Welcome to the North American Subaru Impreza Owners Club Thursday October 2, 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 06-23-2004, 01:18 PM   #1
Stubaru
Scooby Specialist
 
Member#: 2073
Join Date: Aug 2000
Chapter/Region: NESIC
Location: Newbury, NH
Vehicle:
07 Volvo S60R
Cthulhu Gray

Default Copper Gaskets

Ok, I understand that copper gaskets leak oil on N/A motors (and most times on all types of motors) because of different expansion coefficients. Apart from the leaking, are they a suitable/reliable replacement for say, the 98 EJ25 DOHC motors that have blown head gasket issues?

Also, how much oil is lost through the leaking on the average set of copper gaskets?


Cheers,

Stu
* Registered users of the site do not see these ads.
Stubaru is offline   Reply With Quote
Old 06-23-2004, 11:12 PM   #2
Tim Sanderson
Scooby Guru
 
Member#: 6486
Join Date: May 2001
Chapter/Region: MWSOC
Location: S.E. wisconsin
Vehicle:
00 Impreza 2.5 RS
Blue Ridge Pearl

Default

Are they available?
Tim Sanderson is offline   Reply With Quote
Old 06-24-2004, 09:17 AM   #3
Legacy777
Scooby Guru
 
Member#: 4800
Join Date: Mar 2001
Chapter/Region: TXIC
Location: Houston, Tx
Vehicle:
1990 Legacy & 97 OBS
AWD 6MT EJ22T AWIC Swap

Default

On a street driven car, I probably wouldn't recommend them. They're meant to hold higher compression better. On a stock motor.....why bother with the headaches of leaking oil and other BS....
Legacy777 is offline   Reply With Quote
Old 06-24-2004, 02:09 PM   #4
Section 8
Scooby Specialist
 
Member#: 821
Join Date: Jan 2000
Chapter/Region: MWSOC
Location: "Like a hyena you are..."
Default

Rarely are copper gaskets available "for sale". You usually have to provide a gasket to someone who will cut you a copper gasket.

See if Cometic has gaskets for the DOHC, I am almost positive that they do.

cheeRS,

Greg
Section 8 is offline   Reply With Quote
Old 06-24-2004, 02:17 PM   #5
HndaTch627
Scooby Guru
 
Member#: 6551
Join Date: May 2001
Chapter/Region: MWSOC
Location: Carol Stream, IL
Vehicle:
'01 GC8 Dinged STM
'09 Concours 14 ABS Black

Default

use the cometic ones or i am sure a 2004 STi one would work.

Jeremy
HndaTch627 is offline   Reply With Quote
Old 06-25-2004, 10:21 AM   #6
Stubaru
Scooby Specialist
 
Member#: 2073
Join Date: Aug 2000
Chapter/Region: NESIC
Location: Newbury, NH
Vehicle:
07 Volvo S60R
Cthulhu Gray

Default

I think that the leaking would still be better than having the head gasket constantly replaced since they charge almost $1500 for the service.


Stu
Stubaru is offline   Reply With Quote
Old 06-25-2004, 11:50 AM   #7
HndaTch627
Scooby Guru
 
Member#: 6551
Join Date: May 2001
Chapter/Region: MWSOC
Location: Carol Stream, IL
Vehicle:
'01 GC8 Dinged STM
'09 Concours 14 ABS Black

Default

Quote:
Originally posted by Stubaru
I think that the leaking would still be better than having the head gasket constantly replaced since they charge almost $1500 for the service.


Stu
no because after time even the copper will start to leak coolant and then you are back to square one
HndaTch627 is offline   Reply With Quote
Old 06-25-2004, 02:36 PM   #8
Stubaru
Scooby Specialist
 
Member#: 2073
Join Date: Aug 2000
Chapter/Region: NESIC
Location: Newbury, NH
Vehicle:
07 Volvo S60R
Cthulhu Gray

Default

oh, see I didn't know they leaked coolant. Is there a happy meduim between copper and what we use now?


Stu
Stubaru is offline   Reply With Quote
Old 06-25-2004, 02:47 PM   #9
HndaTch627
Scooby Guru
 
Member#: 6551
Join Date: May 2001
Chapter/Region: MWSOC
Location: Carol Stream, IL
Vehicle:
'01 GC8 Dinged STM
'09 Concours 14 ABS Black

Default

3 or 4 layer steel
HndaTch627 is offline   Reply With Quote
Old 06-25-2004, 03:19 PM   #10
Storm
Scooby Guru
 
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

Cometic has gaskets for the DOHC. PN's as follows:
C4264HP= .043" MLS 100mm DOHC suitable for boost/nitrous.
H16310275=.027" MLS 100mm DOHC.

I actually have a set of the C4264HP gaskets for sale if anyone is interested, $110 shipped.


Jay Storm
Storm is offline   Reply With Quote
Old 06-26-2004, 05:05 PM   #11
Stubaru
Scooby Specialist
 
Member#: 2073
Join Date: Aug 2000
Chapter/Region: NESIC
Location: Newbury, NH
Vehicle:
07 Volvo S60R
Cthulhu Gray

Default

Can you explain those dimentions, I'm assuming one is thickness?


Stu
Stubaru is offline   Reply With Quote
Old 06-26-2004, 06:53 PM   #12
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Stu - The latest 4-layer DOHC gaskets seem very durable. I blew two sets of the original 3-layer gaskets, once at about 59k, then again at about 75k. That was with an all stock motor. I've now got about 50k (I think - I'd have to go check my service records) on the 4-layer gaskets, which were installed at the same time I did my Cobb heads and cams. I've had zero problems with these gaskets, and the car has certainly seen plenty of abuse.

Pat Olsen
'97 Legacy 2.5GT sedan
Patrick Olsen is offline   Reply With Quote
Old 06-27-2004, 04:26 AM   #13
Kevin Thomas
Street Racing Instructor
Moderator
 
Member#: 110
Join Date: Jul 1999
Location: 1997 OBS, 1996 SVX, 1988 RX
Vehicle:
1989 1989 XT6

Default Gaskets

Paeco Industries sell copper gaskets for our cars. I purchased a set sometime early last year when I was going to have some work performed at ILP Performance. I dropped them off at ILP and I haven't seen them since.


They weren't the best looking headgaskets but they were copper. I just never had a chance to use them.
Kevin Thomas is offline   Reply With Quote
Old 06-28-2004, 08:20 AM   #14
Stubaru
Scooby Specialist
 
Member#: 2073
Join Date: Aug 2000
Chapter/Region: NESIC
Location: Newbury, NH
Vehicle:
07 Volvo S60R
Cthulhu Gray

Default

Patrick,

If you put the cobb heads on, did cobb change anything that would make the gaskets blow less? People have been saying that the heads actually warp due to poor cooling or some other design flaw.

That being said do you know the part number for the 4 layer gasket?

Cheers,

Stu
Stubaru 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
Crucial Racing copper gaskets dbrier Car Part Reviews 6 09-17-2008 10:04 PM
Copper Gasket Maker for the Hard-to-Find Single Port Gaskets. Hites Normally Aspirated Powertrain 7 09-06-2007 02:18 PM
Copper Gaskets vs. OEM Gaskets scoobydrew06 Factory 2.0L Turbo Powertrain 6 01-27-2007 04:59 PM
Crucial copper gasket and gasket spray questions athakur999 Newbies & FAQs 4 12-23-2005 01:04 AM
Copper Gasket Questions Stubaru Normally Aspirated Powertrain 7 01-11-2003 09:09 AM


All times are GMT -4. The time now is 09:47 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.