superstreeter

are their any pros or cons in running open or divided turbo housings ? example .96 open vs 1.15 divided ?

Camaro9969

iTrader: (12)

I dont think it matters much unless your actually going to utilize the divided housing.

JAX04

iTrader: (17)

I think you are going to get alot of responses verying from, NO, to hell yeah, or like the one above.

When i did my 5.3/S475 last summer i did it on a divided flange and used it, one bank into each side.

Now, i suppose the "proper" way is to combine the correct cylinders and all that jazz to have the correct pulses. yada yada.

If your curious if its going to be detrimental, NO, not at all. In your case, it would just be a little bigger housing.

If your worried about the small area between the to openings causing turbulence, knife edge the inside and be done.

Either way, it wont matter.

JAX04

iTrader: (17)

Also, keep in mind, if you did a real divided setup, one bank into each side, you will need two wastegates at that point. If you do it normal, then only one would be needed.

MUSTANGBRKR02

iTrader: (91)

You could also run a merge from both banks and use one gate.

JAX04

iTrader: (17)

LOL, and i ALWAYS forget about this in threads on this topic, lol.

I know why... To much work for me

gpr

iTrader: (6)

I've always wondered if running each bank into a divided flange would make much difference in spool time. Anyone try this? does it make a significant impact on a larger motor like an ls1?

MUSTANGBRKR02

iTrader: (91)

I am going from a non-divided to a divided setup on my car. Although i am also switching pipe size and routing so it won't be a great apples to apples comparison.

o2camaross

iTrader: (2)

If you merged a pipe from each bank for the gate, wouldn't that just eliminate the whole divided bank part?

superstreeter

I guess what I really want to know is,,,,,does a split divided housing make more power, or spool up faster than an open one,,,,cause why do they make open, and divided ?

there must be some reasoning behind it !

spoolin turbo

From what I have seen.
Power no, they make similar.
Spool on divided slightly better (divided housing on divided mani vs undivided housing on divided manifold).
Trq a big difference, divided made more and faster BUT the trq falls off sooner the divided and the open holds it flatter slightly longer.

You wont get a true back to back because a 1.00 divided and 1.00open are not really the same size.

Camaro9969

iTrader: (12)

I run divided housing as you can see here....ill tell you I have a s480 and it starts spooling at 3100 I never thought it would be possible but I would think twin scroll is the way to go. They didn't make the turbo with a divided housing just for looks. As superstreeter said there must be a reason

3pedals

iTrader: (3)

I did the same - kept each bank seperate, here is a mockup pic of mine: