Welcome to the North American Subaru Impreza Owners Club Tuesday April 21, 2015
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 09-30-2010, 01:44 PM   #1
AliBenn
NASIOC Supporter
 
Member#: 487
Join Date: Nov 1999
Chapter/Region: TXIC
Location: Greatwood/Sgrlnd
Vehicle:
1998 /2005 STunIcorn
Acadia Green RS-T

Default normal wear OR abnormal wear? pix

http://forums.nasioc.com/forums/show....php?t=2063079


seems that its close to 50/50 chance of normal/abnormal wear per responses so far.
what do you built guys think?

the vertical striations on the 'bottom' of the cylinder sleeves is what is in question.
thanks
* Registered users of the site do not see these ads.
AliBenn is offline   Reply With Quote
Old 09-30-2010, 02:48 PM   #2
jaxscuby
Sammo Hung
Moderator
 
Member#: 10613
Join Date: Sep 2001
Chapter/Region: South East
Location: S Ga / N Fla
Vehicle:
2002 USDM WRX
WRB

Default

wear pattern looks odd.
did you pull the pistons yet?
jaxscuby is offline   Reply With Quote
Old 09-30-2010, 03:20 PM   #3
soobaviator
NASIOC Supporter
 
Member#: 115070
Join Date: May 2006
Chapter/Region: MAIC
Location: Northern VA
Vehicle:
2009 DGM LGT Spec.B
08 Audi Q7 4.2 PRM

Default

Nope, it's not normal wear. How are the exhaust valves? How's the compression on it?
soobaviator is offline   Reply With Quote
Old 09-30-2010, 09:43 PM   #4
theonlygreat
Scooby Newbie
 
Member#: 65916
Join Date: Jul 2004
Location: Seattle, WA
Vehicle:
1996 Impreza WRX

Default

Are those forged pistons? Did the block get honed for proper clearances?
theonlygreat is offline   Reply With Quote
Old 10-01-2010, 11:01 AM   #5
AliBenn
NASIOC Supporter
 
Member#: 487
Join Date: Nov 1999
Chapter/Region: TXIC
Location: Greatwood/Sgrlnd
Vehicle:
1998 /2005 STunIcorn
Acadia Green RS-T

Default

another member posted this in 2.5L Powertrain Forum

CN's:
i believe he just replcd HG's on a stock motor......the pistons are OE as far as i know
(he stated that his heads were lifting during heavy boost??????)
no warp to deck or heads
engine wasnt smoking, but he doesnt specify if was overheating

i am interested in the wear pattern if it is normal or not
so far: half the amt of members say normal
half the amt of members say its f******up

??????

information is purely for myself if i ever encounter this sort of scoring in any engine cyl sleeve
thanks again
steven
AliBenn is offline   Reply With Quote
Old 10-01-2010, 12:13 PM   #6
Prevent
*** Banned ***
 
Member#: 149114
Join Date: May 2007
Location: I'm too mainstream
Default

of the several stock motors i've torn apart, none had scoring like that....
Prevent is offline   Reply With Quote
Old 10-01-2010, 01:01 PM   #7
AliBenn
NASIOC Supporter
 
Member#: 487
Join Date: Nov 1999
Chapter/Region: TXIC
Location: Greatwood/Sgrlnd
Vehicle:
1998 /2005 STunIcorn
Acadia Green RS-T

Default

^^^the vertical scores correct?

even i have seen the criss cross ones b4.
AliBenn 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
Issue or normal? Center or rear diff? talvai Transmission (AT/MT) & Driveline 5 11-18-2009 06:56 AM
baby, srsy...WTF are you wearing? or melonpants or bloody leopard SQ3.0dotJP Off-Topic 18 09-27-2008 01:08 PM
Cam wear or worse? cueball89 Normally Aspirated Powertrain 15 05-28-2007 08:58 PM
Tire wear, or do I just suck? ratt_finkel Motorsports 13 07-27-2005 06:18 PM
Re-92 Abnormal wear ?? Deznuts05 Brakes, Steering & Suspension 6 02-19-2001 12:27 AM


All times are GMT -4. The time now is 12:05 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.