Welcome to the North American Subaru Impreza Owners Club Monday June 27, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Subaru Models > Legacy Forum

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 06-05-2001, 05:46 AM   #1
2.5GT
Scooby Specialist
 
Member#: 2697
Join Date: Oct 2000
Location: Olney, MD. Work in McLean, VA
Vehicle:
2000 Celica GT-S
Spectra Blue

Post Graph of horsepower/torque curve for phase I 2.5L?

Does anyone have a downloadable graph of the horsepower/torque curve for the phase I DOHC 2.5L engine?

THanks,

Jason
* Registered users of the site do not see these ads.
2.5GT is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 06-05-2001, 11:32 AM   #2
jacobhorn
Scooby Specialist
 
Member#: 5122
Join Date: Mar 2001
Location: Seattle, WA Maple Leaf
Vehicle:
1998 Legacy GT LTD
'02 HD Softail Deuce

Exclamation

What is the Phase I 2.5 engine? What is the Phase II Engine?
jacobhorn is offline   Reply With Quote
Old 06-05-2001, 01:15 PM   #3
MY99 2.5GT
Scooby Specialist
 
Member#: 5030
Join Date: Mar 2001
Chapter/Region: MAIC
Location: Martinsburg, WV, USA
Vehicle:
1999 Legacy 2.5GT
12 Legacy GT 13 Armada

Post

My car has a phase-II block with Phase-I DOHC Heads.

Ha Ha.
MY99 2.5GT is offline   Reply With Quote
Old 06-05-2001, 02:03 PM   #4
Legacy STi L
Guest
 
Member#:
Question

This might be a question better asked in the NA powertrain forum. I am very interested in seeing the actual difference between the two graphs.
TIm
  Reply With Quote
Old 06-05-2001, 02:25 PM   #5
GTBGUY
Scooby Specialist
 
Member#: 2003
Join Date: Aug 2000
Location: Calgary, Alberta, Canada
Vehicle:
'99 BGP Legacy GT
'98 QS Legacy L (auto)

Post

Yes there are some hybrid engines out there w/ the Phase 1 DOHC heads and the Phase 2 EJ25 block. Essentially the DOHC power curves will all be the same even if it's different blocks. What really changes the torque curve/power curve are the camshafts.

Shifting from the DOHC to the SOHC allowed 80% of the max torque to be available at 2XXXrpm's rather than the old DOHC which was 3XXXrpm's
GTBGUY is offline   Reply With Quote
Old 06-06-2001, 12:59 AM   #6
JoeT
Scooby Specialist
 
Member#: 3956
Join Date: Feb 2001
Location: Toronto, Ontario, Canada
Vehicle:
2000 Turbo Legacy GT
Titanium

Cool

Phase 1 = DOHC
Phase 2 = SOHC

JoeT is offline   Reply With Quote
Old 06-06-2001, 05:11 AM   #7
2.5GT
Scooby Specialist
 
Member#: 2697
Join Date: Oct 2000
Location: Olney, MD. Work in McLean, VA
Vehicle:
2000 Celica GT-S
Spectra Blue

Post

Well, no luck in the NA Forum. Posted the same day I posted here, but that post is almost bumped to out of the forum already with no replies. Oh well.

Jason
2.5GT is offline   Reply With Quote
Old 06-06-2001, 10:05 AM   #8
jacobhorn
Scooby Specialist
 
Member#: 5122
Join Date: Mar 2001
Location: Seattle, WA Maple Leaf
Vehicle:
1998 Legacy GT LTD
'02 HD Softail Deuce

Smile

What year Legacys have the Phase I engine? What years have the Phase II engine? Thanks
jacobhorn is offline   Reply With Quote
Old 06-06-2001, 10:24 AM   #9
2.5GT
Scooby Specialist
 
Member#: 2697
Join Date: Oct 2000
Location: Olney, MD. Work in McLean, VA
Vehicle:
2000 Celica GT-S
Spectra Blue

Post

Actually, there were three engines made for the 2.5GT. The 96 GT had a DOHC 2.5L that made about 150-155hp. 1997 GT's were given the "improved" DOHC 2.5L that people refer to as having the phase I block. This engine made about 10 more hp bringing the total to 165hp. In 98 there were no real changes but the 99 GT's were "blessed" with the phase II block and the DOHC heads (there is still speculation as to whether the DOHC heads flow better). Horsepower/Torque ratings did not change.

Finally, the 00 GT's and on were given the whole phase II engine (SOHC head and phase II block). Torque was up 4 lb/ft (with a significant increase in low-midrange torque) and horsepower stayed the same.

Jason
2.5GT is offline   Reply With Quote
Old 06-07-2001, 06:22 AM   #10
Legacy STi L
Guest
 
Member#:
Wink

Jason, you can't forget that the MY '96 EJ25 with the 155hp requierd Premium gas. So the change that took place in the MY'97 EJ25 bumping the hp to 165 plus lowering the Octane rating was a pretty big step.
TIm
  Reply With Quote
Old 06-08-2001, 03:14 PM   #11
Radio Flyer
Scooby Specialist
 
Member#: 374
Join Date: Oct 1999
Chapter/Region: SWIC
Location: Albuquerque, NM
Vehicle:
'98 2.5 GT Wagon
Rio Red

Exclamation

After four years, I finally scanned in the graph from the brochure...



**- Eric
****'98 2.5 GT Wagon - <a href="http://members.i-club.com/ViewMemberPics.cfm?MemberID=143" target="_blank">Pics</a> - <a href="http://www.jeneric.ws/eric/radioflyer.htm" target="_blank">Page</a> -
****ICQ #: 9292601

[ June 08, 2001: Message edited by: Radio Flyer ]
Radio Flyer 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
Long term reliability of rebuilt Phase 1 2.5L engine grzydj Legacy Forum 74 01-03-2012 09:56 AM
FS NYC: Valve cover gasket set for N/A 2.5L DOHC Phase I $25 rice h8r Tri-State Area Private Classifieds 5 01-03-2010 05:18 PM
FS: Valve cover gasket set for N/A 2.5L DOHC Phase I $25 rice h8r Engine/Power/Exhaust 5 01-03-2010 05:18 PM
How to improve low end torque of Phase II 2.5L ?? w chapman Normally Aspirated Powertrain 22 09-28-2007 09:37 PM
('93-'01) Graph of horsepower/torque curve for phase I 2.5L? 2.5GT Impreza Forum 3 06-08-2001 12:00 AM

All times are GMT -4. The time now is 06:43 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.