Welcome to the North American Subaru Impreza Owners Club Monday July 14, 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 > Factory 2.5L Turbo 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 10-06-2012, 12:04 AM   #1
Jkmaynard
Scooby Specialist
 
Member#: 155178
Join Date: Jul 2007
Chapter/Region: NWIC
Location: Salem OR
Vehicle:
06 STG 2
WRB

Default so a few questions about building my block

I just got the full results back on my leakdown test and 4th cyl ringland is toast so what i an asking i am looking at doing forged pistons i would like to get to 350 whp..

I am guessing it would be wise to do rods also anything else i should do also while i am in there i teally dont want to do sleeves i was told ther would be no need for them at the goals i want to make bit just wanting some oppions...

also i have worked on lots of motors but never torn into a boxer engine before so i would to do it myself to save some cash to throw towards a bicer turbo...
Shoot anything at my like what pistons rods do you guys like CP i here makes good pistons never looked into there rods
* Registered users of the site do not see these ads.
Jkmaynard is offline   Reply With Quote
Old 10-08-2012, 10:41 AM   #2
EdgeAutosport.com
NASIOC Storefront Vendor
 
Member#: 329319
Join Date: Aug 2012
Location: Denver, CO
Default

CP pistons are great, and if you are looking to save a little money, I suggest going with Eagle rods. For the power levels you are looking at, Eagles will be more than enough rod for you.
EdgeAutosport.com is offline   Reply With Quote
Old 10-08-2012, 12:45 PM   #3
Steve.804
Scooby Specialist
 
Member#: 68647
Join Date: Aug 2004
Chapter/Region: MAIC
Location: Richmond, VA
Vehicle:
07 STI
Rotated 35R Jorge Tuned

Default

If you want to be real smart about it, you need to decide what if any plans you have for the car. What fuel do you have available in your area? How much money do you plan on investing into your car? Do you already have a tuner? If not, now would be a good time to find a reputable shop and get their advice on your plans.

350whp honestly is not a ton of power so you really won't need the most ballar set-up to make it reliable. I think who does the engine build will play the biggest roll in how long it's going to last.

The only advice I can really give you at this point is don't buy too much turbo if all you're looking for is 350whp. Spend some time in the Proven Power section of the forum and check out other peoples set-ups that are in a similar power range as your goal. Blouch Dom 3 XTR comes to mind if you plan on sticking with stock location. Or check out the latest and greatest from Forced Performance.
Steve.804 is offline   Reply With Quote
Old 10-08-2012, 05:16 PM   #4
Jkmaynard
Scooby Specialist
 
Member#: 155178
Join Date: Jul 2007
Chapter/Region: NWIC
Location: Salem OR
Vehicle:
06 STG 2
WRB

Default

92oct i would like to keep the turbo in the stock location if i can i would also like a turbo with more headroom for when i get my 6 speed swap and that wont be till next summer...

I have been told eagle rods suck by people then other people to tell me they are great so go figure lol..
how hard is it to do pistons and rods on our blocks like i said i have torn into many blocks before just never a boxer engine i have a tuner already but he really said it was my choice..

On pistons and rings he said there is a upside and downside to them all problem is they are a great shop for tuning cars but they do not rebuild blocks in their shop so i was going to do it or find another shop that does

I have never had a shop rebuild a motor for me so when you ask my budget i guess what is about the going rait for a shop to do pistons and rods ???
Jkmaynard is offline   Reply With Quote
Old 10-08-2012, 08:27 PM   #5
k04sti
Scooby Specialist
 
Member#: 171773
Join Date: Feb 2008
Chapter/Region: South East
Location: tampa, fl
Vehicle:
04 wrx sti
jbp dom 3 xtr w meth!

Default

cp pistons manley rods valve springs arp head studs. While you rebuilding your engine you might as well do it right. Even if it costs a little more just do everything. Not saying get cams and everything but do pistons rods and all the basics.
k04sti is offline   Reply With Quote
Old 10-08-2012, 10:39 PM   #6
Jkmaynard
Scooby Specialist
 
Member#: 155178
Join Date: Jul 2007
Chapter/Region: NWIC
Location: Salem OR
Vehicle:
06 STG 2
WRB

Default

Yeah i was going to do head studs as they are not to much extra what is a good brand of valve sorings have not looked into those to much
Jkmaynard is offline   Reply With Quote
Old 10-09-2012, 11:28 AM   #7
Steve.804
Scooby Specialist
 
Member#: 68647
Join Date: Aug 2004
Chapter/Region: MAIC
Location: Richmond, VA
Vehicle:
07 STI
Rotated 35R Jorge Tuned

Default

Steve.804 is offline   Reply With Quote
Old 10-09-2012, 11:43 AM   #8
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

wrong forum
Uncle Scotty is offline   Reply With Quote
Old 10-09-2012, 03:47 PM   #9
UK-Wagon
Scooby Specialist
 
Member#: 232430
Join Date: Dec 2009
Chapter/Region: SCIC
Location: On the Left side
Vehicle:
555 XTi
1 AW & 1 CGM

Default

CP pistons are loud as hell and uncoated Ive seen them do some really bad scoring of the cylinder walls in very short time. Either get them with the coating or buy something that comes with a coating. Or send them to Specialized coatings in So cal (is where JE sends their pistons to be coated).
UK-Wagon is offline   Reply With Quote
Old 10-09-2012, 04:34 PM   #10
Jkmaynard
Scooby Specialist
 
Member#: 155178
Join Date: Jul 2007
Chapter/Region: NWIC
Location: Salem OR
Vehicle:
06 STG 2
WRB

Default

What pistons do have coatings never even thought of that
Jkmaynard is offline   Reply With Quote
Old 10-09-2012, 05:04 PM   #11
ssmdc5
Scooby Newbie
 
Member#: 314810
Join Date: Mar 2012
Location: Phoenix, Az
Vehicle:
2009 STI
SWP

Default

eagle rods have worked great for me in my experience, used to be problems with the rod bolts but now they use arp rod bolts and ive taken eagle rods to 600whp for over 50k miles
ssmdc5 is offline   Reply With Quote
Old 10-09-2012, 05:17 PM   #12
Steve.804
Scooby Specialist
 
Member#: 68647
Join Date: Aug 2004
Chapter/Region: MAIC
Location: Richmond, VA
Vehicle:
07 STI
Rotated 35R Jorge Tuned

Default

Any data/tests on how long these coatings actually last? If it buys you another 10k miles on your built block I'd say it certainly would be worth the money. If it is made to stay on for a few races (or say between engine rebuilds for a pro race team) then it may not add a whole lot of life to a built engine that is being driven on the street/highway where miles are racked up pretty quickly.
Steve.804 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


All times are GMT -4. The time now is 08:34 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.