Welcome to the North American Subaru Impreza Owners Club Thursday April 24, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 10-29-2001, 12:03 PM   #1
MY99 2.5GT
Scooby Specialist
 
Member#: 5030
Join Date: Mar 2001
Chapter/Region: MAIC
Location: Martinsburg, WV, USA
Vehicle:
1999 Legacy 2.5GT
05 Legacy GT 06 Armada

Question Part Number for 3.0H6 and STI 6-speed?

Does anyone have part numbers for the new 3.0 H6 and the STI six speed?

If SOA doesn't come out with a pleasing high performance Legacy in the next couple years I'm going to take matters into my own hands.

Brad
* Registered users of the site do not see these ads.
MY99 2.5GT is offline   Reply With Quote
Old 10-29-2001, 01:01 PM   #2
GooseMan
Scooby Specialist
 
Member#: 2462
Join Date: Sep 2000
Chapter/Region: SCIC
Location: Los Angeles/Montreal
Vehicle:
2012 Volvo S60 T5
2005 Triumph Sprint ST

Thumbs up WOAH!!!

......someone's up to no good!!!!!!


THIS, I gotta see!
GooseMan is offline   Reply With Quote
Old 10-29-2001, 01:10 PM   #3
5doorman
Scooby Newbie
 
Member#: 8401
Join Date: Jul 2001
Location: Nanticoke, PA
Vehicle:
1996 Impreza (base)
hunter green

Default

I heard the Legacy is also getting a turbo in the near future from a someone at a dealer. Not the B4 RSK, but something with some balls. Problem with the H6 is they only make them in autos, so there's no bellhousing for manual trannies to bolt up to it. I'd love to make an H6 powered Impreza....

Andrew
5doorman is offline   Reply With Quote
Old 10-29-2001, 01:36 PM   #4
JGard
pooptastic
 
Member#: 1904
Join Date: Jul 2000
Chapter/Region: TXIC
Location: Austin, TX
Vehicle:
2014 Lexus IS 350
'02 BMW R1100S

Default

ummm...pretty sure that tranny won't mate to the H-6. Have you checked for that? cause as we all know, the 3.3 in the SVX didn't have an existing tranny that fit to it...
JGard is online now   Reply With Quote
Old 10-29-2001, 01:45 PM   #5
Julian
Scooby Specialist
 
Member#: 1182
Join Date: Mar 2000
Location: Ventura, CA
Vehicle:
MY00 RS
BRP

Default

Isn't the SVX tranny the same 4EAT auto?
Julian is offline   Reply With Quote
Old 10-29-2001, 02:02 PM   #6
JGard
pooptastic
 
Member#: 1904
Join Date: Jul 2000
Chapter/Region: TXIC
Location: Austin, TX
Vehicle:
2014 Lexus IS 350
'02 BMW R1100S

Default

i don't know...but I do know that the manual tranny didn't fit...

and if it fits our engine, and the 4EAT that comes on the WRX fits on our engine, that would lead us to believe it's different

hey, I really don't know for sure here...but i just want to throw out that warning, as it is something to look into before going out to buy these parts.
JGard is online now   Reply With Quote
Old 10-29-2001, 05:17 PM   #7
XT6Wagon
Scooby Specialist
 
Member#: 524
Join Date: Nov 1999
Location: WA
Vehicle:
04 STi
White

Default

Uh, guys why wouldn't the motor mate up? If it bolts to a normal automatic subaru tranny, why in god's name would it not bolt up to a normal manual subaru tranny? The "bellhousing" is cast into the block halfs on all motors startign with the EJ. I don't know if this is the case with the EZ-30 but as it stiffens the motor and makes it shorter, I can't see them doing it any other way.just take the flex plate off and bolt on a flywheel. May need to have the flywheel done, if the bolt pattern on the end of the crank is different than the EJ one.
XT6Wagon is offline   Reply With Quote
Old 10-29-2001, 06:29 PM   #8
Longshot
Scooby Specialist
 
Member#: 2359
Join Date: Sep 2000
Chapter/Region: NESIC
Vehicle:
2001 Impreza 2.0 WRS

Default

Well regardless of bolting up, the torque produced by the H6 is available very early on...which means it breaks trannies, which would make sense as to why it has yet to be attached to even a 5-speed...

