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Old 08-03-2009, 10:58 PM   #1
two_wheel_mayhem
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Engine break in methods

I know some of you will disagree, but this is how I like to break in engines. The pistons using his method, do not lie. He is not selling anything.

I've built about 50 engines using this method of break in.

http://www.mototuneusa.com/break_in_secrets.htm
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Old 08-03-2009, 11:30 PM   #2
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GM has built more than 50. So I would just follow the manual.

If you have money and can build engines they your probably not worried about getting 200,000 + on it. Sure if your building race cars you break em in hard cause your just gonna tear it down sooner in a shop or blow it up.

But production cars that you want 30 years of use before a rebuild then you baby it.
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Old 08-03-2009, 11:37 PM   #3
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I have to say I agree. I built many drag race engines and ran them hard right from the get go. My dad is an old drag racer and said if you build it right you don't have to baby it and we never did.
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Old 08-03-2009, 11:40 PM   #4
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GM has built more than 50. So I would just follow the manual.

If you have money and can build engines they your probably not worried about getting 200,000 + on it. Sure if your building race cars you break em in hard cause your just gonna tear it down sooner in a shop or blow it up.

But production cars that you want 30 years of use before a rebuild then you baby it.
That's a mith about race engines. Alot of them run aleast an entire season if not longer without tearing them down if you build them right. I have an old dart with a 600hp 360 that's ten years old. It's never been touched inside.
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Old 08-03-2009, 11:51 PM   #5
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Old 08-03-2009, 11:53 PM   #6
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GM builds the car I would listen to them. You think they want more warranty work or less? I'm sticking with the owners manual, I want this car to last.
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Old 08-03-2009, 11:54 PM   #7
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GM builds the car I would listen to them. You think they want more warranty work or less? I'm sticking with the owners manual, I want this car to last.
Your right .... Engineers are engineers .... but sometimes they can be idiots ... from what I heard
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The first rule of modding something that's not American is to not try to compete with modded V8 cars that are American. Really, they can run insane power with little investment. It's not even a fair fight.
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Old 08-04-2009, 12:00 AM   #8
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Your right .... Engineers are engineers .... but sometimes they can be idiots ... from what I heard
He didn't really say about using this to break in the motor in the camaro or any new cars for that matter. He merely was talking about breaking in engines ingeneral from what I read.
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Old 08-04-2009, 12:03 AM   #9
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Good look up, but going to stick to the manual, I mean its 30k no joke for me, not taking any chances.
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Old 08-04-2009, 12:05 AM   #10
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It will last through the warranty period either way, the engineers know this.

5 years, or 100,000 mile...notice how you'd have to drive a whole lot to hit the mileage before the time?
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Old 08-04-2009, 12:05 AM   #11
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I'll break in 50/50. Running it good and cruising around stop and go.
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Old 08-04-2009, 12:09 AM   #12
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It will last through the warranty period either way, the engineers know this.

5 years, or 100,000 mile...notice how you'd have to drive a whole lot to hit the mileage before the time?
Another good reason to run it hard from the start if your talking about the camaro is, the ecu will learn your driving habits and be more aggresive.
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Old 08-04-2009, 12:28 AM   #13
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burnout off the dealer lot
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Old 08-04-2009, 02:49 AM   #14
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burnout off the dealer lot
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Old 08-04-2009, 06:16 AM   #15
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Correct me if I'm wrong but i was told that the engines in modern cars already come broken in. It's the transimission brakes and whole bunch of other small things that you are braking in. It is true that computer in your car learns how you drive but a simple battery disconnect should reset it.
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Old 08-04-2009, 06:36 AM   #16
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I agree with this break in proceedure, dropped a 408 in a friends car and when he told me the builder recomended to break it in that he throw it on a dyno and run it like a raped ape I didn't beleive him. Then he showed me the written instructions which came with the motor. He hit 70,000 miles recently while spraying the motor from the begining, not a single problem yet.
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Old 08-04-2009, 08:19 AM   #17
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Back in the LT1 and LT2 days I watched them assemble and do random tests on one right off the line water, wires and some LP gas in place of the air cleaner. I was talking to the guy while he was hookin it up and touched it off, he then twisted the throttle wound it up to bout 6,000 grand (that was the limit of the LP) and turned and talked for about 5 minutes, flipped the switch to shut it down unhooked it and sent it on down the line as a good one. If it was going in a Vette it was externally balanced so it got fire up a few more times to get the balance right, and all the vette motors at that time were externally balanced so they all were ran at the assembly plant.
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