Welcome to the North American Subaru Impreza Owners Club Friday July 11, 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 03-28-2014, 05:25 AM   #1
2.5bugeye
Scooby Newbie
 
Member#: 370419
Join Date: Oct 2013
Default Engine break in.

What do
You guys recommend for a break in oil and process for breaking in an EJ 25?
* Registered users of the site do not see these ads.
2.5bugeye is offline   Reply With Quote
Old 03-28-2014, 06:31 AM   #2
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

get it warmed up, put load on it. Oil type dino to save some money as you will be changing it very frequently at first. rings need cylinder pressure to seat and seal.
ride5000 is offline   Reply With Quote
Old 03-28-2014, 07:01 AM   #3
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

yeah....regular 10w30.....and after ya start it and everything is all good...take it out and drive it up and down the rev range with no violent throttle imputs...no hammering on it....use lots of engine braking....drive it at least 1/2 hour....enough to get the whole engine hot...with lots of engine braking from reasonable rpm's.....then take home and park it for at least 18 hours and let it cool off 100%---this is kinda important.....repeat...change the oil and drive it reasonably until you are sure it isnt gonna p0p because ya forgot something or something is failing....and change the oil again at 500 or so miles and go from there

i wouldnt use synthetic oil in it until it has at least 3k miles on it....the internal oil lubricated parts need to machine themselves to final hardness and tolerence in situ and syn oils hinder that process

i broke both my wrx's in that way and neither has used any oil...or blew up and i have not been easy on either one
Uncle Scotty is offline   Reply With Quote
Old 03-28-2014, 09:26 AM   #4
Notch 8
Scooby Newbie
 
Member#: 355254
Join Date: May 2013
Chapter/Region: MWSOC
Location: Columbus, Ohio
Default

Quote:
Originally Posted by 2.5bugeye View Post
What do
You guys recommend for a break in oil and process for breaking in an EJ 25?
Are you talking a custom built engine, or a new car?
If the first, follow the builders advice.
If the latter, follow your owners manual.
/thread.
Notch 8 is online now   Reply With Quote
Old 03-28-2014, 09:58 AM   #5
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

follow the owners manual?

ride5000 is offline   Reply With Quote
Old 03-28-2014, 10:04 AM   #6
yamahaSHO
Scooby Specialist
 
Member#: 73932
Join Date: Nov 2004
Chapter/Region: MWSOC
Location: Nebraska
Vehicle:
2005 STi - E85 20G'd
2004 S2000 - E85

Default

I've always done this on the engines I've built.

http://www.mototuneusa.com/break_in_secrets.htm
yamahaSHO is offline   Reply With Quote
Old 03-28-2014, 12:04 PM   #7
2.5bugeye
Scooby Newbie
 
Member#: 370419
Join Date: Oct 2013
Default

Its gonna be a built bottom end of an sti and the 2.0 head slightly ported
2.5bugeye is offline   Reply With Quote
Old 03-28-2014, 02:44 PM   #8
300zxturboftw
Scooby Specialist
 
Member#: 325461
Join Date: Jul 2012
Chapter/Region: MWSOC
Location: Earth
Vehicle:
2003 WRX
WRB Rotated 35r

Default

Break in oil/conventional mineral oil to 1000 miles. Start it up, let it sit at operating temp for about 5 min if that and drain it. Refil. Change at 400-1000-1500, switch to full synthetic around 1000-1500 (you can test compression if you are really anal). Tuned my car with full syth at 1100 miles. Made good power and still going strong.
300zxturboftw is offline   Reply With Quote
Old 03-28-2014, 03:41 PM   #9
Notch 8
Scooby Newbie
 
Member#: 355254
Join Date: May 2013
Chapter/Region: MWSOC
Location: Columbus, Ohio
Default

Quote:
Originally Posted by ride5000 View Post
follow the owners manual?

Because you're smarter than everyone at Subaru...
Notch 8 is online now   Reply With Quote
Old 03-28-2014, 04:25 PM   #10
BeastianSTI
Scooby Specialist
 
Member#: 310506
Join Date: Feb 2012
Chapter/Region: South East
Location: Florida
Vehicle:
2005 WRX STi
Blown Up Color

Default

They probably start the engines in the factory and seal the rings, anyways lol. Then they say to just chill for a while afterwards to be safe?
BeastianSTI is offline   Reply With Quote
Old 03-28-2014, 04:29 PM   #11
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

Quote:
Originally Posted by Notch 8 View Post
Because you're smarter than everyone at Subaru...
keep drinking the cool aid, kid.
ride5000 is offline   Reply With Quote
Old 03-28-2014, 04:33 PM   #12
Notch 8
Scooby Newbie
 
Member#: 355254
Join Date: May 2013
Chapter/Region: MWSOC
Location: Columbus, Ohio
Default

Quote:
Originally Posted by ride5000 View Post
keep drinking the cool aid, kid.
I will, and you can keep bragging on your 12.9 sec 1/4 mile
Notch 8 is online now   Reply With Quote
Old 03-28-2014, 06:59 PM   #13
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

you forgot to add "with stock 440cc injectors/no adi/95* day/first and last time ever drag racing."

if you want to talk technical, let's do it. i'm always willing to school somebody!
ride5000 is offline   Reply With Quote
Old 03-28-2014, 07:59 PM   #14
yamahaSHO
Scooby Specialist
 
