but after doing ALOT of research ive opted for a s2 rb25. my question is i was looking at turbo manifolds and noticed they say divided and undivided. and i realized i had no clue what they were talking about lol i feel i have pretty good knowledge on car and engines and turbo systems but realized i dont know alot of the background stuff ( im still learning) ive search on google and wat not but everything i see its just people asking can they put an undivided mani with a divided housing or vice versa. is anyone able to elaborate what exactly a divided and undivided turbos and or manis are. and the differences. Thanks in advance

05-02-2012, 06:02 PM	#2
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 33 Posts: 1,519 Trader Rating: (1) Feedback Score: 1 reviews	It has to do with maximizing the exhaust gasses as they leave the motor. So when they hit the turbo they do not conflict.. Hypothetical scenario, the manifold will allow the first and third runners to connect. and keep it divided from the 2 and 4th runners, until it hits the turbo. I understand the theory but cant really explain online, and im not sure if it helps performance or what specific applications it would be useful/detrimental __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

05-03-2012, 02:34 PM	#5
PoorMans180SX Zilvia.net Advertiser Join Date: Nov 2005 Location: Michigan Age: 33 Posts: 5,431 Trader Rating: (16) Rides Gallery: PoorMans180SX Feedback Score: 16 reviews	Scroll down and read the italicized font on this page. Twin-Scroll Turbo System Design Explained __________________ Build: http://zilvia.net/f/showthread.php?t=643065 Friends don't let friends buy knock-offs.

05-03-2012, 04:04 PM	#7
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 33 Posts: 1,519 Trader Rating: (1) Feedback Score: 1 reviews	Awesome freaking article, Onehundredoctane... Nice work my friend __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

05-02-2012, 08:41 PM	#3
ochbay Join Date: Feb 2012 Location: virginia Age: 29 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	Sweet thanks man ive looked almost everywhere and couldnt find much i think i get tue jysts of what ur sayin so its all turbine and mani related and has nothin to do with the compressor.

05-03-2012, 03:08 PM	#6
onehundredoctane Post Whore! Join Date: Oct 2006 Location: Greensborough, NC Posts: 2,783 Trader Rating: (3) Feedback Score: 3 reviews

05-03-2012, 05:46 PM	#8
ochbay Join Date: Feb 2012 Location: virginia Age: 29 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	sweet thats all the info i was looking to i think i got the idea now thanks again everyone who helped me find the answer much appreciated