Divided Flange Question ...

[snowmansdsm09]

I just bought a t3/t4 turbo w/ a divided flange. Just want to know before i order my manifold if it needs to be divided also, or can it just be open?
I dont see the point why the manifold would have to be divided also when the flange on the turbo will divide the air itself...

LMK

By the way i checked online, didnt find any 100% answer. . .

Thanks in Advance !

 

[hostile]

You probably have a straight t4 turbo. What AR is on the turbine housing?

There are a few divided t3 housings but they are not very popular on performance turbos built in the US. It is actually used in some stuff overseas.

If you do infact have a t4 housing, There are only a few divided t4 manifolds on the market right now.

www.ongreenperformance.com has the hks clone for 900, and www.dnperformance.com has a ss divided t4 manifold for 600.

Both of these will require fabrication of a downpipe and the use of an extrenal gate.

 

[Shearer]

Good luck finding a divided T3 manifold. I've had a couple people ask for them since they seem to come on the Master Power turbos quite a bit. You'll be sacrificing a little bit of spool and transient response time using a non-divided collector, but with a tiny t3 housing I think the difference will be a moot point.

 

[Maglin]

Most all Full T4's I've personally seen use a divided inlet TH. I have a TO4E with a divided inlet. You can use a open manifold and just port the divider to a nice rounded edge and that should help with turblance induction in the inlet of the turbine housing. You don't want a sharp edge on the divider as the high heat will crack it and can even break pieces of it off and you don't want that going through your turbo.

 

[snowmansdsm09]

sorry guys i was out of town.

Turbine Wheel:
Exducer: 2.54"
Mayor : 2.89"


Compressor Wheel:
Exducer: 2.23"
Mayor : 3.31"

Turbine Housing:
.70 " DIVIDED TANG FLANGE "

A/R is .50 / .70

 

[snowmansdsm09]

Ok I've been directed to Round off the divider in the turbo exhaust housing so it will be more aerodynamic and just use a undivided reg. t3/t4 manifold.

Will this make the turbo spool slower because its supposed to have equal divided air coming thru the intake manifold ?

 

[hostile]

.70 divided tang sounds like a t4 housing to me.

If you want to take advantage of the twin scroll hosuing you should run a divided manifold.

 

[snowmansdsm09]

Well ive been told those manifolds are like + $900... im not spending no more then 500$

 

[Bostedquest]

I have only seen 1 divided T3 turbine.
All others are T4.

This is all up to you, but that big of a turbine, your gonna need to get into the RPM's before you see anything of boost, especially with a .70 ar...
That might be where you intended your boost to be at, but just so you know.

I stuck to a T3 turbine at .48 to keep the spool nice and low, but with a T4E compressor, it will keep pumping up high.

Most divided tangs are for larger displacement engines that the cylinders are divided to provide exhaust pulses when they are most efficient.

 

[snowmansdsm09]

The shop i bought it from says its spools fast for the size of the turbo. But im guessing he assumed i was gonna buy the right manifold for it. (divided manifold)

 

[snowmansdsm09]

I've been looking into the bullseye housing to make it a mistubishi inlet. So i can just buy an evo manifold. Just worried about clearence issues, its a pretty big turbo.

 

[sho_tyme_psi]

First of I would go to a parts store such as AZ/advance and ask for a svo/turbocoupe turbo gasket to compare if it matches, if it does you have a t-3 ex.. Mine has a .84 tanged exhaust with 3in v-band and a T-3 print. I'm going to portmatch and taper the tang to help with flow , as far as the manifold it does not have to be divided it will work fine without it.
Hope this may have help you in your quest.

 

[snowmansdsm09]

I just think that divider is gonna disrupt the exhaust flow, unless i get a divided manifold.

Think i could take it to a shop and have them cut out the divider altogether? and then smooth port the rest ?

 

[snowmansdsm09]

Ok it seems I need a WISEMAN in here because NO ONE seems to know for sure the answer to my delimma.

WE NEED A WISEMAN BUTTON !