Member#: 73932
Join Date: Nov 2004
Chapter/Region: MWSOC
Location: Nebraska
Vehicle:
2005 STi - E85 20G'd
2004 S2000 - E85

Default

What's up?
yamahaSHO is offline   Reply With Quote
Old 03-29-2014, 10:47 PM   #15
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Quote:
Originally Posted by Notch 8 View Post
Are you talking a custom built engine, or a new car?
If the first, follow the builders advice.
If the latter, follow your owners manual.
/thread.
Quote:
Originally Posted by Notch 8 View Post
Because you're smarter than everyone at Subaru...
Quote:
Originally Posted by Notch 8 View Post
I will, and you can keep bragging on your 12.9 sec 1/4 mile

d000000000000d.....you are an idiot

following the owners manual has killed MANY-MANY of these engines

jesus..where DO these idiots come from
Uncle Scotty is offline   Reply With Quote
Old 03-30-2014, 12:32 AM   #16
spoolinsti05
Scooby Specialist
 
Member#: 108051
Join Date: Feb 2006
Chapter/Region: Tri-State
Location: NY
Vehicle:
2005 TickingTimeBomb
Jr tuned TT Sleeved

Default

Lol I'm bored and need something to argue about says everyone in here...
spoolinsti05 is offline   Reply With Quote
Old 03-30-2014, 12:48 AM   #17
BeastianSTI
Scooby Specialist
 
Member#: 310506
Join Date: Feb 2012
Chapter/Region: South East
Location: Florida
Vehicle:
2005 WRX STi
Blown Up Color

Default

I'm planning on performing the relatively hard break in, with lots of engine breaking from 4k down. Not getting wot until the rings seat.

There seems to be scientific evidence logic behind hard break in, whereas just fear tactics on soft break ins haha. Using brad penn Dino oil for the first 2 oil changes. Warm up to operating temp > dump oil and put more Dino in. Makes sense to me
BeastianSTI is offline   Reply With Quote
Old 03-30-2014, 03:07 PM   #18
ripman
Scooby Newbie
 
Member#: 305707
Join Date: Jan 2012
Chapter/Region: International
Location: AUS
Vehicle:
1999 WRX
WRC Blue

Default

What about camshaft break in? How does that fit into all this. You have brand new bores and rings sitting there revving to 3000rpm for 20min with little real engine load on them, no engine braking.
If you read into MOTOMANS method the first 20min is critical for ring seating but the first 20min is also critical for camshaft break in. What do you do?
ripman is offline   Reply With Quote
Old 03-30-2014, 03:12 PM   #19
yamahaSHO
Scooby Specialist
 
Member#: 73932
Join Date: Nov 2004
Chapter/Region: MWSOC
Location: Nebraska
Vehicle:
2005 STi - E85 20G'd
2004 S2000 - E85

Default

Only time I worry about camshaft break-in is if I installed new cams on a used motor. Otherwise, I let them break in with the ring seating.
yamahaSHO is offline   Reply With Quote
Old 03-30-2014, 10:37 PM   #20
invaderzim
Scooby Newbie
 
Member#: 201991
Join Date: Feb 2009
Chapter/Region: MAIC
Location: Glen Mills, PA
Vehicle:
2011 wrx dom3'd
satin white pearl

Default

engine breaking is your friend.
invaderzim is offline   Reply With Quote
Old 03-30-2014, 10:41 PM   #21
yamahaSHO
Scooby Specialist
 
Member#: 73932
Join Date: Nov 2004
Chapter/Region: MWSOC
Location: Nebraska
Vehicle:
2005 STi - E85 20G'd
2004 S2000 - E85

Default

^No, no it is not...
yamahaSHO is offline   Reply With Quote
Old 03-31-2014, 10:14 AM   #22
BeastianSTI
Scooby Specialist
 
Member#: 310506
Join Date: Feb 2012
Chapter/Region: South East
Location: Florida
Vehicle:
2005 WRX STi
Blown Up Color

Default

^ wut? Necessary to fully seat the rings.
BeastianSTI is offline   Reply With Quote
Old 03-31-2014, 10:24 AM   #23
yamahaSHO
Scooby Specialist
 
Member#: 73932
Join Date: Nov 2004
Chapter/Region: MWSOC
Location: Nebraska
Vehicle:
2005 STi - E85 20G'd
2004 S2000 - E85

Default

^Read what you wrote...
yamahaSHO is offline   Reply With Quote
Old 03-31-2014, 10:45 AM   #24
BeastianSTI
Scooby Specialist
 
Member#: 310506
Join Date: Feb 2012
Chapter/Region: South East
Location: Florida
Vehicle:
2005 WRX STi
Blown Up Color

Default

I read it when I wrote it. Is there a problem with it?
BeastianSTI is offline   Reply With Quote
Old 03-31-2014, 11:02 AM   #25
yamahaSHO
Scooby Specialist
 
Member#: 73932
Join Date: Nov 2004
Chapter/Region: MWSOC
Location: Nebraska
Vehicle:
2005 STi - E85 20G'd
2004 S2000 - E85

Default

Quote:
Originally Posted by BeastianSTI View Post
I read it when I wrote it. Is there a problem with it?
Seriously?


Break =/= Brake

VAST difference between the two.
yamahaSHO 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 08:14 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.