Welcome to the North American Subaru Impreza Owners Club Friday April 18, 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 04-26-2004, 12:59 PM   #1
phunkeeHomosapien
Scooby Specialist
 
Member#: 56061
Join Date: Feb 2004
Chapter/Region: RMIC
Location: dirty south,UT
Default sohc on a 98 Rs?

I might need to replace the heads on my 98rs can use the SOHC's? also what other heads might i look into getting?
thanks
* Registered users of the site do not see these ads.
phunkeeHomosapien is offline   Reply With Quote
Old 04-26-2004, 01:38 PM   #2
Pat L.I.
Scooby Specialist
 
Member#: 20498
Join Date: Jun 2002
Chapter/Region: NESIC
Location: West Haven CT
Vehicle:
2006 WRX TR
Aspen White

Default

Pat L.I. is offline   Reply With Quote
Old 04-26-2004, 01:57 PM   #3
phunkeeHomosapien
Scooby Specialist
 
Member#: 56061
Join Date: Feb 2004
Chapter/Region: RMIC
Location: dirty south,UT
Default

hey i would love to go down to cobb (I live in Slc) and pick some of those up but i dont have rediculous amounts of money to spend on over priced heads

does any one know about the SOHC's or a place to buy AFFORDABLE dohc heads?
phunkeeHomosapien is offline   Reply With Quote
Old 04-26-2004, 02:16 PM   #4
goobie
Scooby Specialist
 
Member#: 8273
Join Date: Jul 2001
Location: White Rock BC, Canada
Vehicle:
2006 WRX Wagon
WRB

Default

I could be wrong but I don't think you'll get Phase II (SOHC) heads to bolt up to a Phase I (DOHC) block. I don't think the bolt pattern is the same among other things... Someone please correct me if I'm wrong.

Chad
goobie is offline   Reply With Quote
Old 04-26-2004, 02:21 PM   #5
powerlabs
Scooby Specialist
 
Member#: 45790
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2006 Corvette C6 Z51
SUPERCHARGED

Default

How about re-milling your own? SUPPOSEDLY it is not that difficult; someone here in my University milled the heads of a Ford Focus 2L inline 4 engine with some instructions he got off the net...
I'm pretty handy with a milling machine but I wouldn't know in practice what to do to an engine head to make it flow better...
powerlabs is offline   Reply With Quote
Old 04-26-2004, 02:31 PM   #6
goobie
Scooby Specialist
 
Member#: 8273
Join Date: Jul 2001
Location: White Rock BC, Canada
Vehicle:
2006 WRX Wagon
WRB

Default

Quote:
Originally posted by goobie
I could be wrong but I don't think you'll get Phase II (SOHC) heads to bolt up to a Phase I (DOHC) block. I don't think the bolt pattern is the same among other things... Someone please correct me if I'm wrong.

Chad
I did a little searching... Some people claim it can be done?!?! so I guess the bolt pattern is the same... Learn something new everyday....
goobie is offline   Reply With Quote
Old 04-26-2004, 02:35 PM   #7
leondal
Scooby Newbie
 
Member#: 43114
Join Date: Sep 2003
Location: Pownal, VT
Vehicle:
1998 Legacy GT Turbo
Green

Default

Here's the dilly:

You don't really have to worry about bolt patterns. The main problem with switching heads is in the electronics. The DOHC heads have different electronics in relation to the computer.

I say, save yourself the trouble and just get another DOHC head or set of heads.
leondal is offline   Reply With Quote
Old 04-26-2004, 02:46 PM   #8
Storm
Scooby Guru
 
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

Sensors, manifold, Timing belt and possibly timing belt idlers.

Those are your obstacles.

Jay Storm
There's a fine line between "hobby" and "mental illness".
www.sourcemotorsports.com
Storm is offline   Reply With Quote
Old 04-26-2004, 06:24 PM   #9
snowman4us
Scooby Specialist
 
Member#: 21764
Join Date: Jul 2002
Chapter/Region: RMIC
Location: Salty Lake
Vehicle:
Some GDM V8,
JDM Flat 4 X2

Default

Mike i told you it whould be a pain in the @ss to get sohc on a dohc. and who told you that the ECU's wont work
snowman4us is offline   Reply With Quote
Old 04-26-2004, 06:46 PM   #10
YaZahX
Scooby Specialist
 
Member#: 11932
Join Date: Nov 2001
Chapter/Region: Tri-State
Location: NY
Vehicle:
1998 CW ITR
2006 NBP SI

Default

just get another set of dohc heads... the ecu will throw a CEL due to no more EGR if u were to swap the motor setup... also the senors may not work if u use sohc (when u swap head u swap intake manifold)

what is your goal?
YaZahX is offline   Reply With Quote
Old 04-27-2004, 12:20 PM   #11
phunkeeHomosapien
Scooby Specialist
 
Member#: 56061
Join Date: Feb 2004
Chapter/Region: RMIC
Location: dirty south,UT
Default

t
Quote:
Originally posted by YaZahX


what is your goal?
to get my car to run
i think i am just going to pull off the heads and take them into a machine shop and have them redone unless i can find a place that sells those heads for a decent price.
phunkeeHomosapien is offline   Reply With Quote
Old 04-27-2004, 10:06 PM   #12
YaZahX
Scooby Specialist
 
Member#: 11932
Join Date: Nov 2001
Chapter/Region: Tri-State
Location: NY
Vehicle:
1998 CW ITR
2006 NBP SI

Default

Quote:
Originally posted by phunkeeHomosapien
t

to get my car to run
i think i am just going to pull off the heads and take them into a machine shop and have them redone unless i can find a place that sells those heads for a decent price.
if u want upgraded heads, get old school sti heads that use the linline intake bolt battern, they rev to 9k from factory, and u can still use your egr valve and intake setup
YaZahX is offline   Reply With Quote
Old 04-27-2004, 11:47 PM   #13
Storm
Scooby Guru
 
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

Where would one find those old skool STi heads? Which part numbers do we look for?

I remember seeing some discussion in another thread, but can't find it now....

Jay Storm
There's a fine line between "hobby" and "mental illness"...
Storm is offline   Reply With Quote
Old 04-28-2004, 09:50 AM   #14
YaZahX
Scooby Specialist
 
Member#: 11932
Join Date: Nov 2001
Chapter/Region: Tri-State
Location: NY
Vehicle:
1998 CW ITR
2006 NBP SI

Default

edit:

they rev to 8k (i hit 9 accidentally)

and u would have to find them from someone who imports motors, cars or etc

i think they were used on the version 1-4(maybe 5) cars
YaZahX 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
2000 RS suspension put on a 98 RS RChampion Brakes, Steering & Suspension 1 05-05-2003 01:48 PM
Happy 50k miles on my 98 RS SubeDonC Tri-State Area Forum 12 08-23-2002 11:52 AM
Pls Help me...Check List for brake job on a 98 RS funscooby Brakes, Steering & Suspension 7 11-28-2001 07:20 AM
Shift boot on a 98 RS ?? tsfxRS Interior & Exterior Modification 3 08-10-2001 12:57 AM
Silver RS in Auburn/Silver Legacy GT on I80/98 RS at Dealer Kostamojen General Forum Archive 3 01-13-2001 03:27 AM


All times are GMT -4. The time now is 08:06 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.