This could be an expensive alternative to waiting for Subaru to bring over a legacy with more balls. Not that I'm saying you can't or shouldn't.. just giving my .02 cents

Korey
Longshot is offline   Reply With Quote
Old 10-29-2001, 08:49 PM   #9
White Wolf
Scooby Newbie
 
Member#: 5598
Join Date: Apr 2001
Location: Cleveland, Ohio
Vehicle:
2000 Forester
Cyan Red & Mud Brown

Thumbs up

hmmmmmm. I like the thinking in hear!! If we can ever get this sorted out I'd be slipping that combo into my Forester.


White Wolf

Please Recycle
White Wolf is offline   Reply With Quote
Old 10-30-2001, 09:09 AM   #10
MY99 2.5GT
Scooby Specialist
 
Member#: 5030
Join Date: Mar 2001
Chapter/Region: MAIC
Location: Martinsburg, WV, USA
Vehicle:
1999 Legacy 2.5GT
05 Legacy GT 06 Armada

Default

Well guys I heard somewhere that JC Sports was able to bolt up an SVX engine to a manuel tranny. I have yet to see and article on that one. I was asking similar questions about this some time ago and had a couple responses about what JC Sports had done. Unfortunitely no links to articles proving this.

Anyway, the STI 6-speed has been praised for its ability (in its stock form) to handle amazing power numbers. Thats why I chose that.

The H6 3.0 is noted to be smaller than the EJ25 but a lot more powerful also (theoretically) a better platform for forced induction. In actuality this engine is an EJ20 just with 2-more cylinders.

About the Forester, I have heard reliable rumors that it will be getting a beefier engine within the next year or so. If I recall correctly the rumor was to put the H6 in their.

The rumor for the Legacy was that the EJ20 WRX engine (227hp) will be in by the 2005 model year. I would say I should be in the market for a new car by 2005. If they have a significantly higher power output than the current Legacy then I will fork over the $28-$30k they want for it. However if they come out with this shrimpy EJ20 turbo that in the WRX I would much rather pay $6-$8 and keep my current car (if its still in good shape) and transplant a killer NA engine and tranny ready for power.

Truthfully guys. Which would you rather choose.

A. 227 @ 6000rpm turboed Horsepower in a 3500lb car
217 @ 4000rpm

or

B. 212 @ 6000rpm N/A horsepower in my 3100lb car
210 @ 4400rpm

These two setups would be very similar as far as performance. Could you imagine then installing the Forced Air Technologies 450hp twin turbo setup they built for the SVX. And all for the a lot cheaper then the price of a new Legacy.

One of my good friends is soon to be a Subaru Mechanic. As soon as his dealership brings on Subaru they will get all of the technical repair manuels for all of subarus products. As soon as he gets those we will be doing some in depth research comparing sizes and specs to see if my idea will work. I'll keep you posted.

By the way if anyone has part numbers that would be pretty helpful.

Brad
MY99 2.5GT is offline   Reply With Quote
Old 10-30-2001, 12:02 PM   #11
XT6Wagon
Scooby Specialist
 
Member#: 524
Join Date: Nov 1999
Location: WA
Vehicle:
04 STi
White

Default

The EZ-30 IS NOT a EJ-20 with two more cylinders. Its a whole new engine. It is not know how capible the motor is, so if you turbo it you will be traveling a lonely expensive road. Also it IS longer than a EJ motor. This isn't a problem at all for the legacy, but the hood line may be an issue on the impreza.
XT6Wagon is offline   Reply With Quote
Old 10-30-2001, 12:45 PM   #12
RaceCarRiot
Scooby Specialist
 
Member#: 6542
Join Date: May 2001
Chapter/Region: South East
Vehicle:
1997 Ver IV
silver

Default

the 3.0 H6 is less than an inch (0.8") longer than the 2.5L 4 cylinder.

i believe all that was needed to accomodate it into the US legacies was a stronger crossmember to accomodate the extra 100lb.

good luck!
RaceCarRiot is offline   Reply With Quote
Old 10-30-2001, 01:15 PM   #13
MY99 2.5GT
Scooby Specialist
 
Member#: 5030
Join Date: Mar 2001
Chapter/Region: MAIC
Location: Martinsburg, WV, USA
Vehicle:
1999 Legacy 2.5GT
05 Legacy GT 06 Armada

Default

What I meant about the H6 3.0 beeing an EJ2.0 with 2 more cylinders was bore and stroke. I was told bore and stroke of the pistons in the H6 were the same as the EJ20 just 2-more pistons in there. As far as forced induction goes, that wouldn't be the first thing I do. Plus by that time we'll see what kind of development takes place for the H6.

