FRS Break-in guide

[DetroitJake]

Originally Posted by jm1681

I wish I had the bank roll to support an attitude that blase.

"I can fill ya wit real millionaire $#!t.
Escargot, my car go, one-sixty, swiftly
Wreck it buy a new one.
Your crew run run run, your crew run run"

-Biggie Smalls: Hypnotize

[firestorm]

Page 125 in your owner's Manuel! Do not allow the engine speed to exceed 4000 rpm except in a emergency. Do not drive at one constant engine or vehicle speed for a long time,either fast or slow. Avoid starting suddenly and rapid acceleration,except in an emergency. Avoid Harding braking ,except in an emergency.During the first 1000 miles.

[damian_mb]

Originally Posted by Kwaziekeller

Now my .02 on "engine break in procedures" : When you buy a new car, it's not going to have 0mi on it, even if you're picking it up @ the end of the assembly line. The lowest I've seen (when I took delivery as it came off of the trailer @ the dealership) was 9mi. .

When I took delivery of my 07 Civic Si it had 4 miles on it and I put about an extra 10 miles on it for the test drive before I signed papers. Not to mention, when you test drive a car, has a sales person ever said do not go over 3K RPMS due to break in period? More than likely no, I mean if that was the case warranty would have already been voided when it was test driven.....once you took delivery and something went wrong.

Anyway I have 50K miles on my Si, and so far so good and I did not follow the break in procedure....Which was I think 500 miles, compared to the BRZ 1K miles. I let it open at 250 miles, I mean who can resist that 8K rpm? No oil burning here (knock on wood) compared to others who followed the break in procedure.

So when I take delivery of my BRZ I'll do the same. I'll break in the car itself up to 250 miles and dirve it "normally" after that. Breaking in the car means the tranny, clutch etc...Like everyone has said, the motor its self has already been tested and "beat" on before you even see it.

[jdzumwalt]

I build complete race motors for my off road truck. My break in procedure is take it out and run it up to 3000 rpm. Let it cool take it up to 4000 rpm each time allowing decompression to expand the piston rings.Finally taking the motor up to 5500 RPM. This is a motor with a max RPM of 6000.

The Idea here is to get he best possible seat with the piston rings. After this I consider that the motor is well broken in and I drive it normally.The last 10% will happen over time.

Now IF Subaru test each motor from the factory Which they most likely do The rings are already seated 90% there. So the 1000 mile break in period is really for most of the other components.

The real key here is smooth driving. This will lead to the best results. Jerky shifting over heating the trans/rearend and the motor these things are all bad. At 300 Miles I consider my car almost broken in. I have ran mine up to 6000 Rpm multiple times. I have not taken her to 8000 yet But I will once I feel that the motor is get a little looser. For me I can almost tell just by the feel and balance of the motor if it's ready to be stretched that far.

Keep in mind every car is a little different. The factory advice is the safest route to yield positive results unless you are very comfortable with new car breakin.

[reeves]

Originally Posted by DetroitJake

• Do not drive at one constant engine or vehicle speed for a long time, either fast or slow.

What's considered a "long time"? 15 minutes? An hour?

[Jono]

This has been an interesting read with some very good comments. IMO it boils down to the owner what decision they make with regard to breaking in, after all they paid for it! I agree that breaking in is not at all just about the engine but think that some people are taking this far too seriously with regard to constant speed and revs etc. Some even state they cannot use the cruise control while breaking in, why not? No road is perfectly flat so even with cruise control on the system will be making adjustments to maintain speed which hence changes load on engine. I myself have my own way of doing things and it works for me, so whatever you feel is best for your car you should do as that is what will make you feel most comfortable in the end!

[corvino26]

Originally Posted by Genomaxter

Just look up Motoman's break-in guide. Some people say follow manufacturer's guide, but I wont because its written by lawyers, not engineers. I work for an engineering firm and we re-write things all the time because it keeps us from being liable, not because its better. That what happens when the world is sue happy.

I cant find the Motoman's break-in guide for the life of me... does anyone have a link?

[lantsalot]

Originally Posted by njccmd2002

for all you care, the salesman that got the car in and out the truck could have taken your car for a joy ride, or the previous dude that test drove it.

This is what concerns me. Heard too many stories of people transporting new cars and beating the hell out of them. Not to mention everyone who test drove the car before you (if you didn't have a deposit on it).

[umpadupa]

Originally Posted by corvino26

I cant find the Motoman's break-in guide for the life of me... does anyone have a link?

http://www.mototuneusa.com/break_in_secrets.htm

just got delivery today..... i passed 4k rpm out the lot.. woops

[Wattage]

It sucks during the break in period because 3000 - 4000 rpm is by far the most boring range for this car. Even a little bit over 4000 rpm is much more satisfying

[Jared0934]

Originally Posted by umpadupa

http://www.mototuneusa.com/break_in_secrets.htm

just got delivery today..... i passed 4k rpm out the lot.. woops

This has been discussed time and time again. This is not the recommended way to break a new engine in from a CAR. This guy is dealing with race designed crate motors with 0 miles no factory break in.

So let's listen to a guy who races motorcycles, or let's listen to the engineers who actually built your motor....

[Jared0934]

Originally Posted by reeves

What's considered a "long time"? 15 minutes? An hour?

That just means don't use your Cruise Control. The engine needs to constantly be at different RPM's and under different loads for a optimal break in.

[McDeLtA_T]

Originally Posted by ngabdala

I am going with what the manual suggests. I would trust the engineers that make the engine to give me the best advice on how to break it in.

Be careful if you go on a test drive not to beat on your soon to be car.

If you decide the car isn't for you then drive it back to the dealership like it deserves to die.

Totally agree with you. Go with what the manual say's. I am an engineer and we may be conservative at times but it's always best just to follow the engineering, i.e the manual.

[McDeLtA_T]

Originally Posted by Jared0934

This has been discussed time and time again. This is not the recommended way to break a new engine in from a CAR. This guy is dealing with race designed crate motors with 0 miles no factory break in.

So let's listen to a guy who races motorcycles, or let's listen to the engineers who actually built your motor....

Agreed, just look at his photo...