 

[hostile]

Not to be a dick, but it sounds like you got ripped off. The turbo you got is some oddball turbo, probably off a truck. You bought a turbo and you didn't even know if it was t3 or t4?

The compressor and turbine wheel are not any of the popular wheels for a dsm.

 

[snowmansdsm09]

I'm not lookin for someone to identify my turbo. I know what turbo i have. T3/t4e O trim ---- I just need to know if i need to buy a twin scroll manifold...

The EVO VIII uses a divided housing.

" The compressor and turbine wheel are not any of the popular wheels for a dsm. "

Sorry im not going the "popular" way about my dsm

 

[snowmansdsm09]

BTW... its a T3 Exhaust Housing.

 

[Bostedquest]

Ok it seems I need a WISEMAN in here because NO ONE seems to know for sure the answer to my delimma.

WE NEED A WISEMAN BUTTON !

well, you have not posted anything as far as pics...
you have not posted about trying various turbo flange gaskets...
you have not posted the type of outlet it has...

so just what do want us to use to identify it? psychic powers?

we (I) have posted what I know about various turbo bodies... what else do you want with the very little info you have given?

 

[snowmansdsm09]

ALL I NEED TO KNOW IS IF I NEED TO USE A TWIN SCROLL MANIFOLD ON A T3 TWIN SCROLL EXHAUST HOUSING ! Simple... NO ONE IS INDENTIFYING ANYTHING.
I know what turbo i have, I know everything about the turbo that i need to know except that can i use a REGULAR t3 manifold on a twin scroll.

IF NOT, then i'll buy a bullseye housing. No one needs to see a pic of the turbo, no one needs to know anything about the turbo. JUST THAT ITS TWIN SCROLL.

Screw all this bs, i'll just get a bullseye housing for it.

thanks, yall helped me make my decision one way or another.

 

[suicidal2af]

You don't NEED to, however:

1) Twin scroll housing and manifold will improve spool.
2) Twin scroll housing and open manifold will create turbulence, hurting spool.

 

[Bostedquest]

ALL I NEED TO KNOW IS IF I NEED TO USE A TWIN SCROLL MANIFOLD ON A T3 TWIN SCROLL EXHAUST HOUSING ! Simple... NO ONE IS INDENTIFYING ANYTHING.
I know what turbo i have, I know everything about the turbo that i need to know except that can i use a REGULAR t3 manifold on a twin scroll.

IF NOT, then i'll buy a bullseye housing. No one needs to see a pic of the turbo, no one needs to know anything about the turbo. JUST THAT ITS TWIN SCROLL.

Screw all this bs, i'll just get a bullseye housing for it.

thanks, yall helped me make my decision one way or another.

actually that question was answered several times over...

it can create a distrubance/turbulance in flow.
Will you notice it? probly not any more than the HUGE SIZE of the turbine section anyway.
and with that reply I hope people let you calm down and ignore you for a while...

 

[snowmansdsm09]

You don't NEED to, however:

1) Twin scroll housing and manifold will improve spool.
2) Twin scroll housing and open manifold will create turbulence, hurting spool.

THANK YOU ! thats all i wanted to know...

CASE CLOSED - Getting a bullseye housing.

 

[hostile]

I'm not lookin for someone to identify my turbo. I know what turbo i have. T3/t4e O trim ---- I just need to know if i need to buy a twin scroll manifold...

QUOTE]

O trim = 2.296/2.920

The specs you listed above do not match an O trim turbine wheel.

Turbine Wheel:
Exducer: 2.54"
Mayor : 2.89"

 

[snowmansdsm09]

The question was about the Turbine HOUSING.... HOUSING... HOUSING!
I have since measured it, and it is a "P" trim turbine. But that is besides the point...

Question once again was do i need a divided manifold for a divided flanged turbo?
Or will the turbo spool fine w/out the divider in the mani?

No matter what size turbo, turbines, ect... thats all irrelevant to my question in this instance!

This thread can be locked @ anytime now, i've talked to bullseye and they have given me the answer i needed to know w/out knowing @ all what turbo i'm using...