Brad
MY99 2.5GT is offline   Reply With Quote
Old 10-30-2001, 01:38 PM   #14
XT6Wagon
Scooby Specialist
 
Member#: 524
Join Date: Nov 1999
Location: WA
Vehicle:
04 STi
White

Default

Nope, the bore and stroke are also different. I think it has a smaller bore and a shade more stroke. I could be wrong, but I know it IS different. Also there will no be any larger displacments by boring the motor out, as its already maxed. So nothing like the EJ-22/EJ-20 will happen.
XT6Wagon is offline   Reply With Quote
Old 10-30-2001, 01:41 PM   #15
XT6Wagon
Scooby Specialist
 
Member#: 524
Join Date: Nov 1999
Location: WA
Vehicle:
04 STi
White

Default

Nope, the bore and stroke are also different. I think it has a smaller bore and a shade more stroke. I could be wrong, but I know it IS different. Also there will no be any larger displacments by boring the motor out, as its already maxed. So nothing like the EJ-22/EJ-20 will happen. The EZ-30 has a bore of 89.2mm and a stroke of 80mm. The EJ-20 is 90mmX75mm.
XT6Wagon is offline   Reply With Quote
Old 10-30-2001, 02:57 PM   #16
MY99 2.5GT
Scooby Specialist
 
Member#: 5030
Join Date: Mar 2001
Chapter/Region: MAIC
Location: Martinsburg, WV, USA
Vehicle:
1999 Legacy 2.5GT
05 Legacy GT 06 Armada

Default

Wow even better. Smaller bore longer stroke.

I remember when SCC did an initial assessment on the ability of the EJ25 to handle boost they said everything looked very strong however the bore was overly large compared to stroke. They could forsee that setup beeing knock prone.

I like what I hear.

Anybody know of a part # yet?

Brad
MY99 2.5GT is offline   Reply With Quote
Old 10-30-2001, 04:20 PM   #17
sybir
Scooby Specialist
 
Member#: 4615
Join Date: Mar 2001
Chapter/Region: BAIC
Location: Don of the Wagon Mafia
Vehicle:
05 STi, 97 Leg OB

Default

ya know, i've got a 97 OB (EJ25, 4EAT) and my dad has a 01 OB (EZ30, 4EAT) and i swear that in a stoplight drag they're pretty much even.....50 horses more can't even pull 300 pounds more? In driving it, I've found the motor to be smooth and refined, but it doesn't feel all that powerful; it's actually way too similar to my current motor (phase 1 DOHC) in that you've really got to rev it to get it going; sure, it's not a honda motor, but a 3100 pound car needs more low end torque, IMO.

That said, I'd kill to drive that car if you got it built, but I'm gonna wait for a turbo BH........
sybir is offline   Reply With Quote
Old 10-30-2001, 04:28 PM   #18
XT6Wagon
Scooby Specialist
 
Member#: 524
Join Date: Nov 1999
Location: WA
Vehicle:
04 STi
White

Default

sybir, the VDC is north of 3,700lbs. Of course its still slow for the rated power to wieght as my SHO on 220HP and 3,700lbs clocks a mid 7 sec 0-60 instead of a mid 8 sec.

The longer stroke means more stress at higher RPM, and the smaller bore means it needs more CFM flow from the heads and turbo for the same displacement. A race motor has a sewer pipe bore and a short stroke. A Econobox motor has a small bore and a long stroke.
XT6Wagon is offline   Reply With Quote
Old 10-30-2001, 08:30 PM   #19
Bankheist
Scooby Guru
 
Member#: 2237
Join Date: Aug 2000
Chapter/Region: TXIC
Location: DFW
Vehicle:
2000 COBB Tuned GC8
2012 Hyundai Veloster

Default

here's an idea for you power hungry peeps.

2.5RS + 3.0H6 + Custom cams, custom heads, custom, custom, custom, custom. And you get a FAWKING BADASS RIDE!
Bankheist is offline   Reply With Quote
Old 10-31-2001, 03:12 AM   #20
Kostamojen
Scooby Guru
 
Member#: 2272
Join Date: Sep 2000
Chapter/Region: BAIC
Location: haha XD
Vehicle:
2013 Subaru 599 :P
Galaxy Blue Sexy

Default

Im gonna glue two EJ20 turbos together to make a EJ40 H8 twin turbo...

