XxRoCkMaNxNEOxX

iTrader: (3)

I know this manifold has been just released, but what would be the benefit of running this one compared to a topmount twinscroll? Spool time? Max HP? Size of DP...etc.?

b00stedbyFastrax

will be getting one soon. let you know.

boostedcivicsir

that manifold can also facilitate a 372/42r into a crx. and still have the benefit of the twin scroll.

TheShodan

iTrader: (14)

Interesting design. Like back in 99.

Schister66

hahaha...ruining the fun yet again with your logic

EARLdaSQUIRREL

care to explain the comment


would one of these be better for a 30r(with twin scroll) than say the 30r with a tial housing

extralargenog

iTrader: (1)

Its not exactly a new design by any means... I thought the same thing, but if it works, why fix it ---

sp00led

I thought the 30r was only available in a T3 footprint. I know the 35r can be T3 or T4.

extralargenog

iTrader: (1)

30r is only t3. you are correc t

95dxsir2

You have made the light come on.......next set up

SD_Lurker

iTrader: (4)

Mainly for street applications and the importance of running a filter on the STREET.

TheShodan

iTrader: (14)

It's like what extralargenog stated, its not really a new design at all, really. that's been around for almost 10 years. The fact that it is divided housing (not "twin scroll"-see sig)) would assist with turbos of larger size, but considering our smaller displacement engines (and yes, 2.0 litres is small, get used to it), it would still have maximum pressure at higher than say 4700rpms or above depending upon the turbo used.

EARLdaSQUIRREL

can you explain the differences than? between twin scroll and divided housing, i feel this thread would be a great place for it to be explained

downeyballz

i also thought twin scroll and divided housing were the same thing. im gonna do some rechearch

extralargenog

iTrader: (1)

Twin scroll is NOT simply a divided housing....

It derives its name from the geometry of the exhaust gas inlet into the turbine. Two different-sized scrolls are generally used, a primary and a secondary. The primary is open for low-speed operation, and both for high-speed use. This creates the ability of the Twin scroll setup to be a small A/R housing at low speeds and a large A/R at higher speeds.

Divided is simply a split housing that you can pair runners to in order to aid spool.

Totally different

HiProfile

Twin scroll refers to the entire system - half the cylinders pumping into one half of the turbine. Divided refers to the housing & flange. Kinda like saying 'tranny' and 'drivetrain', one is part of the other.

The benifits of a twin-scroll setup is listed in many threads & web pages - its rather simple. Due to less volume (half in this case) for each exhaust pulse fill, you reach peak exhaust pressure faster to spool the turbo. You also prevent one exhaust pulse (opening valve) from interfering with an overlap event (closing valve), so less issues with reversion as well as better scavenging. AND since you can size the housing & runners a bit larger, you end up with better overall flow.

So you get:
*faster spool
*more power
*better scavenging
*less reversion

Its obvious why this is seen on V-motors and I-6's - its much easier to divide the cylinder pulses properly.

XxRoCkMaNxNEOxX

iTrader: (3)

looks good guys. keep em coming

leach

geoff says there 3 to 4 weeks out but my name is on one

XxRoCkMaNxNEOxX

iTrader: (3)

thats not bad let me know how it goes with your setup.

POORMANT

ok new to this but is there a difference between it being bottom compared to top im tryin to decide on what manifold i want and im using h1e holset turbo

96 GSR-T

I would imagine the bottom mount will spool the turbo faster vs the topmount mainly due to the runners being much shorter, it is probably lighter too. I wonder if it shares the same collector length/design as the topmount or if that area has been revised as well. I am very interested in this pending the price, a topmount is just too baller for me