Welcome to the North American Subaru Impreza Owners Club Tuesday October 21, 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 > Built Motor Discussion

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 03-24-2009, 06:37 PM   #1
r0n
Scooby Specialist
 
Member#: 91839
Join Date: Jul 2005
Chapter/Region: MAIC
Location: 08 mica blue wrx
Default HG question

got a quick question guys.. mods list below

04 wrx
2.5 block
cp 100 MM pistons
V7 heads
fpred
etc etc


Should I use a 100 Mm cosmetic HG?
* Registered users of the site do not see these ads.
r0n is offline   Reply With Quote
Old 03-24-2009, 07:31 PM   #2
AKSubieDubie
Scooby Specialist
 
Member#: 190003
Join Date: Sep 2008
Chapter/Region: AKIC
Location: Fairbanks Alaska
Vehicle:
2007 STI EFR 8374
Black

Default

I used OEM head gaskets for my 100mm bore.
AKSubieDubie is offline   Reply With Quote
Old 03-24-2009, 08:19 PM   #3
alcoolaid
Scooby Guru
 
Member#: 134949
Join Date: Dec 2006
Chapter/Region: VIC
Location: Vancouver, BC
Vehicle:
'07 SWP STi
Instagram | arthurlam89

Default

I'm using OEM as well with 99.75mm pistons.
alcoolaid is offline   Reply With Quote
Old 03-25-2009, 01:15 AM   #4
Maxwell Power
Former Vendor
 
Member#: 190729
Join Date: Oct 2008
Chapter/Region: NWIC
Location: Marysville, WA
Default

I'd use the 040 cometics to lower your compression.
I hate using headgaskets to lower compression, but you have an fpred on there and that's going to put you closer to your limits. Get that compression down by having someone modify and cc the chambers or use the 040 cometics.
Maxwell Power is offline   Reply With Quote
Old 03-25-2009, 01:15 AM   #5
Maxwell Power
Former Vendor
 
Member#: 190729
Join Date: Oct 2008
Chapter/Region: NWIC
Location: Marysville, WA
Default

I'd use the 040 cometics to lower your compression.
I hate using headgaskets to lower compression, but you have an fpred on there and that's going to put you closer to your limits. Get that compression down by having someone modify and cc the chambers or use the 040 cometics.
Maxwell Power is offline   Reply With Quote
Old 03-25-2009, 09:34 PM   #6
r0n
Scooby Specialist
 
Member#: 91839
Join Date: Jul 2005
Chapter/Region: MAIC
Location: 08 mica blue wrx
Default

ok thanks guys
r0n 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
Hg question... AK_HMK Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 4 11-27-2009 09:09 PM
Some blown HG questions CKxx Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 4 04-01-2009 07:09 PM
EJ25 HG Questions... Experts needed! fastenova Normally Aspirated Powertrain 16 09-02-2006 05:00 PM
HG Question Zynski10 Forester Forum 0 03-17-2005 10:59 PM
Tein HG questions William LaPalme Brakes, Steering & Suspension 0 06-22-2002 08:12 PM


All times are GMT -4. The time now is 03:17 PM.


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.