Anyone wanna help?
Kostamojen is offline   Reply With Quote
Old 10-31-2001, 09:35 AM   #21
XT6Wagon
Scooby Specialist
 
Member#: 524
Join Date: Nov 1999
Location: WA
Vehicle:
04 STi
White

Default

Nice thought, but you will need to use a 6cyl. This is because you need to chop off the front row of cyl of one, and the back row of cyl on the other. Then you weld the two together, usualy with a fantasticly expensive process. Don't forget the billet crank, and cams that will be needed.
XT6Wagon is offline   Reply With Quote
Old 10-31-2001, 10:20 AM   #22
Tkacik
Scooby Guru
 
Member#: 847
Join Date: Feb 2000
Chapter/Region: South East
Location: Greensboro, Georgia
Vehicle:
'06 Titan Crew Cab
'03 Odyssey - EXL/RES

Default

Quote:
Originally posted by Kostamojen
Im gonna glue two EJ20 turbos together to make a EJ40 H8 twin turbo...

Anyone wanna help?

I was thinking about the same mod....what kind of glue are you going to use
Tkacik is online now   Reply With Quote
Old 10-31-2001, 11:09 AM   #23
ylexot
Scooby Specialist
 
Member#: 6878
Join Date: May 2001
Location: St Inigoes, MD, USA
Vehicle:
2002 MBP 2.5RS
1994 GMC Sonoma

Default

Quote:
Nice thought, but you will need to use a 6cyl. This is because you need to chop off the front row of cyl of one, and the back row of cyl on the other. Then you weld the two together, usualy with a fantasticly expensive process. Don't forget the billet crank, and cams that will be needed.
Sounds like what Ford did for the GT90. They took 2 V8s, chopped two cylinders off each, welded them together to make a single V12. I'm still disappointed that they didn't produce them. Oh well, it would have been a Ford anyway.

You could also have one engine in front driving the front wheels and one in the back driving the rears. No need for a center diff then. Isn't that how the Escudo Pike's Peak car is set up?
ylexot is offline   Reply With Quote
Old 10-31-2001, 11:38 AM   #24
MY99 2.5GT
Scooby Specialist
 
Member#: 5030
Join Date: Mar 2001
Chapter/Region: MAIC
Location: Martinsburg, WV, USA
Vehicle:
1999 Legacy 2.5GT
05 Legacy GT 06 Armada

Default

Probably the reson for the poor performance of the H6 is the sucky Automatic Transmission.

I'm sure it could use a little more aggressive cam timing. Who knows what kind of ultra restrictive intake air delivery system that thing has. The exhaust is probably another drawback.

I could see 230-250 Hp out of that engine easily if it could breath right and if I played around with a few other small things.

I'm willing to bet that would be an amazingly fun ride in a 3100lb car. Probably very reliable too.

Brad
MY99 2.5GT is offline   Reply With Quote
Old 11-01-2001, 01:58 AM   #25
kgb
Scooby Specialist
 
Member#: 1366
Join Date: Apr 2000
Chapter/Region: VIC
Location: Delta, BC, Canada
Vehicle:
2000 RS-T -> RSTi-8
Blue Ridge Pearl

Lightbulb

STi 6 spd is probably the only stock tranny that can withstand the torque down low. But if you go aftermarket, you can get better tranny though for the price of a STi 6 spd.

H6 in a GC8 RS would be cool, just that you would need to rebalance the weight around as the RS is already 60/40. Twin H6 each driving an axle would be wicked - just don't ask me how you can make that thing work though
kgb is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
F/S: (CA) Brand New STi Grp. N Engine and STi 6-speed Transmission Mount Combo!! CALIBAN Engine/Power/Exhaust 8 03-05-2009 02:22 PM
FS: 06-07 STi WRB fog covers and STi 6-speed knob Dforce SCIC Private Classifieds 0 09-04-2008 11:19 PM
03 wrx with sti short block and sti 6 speed tranny and 06 gsxr600 motorcycle platinum03wrx/sti Private Vehicle 'For Sale' Classifieds 4 02-16-2008 10:03 AM
in 3-4 months, STi 6 speed White 2.5rs Private 'Wanted' Classifieds 1 05-26-2004 03:03 PM
Need help Sti part number for Steel 3rd and fourth shift fork. gary501 Transmission (AT/MT) & Driveline 3 04-05-2002 09:10 PM


All times are GMT -4. The time now is 11:29 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.