That is a stupid analogy. A heart is suposed to pump blood, but when you receive a new heart you aren't supposed to run a marathon.
err. sorry didn't mean to cause an argument.
i'll read the manual when i get it.
and i knwo that cars are supposed to be driven... just wondering if they had a break-in period.
guess it's partly true.
so looks like i should:
1. vary my speed (don't stay at one speed for long periods of time)
2. vary my rpm (guess this'll happen when i slow down and speed up).
i'll read the manual when i get it.
and i knwo that cars are supposed to be driven... just wondering if they had a break-in period.
guess it's partly true.
so looks like i should:
1. vary my speed (don't stay at one speed for long periods of time)
2. vary my rpm (guess this'll happen when i slow down and speed up).
Varying a speed is just a byproduct of varying your RPMs. The speed actually has nothing to do with it. Just the RPMs.
Breakin has to do with your new pistons in the engine and seating them on the cylinder wall. Found some articles on google:
http://www.stealth316.com/2-breakin.htm
http://www.lycoming.textron.com/main.js...yReprints/operation/engineBreakIn.html
Many more. This may not be THE proof you were looking for, but I will listen to the car manufacturer, articles, and many dealers before I listen to some idiot from ATOT saying "OMGWTF! DON'T DO IT!"
well...for what its worth....i know a guy who had two identical sportbikes (zx6r?). He broke one in going easy...and one running the piss out of it from the start.
The one that got ran hard from the start dynos with about 5 more HP...but burns some oil.
Now, these engines are totally different things....but in my opinion, just drive normally...it will be fine.
The one that got ran hard from the start dynos with about 5 more HP...but burns some oil.
Now, these engines are totally different things....but in my opinion, just drive normally...it will be fine.
http://www.mototuneusa.com/break_in_secrets.htm
Have at it! Just make sure the engine is warmed up before revving up high.
Have at it! Just make sure the engine is warmed up before revving up high.
Uh no. Don't believe that. To break it in you have to drive it HARD. Older cars from the 60's to the 80's the engines weren't perfect and had very low tolerences. Mash on the gas and seat the seals good. F1 racing does this (after they warm up of course).
The most important thing you can do for your new car is to never start and go as most people do.
Let the oil cycle and the engine to warm up.
The car should have technically been broken in at the dealership when the PDI was done. Aside from that, I suggest getting the oil and filter changed, then you're good to go.
JulesMaximus
No Lifer
- Jul 3, 2003
- 74,544
- 924
- 126
And don't go WOT during the first few hundred miles. Best bet is to read the owners manual though and follow the instructions in there. Most manufacturers tell you to take it easy on the drivetrain and brakes for the first few hundred miles and to vary engine speed. In general, you couldn't go wrong by following that advice.
Edit-What kind of car is this? Year/Make/Model?
JulesMaximus
No Lifer
- Jul 3, 2003
- 74,544
- 924
- 126
Rubbish. Cars are broken in by driving them. Would you buy a new car with a few hundred miles on it?
There are assembly lubes in the engine and some parts need to seat and those lubes need to burn off before you should really start exploring the limits of the car. Brakes especially should not be applied with full force for the first 200 miles. After each brake job they tell you this also.
You cannot compare a mass produced road car to a largely handbuilt Formula One racing car either. Apples to oranges.
JulesMaximus
No Lifer
- Jul 3, 2003
- 74,544
- 924
- 126
JulesMaximus
No Lifer
- Jul 3, 2003
- 74,544
- 924
- 126
Again, different manufacturers have different recommendations but most cars are not broken in when they are new. Read your owners manual.
well which is it, they weren't perfect or they had low tolerances?Mentioned above..
What's The Best Way To Break-In A New Engine ??
The Short Answer: Run it Hard !
Why ??
Nowadays, the piston ring seal is really what the break in process is all about. Contrary to popular belief, piston rings don't seal the combustion pressure by spring tension. Ring tension is necessary only to "scrape" the oil to prevent it from entering the combustion chamber.
If you think about it, the ring exerts maybe 5-10 lbs of spring tension against the cylinder wall ...
How can such a small amount of spring tension seal against thousands of
PSI (Pounds Per Square Inch) of combustion pressure ??
Of course it can't.
How Do Rings Seal Against Tremendous Combustion Pressure ??
From the actual gas pressure itself !! It passes over the top of the ring, and gets behind it to force it outward against the cylinder wall. The problem is that new rings are far from perfect and they must be worn in quite a bit in order to completely seal all the way around the bore. If the gas pressure is strong enough during the engine's first miles of operation (open that throttle !!!), then the entire ring will wear into
the cylinder surface, to seal the combustion pressure as well as possible.
The Problem With "Easy Break In" ...
The honed crosshatch pattern in the cylinder bore acts like a file to allow the rings to wear. The rings quickly wear down the "peaks" of this roughness, regardless of how hard the engine is run.
There's a very small window of opportunity to get the rings to seal really well ... the first 20 miles !!
If the rings aren't forced against the walls soon enough, they'll use up the roughness before they fully seat. Once that happens there is no solution but to re hone the cylinders, install new rings and start over again.
Fortunately, most new sportbike owners can't resist the urge to "open it up" once or twice,
which is why more engines don't have this problem !!
An additional factor that you may not have realized, is that the person at the dealership who set up your bike probably blasted your brand new bike pretty hard on the "test run". So, without realizing it, that adrenaline crazed set - up mechanic actually did you a huge favor !!
What's The Best Way To Break-In A New Engine ??
The Short Answer: Run it Hard !
Why ??
Nowadays, the piston ring seal is really what the break in process is all about. Contrary to popular belief, piston rings don't seal the combustion pressure by spring tension. Ring tension is necessary only to "scrape" the oil to prevent it from entering the combustion chamber.
If you think about it, the ring exerts maybe 5-10 lbs of spring tension against the cylinder wall ...
How can such a small amount of spring tension seal against thousands of
PSI (Pounds Per Square Inch) of combustion pressure ??
Of course it can't.
How Do Rings Seal Against Tremendous Combustion Pressure ??
From the actual gas pressure itself !! It passes over the top of the ring, and gets behind it to force it outward against the cylinder wall. The problem is that new rings are far from perfect and they must be worn in quite a bit in order to completely seal all the way around the bore. If the gas pressure is strong enough during the engine's first miles of operation (open that throttle !!!), then the entire ring will wear into
the cylinder surface, to seal the combustion pressure as well as possible.
The Problem With "Easy Break In" ...
The honed crosshatch pattern in the cylinder bore acts like a file to allow the rings to wear. The rings quickly wear down the "peaks" of this roughness, regardless of how hard the engine is run.
There's a very small window of opportunity to get the rings to seal really well ... the first 20 miles !!
If the rings aren't forced against the walls soon enough, they'll use up the roughness before they fully seat. Once that happens there is no solution but to re hone the cylinders, install new rings and start over again.
Fortunately, most new sportbike owners can't resist the urge to "open it up" once or twice,
which is why more engines don't have this problem !!
An additional factor that you may not have realized, is that the person at the dealership who set up your bike probably blasted your brand new bike pretty hard on the "test run". So, without realizing it, that adrenaline crazed set - up mechanic actually did you a huge favor !!
errr...
so confusing...
those links were interesting
however, most cars you'll drive off the lot will have more than 20 miles on them.. won't they since others test drive them?
so confusing...
those links were interesting
however, most cars you'll drive off the lot will have more than 20 miles on them.. won't they since others test drive them?
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