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Old 07-09-2009, 12:53 PM   #1
spike589
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Cool So new motor

Well I blew my motor and getting new one put in. My question is their is alot of info floating on how to break in a new motor. I heard to drive it hard and also baby it. I personally never broke in a motor before. S o im looking to see who has done this and what they recommend
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Old 07-09-2009, 12:58 PM   #2
QwikEVO
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baby it for the first 1000 miles. Change your oil.

Then drive it like you're going to, which since you have an STi...will probably be hard.
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Old 07-09-2009, 01:05 PM   #3
yamahaSHO
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Here's how I break my engines in...


http://www.mototuneusa.com/break_in_secrets.htm
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Old 07-09-2009, 01:09 PM   #4
spike589
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drive an STI hard i doubt it. I thought they were soccer mom cars
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Old 07-09-2009, 01:10 PM   #5
spike589
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Quote:
Originally Posted by yamahaSHO View Post
Here's how I break my engines in...


http://www.mototuneusa.com/break_in_secrets.htm
i have his info and it sounds sensible but i needed that feedback. how many you broken in
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Old 07-09-2009, 01:18 PM   #6
yamahaSHO
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I've done this on 5 motors now... Each one putting well over 400hp to the wheels (SHO motors). The motors run great and do not have excessive blow-by. If you want the rings to seat quickly before glazing over, you have to do it quick by putting some pressure behind them.
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Old 07-09-2009, 01:19 PM   #7
QwikEVO
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He has a SHO, I'm sure he's done it once or twice. LOL
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Old 07-09-2009, 01:35 PM   #8
seascooby
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Quote:
Originally Posted by yamahaSHO View Post
I've done this on 5 motors now... Each one putting well over 400hp to the wheels (SHO motors). The motors run great and do not have excessive blow-by. If you want the rings to seat quickly before glazing over, you have to do it quick by putting some pressure behind them.

hopefully not all for the same car.
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Old 07-09-2009, 01:51 PM   #9
yamahaSHO
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No, 4 different cars (a cam sprocket broke on one and melted some pistons on a buddies car - remote turbo'd), one of which is mine.
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Old 07-09-2009, 02:44 PM   #10
tribalwrx
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Omar the best advise i can give you is to listen to how Dale says to break in the motor, he's the one putting it together for you.

Mike
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Old 07-09-2009, 02:50 PM   #11
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I can say babying it and driving like a granny hasn't worked for me. but Dales seated the rings for me and I can tell you he was on the car hard, lots of revs, but not a lot in WOT. I drove out to Seward and cycled through the gears from 3-5 and sometimes 6, just to get the different Revs up without too much boost. I'm hoping this will work better than breaking my car in the first time. And thinking back, on my LGT, I broke that in fairly hard since it was my first turbo'd car and I had no idea I wasn't supposed to be going hard on the boost.. ok, maybe I did, but didn't care. LOL
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Old 07-09-2009, 03:18 PM   #12
Marlons101
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Dale seated my rings and after 500miles...It was on like Donkey Kong!

edit actually it was 743miles till I went full stg2 with other bs from stock
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Old 07-09-2009, 03:24 PM   #13
spike589
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Quote:
Originally Posted by tribalwrx View Post
Omar the best advise i can give you is to listen to how Dale says to break in the motor, he's the one putting it together for you.

Mike
he was at first and now someone else is back their
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Old 07-09-2009, 03:27 PM   #14
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Quote:
Originally Posted by yamahaSHO View Post
No, 4 different cars (a cam sprocket broke on one and melted some pistons on a buddies car - remote turbo'd), one of which is mine.
you want to break in another one
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Old 07-10-2009, 02:26 AM   #15
ScoobyTec
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when i install a new engine or build a forged engine n/a or forced i always seat the rings. 20 pulls to 5000rpm @ 50%throttle go back to the shop and change the oil and filter hot. now the customer needs to drive it 500 miles before any high boost or long pulls or you will have oil consumption problems
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Old 07-10-2009, 03:22 PM   #16
yamahaSHO
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Quote:
Originally Posted by spike589 View Post
you want to break in another one
If you're asking me to break it in... Bring it my way and I think I can manage.

Quote:
Originally Posted by ScoobyTec View Post
when i install a new engine or build a forged engine n/a or forced i always seat the rings. 20 pulls to 5000rpm @ 50%throttle go back to the shop and change the oil and filter hot. now the customer needs to drive it 500 miles before any high boost or long pulls or you will have oil consumption problems
I wouldn't use a 50% throttle as your only means. I watch boost when doing this. I try to give the motor a constan 3-5 PSI when doing this if it is boosted. For an NA motor, you can almost give it WOT to that point and in both cases, be sure to allow the motor to pull some vacuum by engine braking.
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Old 07-10-2009, 03:42 PM   #17
QwikEVO
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Is it because I'm new to the whole Subaru crowd, or do a lot of Subarus need rebuilt motors? Are the Boxer motors that weak when power is put to them???
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Old 07-10-2009, 04:43 PM   #18
Alaskan EJ20
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the internals are not the best in the 2.0L's they can take some power, tuning is what causes most to fail.
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Old 07-10-2009, 04:55 PM   #19
QwikEVO
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Quote:
Originally Posted by Alaskan EJ20 View Post
the internals are not the best in the 2.0L's they can take some power, tuning is what causes most to fail.
Tuning, or lack of?
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Old 07-11-2009, 02:10 PM   #20
spike589
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everyone has diff. scenarios on why they blew up their motor. so its not likes its consistent issue or a trend for whatever reason one thing fails or another. Mine was i left mine outside all last wintewr cause couldnt drive it and only started it myabe once a day for 30 minutes or so cause i could not drive it. come summer i try to move it and their s a nice little tick in my motor.
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Old 07-11-2009, 02:29 PM   #21
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long idles tend to put a little combustion gasses in the oil and i can see how months of sitting would cause earlier fail.
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Old 07-11-2009, 02:45 PM   #22
akeric
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Quote:
Originally Posted by QwikEVO View Post
Is it because I'm new to the whole Subaru crowd, or do a lot of Subarus need rebuilt motors? Are the Boxer motors that weak when power is put to them???

As far as I know the boxer engine is a great platform once you take care of the crappy pistons and factory tune (on the later models).
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Old 07-11-2009, 03:18 PM   #23
WRXtract
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i just got a new one put in my wrx, your going to want to change your oil at 100miles then just to make sure theres no metal shavings and what not, then change it at 300miles then you should be good buy i wouldnt have a led foot until after 1000miles.. good luck
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Old 07-11-2009, 03:39 PM   #24
yamahaSHO
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I would make your first oil change immediately after the initial break-in runs.
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