2.5L Turbo

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Jan 10, 2003 | 02:25 AM

#16

nqwan

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From: NY

Car Info: o2 duburu arr exu

Quote:

Originally posted by Blue02WRX
Isnt the JDM STi redline 8k?!?! IM damn sure it is

sti7 was 8k. sti8 is 7.5k, atleast the jdm version with the twin scroll turbo is.

Jan 10, 2003 | 10:17 AM

#17

BADWRX

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From: Kandahar, Afghanistan

Car Info: 09 E90 M3 SEDAN w/DCT

Quote:

Originally posted by nqwan
sti7 was 8k. sti8 is 7.5k, atleast the jdm version with the twin scroll turbo is.

Really? That is bogus! We want 8K!

That blows.

Andy

Jan 10, 2003 | 10:20 AM

#18

Blue02WRX

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Twin Scroll turbo

OK what exactly is this twin scroll turbo I keep hearing about? Someone care to elaborate?

Jason

Jan 10, 2003 | 10:29 AM

#19

BADWRX

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From: Kandahar, Afghanistan

Car Info: 09 E90 M3 SEDAN w/DCT

Re: Twin Scroll turbo

Quote:

Originally posted by Blue02WRX
OK what exactly is this twin scroll turbo I keep hearing about? Someone care to elaborate?

Jason

It uses 2 exhaust streams and a different header/turbo/uppipe to allow 2 totally seperate exhaust streams to spool up the turbo quicker, yet retain high end efficiency. It is a mod to achieve low end grunt, while still screaming on top.

It is a cool setup IMO...we neet a few different things to make it work on the WRX...like a new oil pan.

The latest 4G63 Mitsu power plants use the Twin Scroll as well...and they are powerful motors.

Andy

Jan 10, 2003 | 10:46 AM

#20

Blue02WRX

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Twin Scroll turbo

Is there anywhere that has some pics of this setup and or drawings? Sounds like an interesting idea. As for the 4g63, how can this motor use this setup, since the turbo is right off the manifold. So lemme get this straight, on a EJ20 we have 2 sets of heads. So, two port get their own uppipe to the turbo as well as the other 2 ports, so its like a 2-1 header sort of that just ends at the turbo. Correct?

Jason

Jan 10, 2003 | 11:00 AM

#21

BADWRX

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Car Info: 09 E90 M3 SEDAN w/DCT

Yes...you are very close...it looks like 2 uppipes that come together on 1 flange, but with 2 holes in the flange instead of one. The flange that joins the turbo that is!

Here are some pics:

OH YEAH~

The new STI has an 8,000 RPM redline! Just for everyone's information!...

Andy

Jan 10, 2003 | 03:59 PM

#22

nqwan

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Joined: Nov 2002

Posts: 275

From: NY

Car Info: o2 duburu arr exu

Quote:

Originally posted by BADWRX
Yes...you are very close...it looks like 2 uppipes that come together on 1 flange, but with 2 holes in the flange instead of one. The flange that joins the turbo that is!

Here are some pics:

OH YEAH~

The new STI has an 8,000 RPM redline! Just for everyone's information!...

Andy

where did you hear that from? apexi' announced it as 7.5k.

Jan 10, 2003 | 04:01 PM

#23

BADWRX

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Car Info: 09 E90 M3 SEDAN w/DCT

It is right on the "Engine" sectgion of the soj/sedan/sti website. The heading on the EJ207 for the STI 8 sasy 8.000 RPM.
Andy

Jan 10, 2003 | 09:14 PM

#24

Blue02WRX

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Correct me if Im wrong, but the 04 US spec STi will have a Ej25 not a Ej20. So therefore the 8k redline for the JDM version isnt accutate for the US STi.

Jan 10, 2003 | 10:59 PM

#25

nqwan

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Joined: Nov 2002

Posts: 275

From: NY

Car Info: o2 duburu arr exu

Quote:

Originally posted by BADWRX
It is right on the "Engine" sectgion of the soj/sedan/sti website. The heading on the EJ207 for the STI 8 sasy 8.000 RPM.
Andy

thanks for the correction. i wish i could read japanese, it would make browsing subaru.co.jp a lot easier.

blue02wrx, thats what why we were talking about it. we're trying/guessing to find out the redline on the usdm sti.

Jan 11, 2003 | 07:49 PM

#26

Axis Power Racing

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From: St Louis, MO

although i haven't really heard about a solid redline figure, the way they built the valvetrain is much better than before and easily could handle an 8000 rpm limit. but if it makes it's max hp figure at like 5000, why rev it to the moon?

Jan 11, 2003 | 10:47 PM

#27

Blue02WRX

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Just because they can!! plus its cool to go hey check this out WAAAAAAAAAA8k, gotta love that!!

Jan 11, 2003 | 11:02 PM

#28

wrxtasy555

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From: College Park, MD

Car Info: 2002 Wrb WRX sedan

If you take a look at one of the pictures in the gallery, https://www.i-club.com/gallery/showp...papass=&sort=1 , you can clearly see that the redline is 7000rpms.

Todd