paranoid

 

From my past experiences and other friend's experiences... the cars which were truly broken in correclty, especially the turbo ones, have had better performance than the ones that had hard break ins....

 

I seriously doubt Buschur cares about ruining engines, considering he owns a machine shop tailored to work on DSM motors.

 

Nowhere in that post does it ever suggest that you should break your car in as he does.

 

I have owned/tuned many hipo cars and motorcycles. These include 600cc, 750cc and 1000cc sportbikes (including desmodromic Ducatis) and 4G63's, 2JZGTE's and EJ20's, etc.
Almost all of them have a breakin period that is specified by the manufacturer.
Let me ask you guys something: If the car was "good to go" from the manufacturer, why would they impose a breakin specification for no reason? Wouldn't it behoove them to let the guys "tear it up" and go tell their buddies to buy one as well?
When an engine is new, it needs to "bed in". The turbo does as well. By not using full load or high rpm, you give the surfaces more time to wash away everything that is removed to bed it in. If you run it too high, I can see how this would cause reduced ring sealing and reduced turbo sealing. If you have ever tried to sand primer without using water, you can see how the sandpaper "packs up" and doesn't work very well. I can expect the surfaces to be the same way to a small degree at a microscopic level.
I have owned and modded many Subaru's. They are very lax about changing things from one car to the next, so I would have to agree that 2~3 examples is not enough. The same car on the same dyno on the same day can give you over 10 whp difference in some cases so that is tough to do any sort of breakin procedure comparison.
I myself always follow the procedures because I expect the engineers who designed the motor would know more than I on the subject. I doubt they would let anyone alter the breakin recommendations without their knowledge and approval.
Why risk it? There will be plenty of time later to "drive it like you stole it".
If following the breakin procedures is going to cause an ultimate reduction in power output for the same modifcations compared to a car that was not properly broken in, then there is something seriously wrong.
Regarding anyone or anything that tries to making sweeping statements about breakin for all types of motors, I would have to say that is not wise. Drag racing motors are built differently from economy cars which are built differently from turbo cars, motorcycles, etc.

Mark
www.Quantum-Racing.com

 

I know there are and have read different threads concerning breaking in a new car. But I still have some questions...

1) Does the car have to be driven a specific amount of miles for it to be considered broken in?

2) Is mileage the only factor, or does the number of thimes the engines is warmed up and cooled down taken into consideration.

3) how vital is properly breaking in a car?

4) I know this is based on preference, but what limits should not be crossed during the break in period?

Thanks for your patience and understanding guys.

 

Come on guys... can someone please help me out here and answer these questions?

 

do a search

 

*shrug* I drive it like its going to be driven the rest of its life. HARD

 

LOL Yeah, for me, break in is mostly just up to the first oil change, manual says 300-500 km. But honestly, you should search for this answer, man...

I may be a newbie, but I do know the rules.

 

I have searched.... no where does it tell you if it is simply based on mileage, or if the amount of times the cars engine warm up and cools down should be taken into consideration. Some of you simply answering and helping out someone else, would make this forum a lot better.

 

On the evo maybe the first 1000 miles or so would be a safe break in point. As for the NA USDM spec lancer's (OZ, ES, LS) just around 500 should be safe for those cars. It's always good to let the engine warm up some before going out and beating on it. Let the oil circulate for 2 or so minutes. Or atleast that's what I do than you just don't have metal on metal friction where as that would be the case if you crank the car and run it.

Hope that somewhat helps. Somewhat hard to explain what I'm trying to say. Hopefully you somewhat get the point though.

 

Dealer and Manual say 600 Miles.

 

1) Does the car have to be driven a specific amount of miles for it to be considered broken in? 600 miles

2) Is mileage the only factor, or does the number of thimes the engines is warmed up and cooled down taken into consideration.

Let the engine warm up b4 you beat on it. Let it idle for a minute to lubricate the turbo b4 you turn the car off.

3) how vital is properly breaking in a car? Can't really say, b/c there are a lot of theories floating around.

4) I know this is based on preference, but what limits should not be crossed during the break in period? As long as you don't bounce the car of the revlimiter in every gear, or dump the clutch at every stop sign you should be okay.

 

Just hit 500 miles on my evo last nite and took it over 6k and it was amazing

I know the manual says 600 miles for break-in but has anyone taken it passed 6K before the 600 mile break in??