Everyone has to read this artical about the myths of breaking in a new motor. I have heard about this and it makes total sense.

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

 

Yeah that site has been around for a while, it's definatly interesting.

 

thats how I broke mine in and it is faster than my buds 03 400 .

 

Thats how I broke in my 250 and thats how the Honda dealer told me to break in my Rincon. I have 2 friends that have Sp700's. They both bought from the same dealer on the same day. One of them beats his pretty good and the other dont. The one that is beat is significantly faster.

 

Is this the same for 2-strokes too. I saw on the site it said for motorcycles and all 4 strokes but what about 2-strokes should they be broken in the same as what they say or should you be easy on them.

 

I've always heard "break em in the way your gonna ride em". I do 4-5 heat cycles and then pretty much ride em hard.

 

Warm it up, let it rip..

 

I used to fly cargo in Cessna 206 and 207 single-engine piston planes.

For breaking in new engines (or rebuilt ones) we were told to run them pretty hard within certain guidelines.

The rules were as follows from order of importance.

1) No slow nose-up climbs (ie, keep the airflow into the cowling to keep the engine temps normal).

2) Allow time for cool down in a slow descent from altitude to landing pattern.

3) Vary the RPM and manifold pressure but mostly keep it high RPM with moderate to high manifold pressure

4) Pay particular attention to engine temps during flight and oil condition on pre-flight.

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As for my Ranger 700 XP, I rode it like I stole it. [img]i/expressions/face-icon-small-wink.gif[/img]

Rick

 

I use to work at a Ford dealer, I ran new engines hard everytime to break it in. The owners manual and Fords manual was not the same. I drove a Ranger home that I rebuilt 1 time in 2nd gear and ran it 70 mph for 30 miles 1 time. Last I heard it still ran good and didn't use oil.

 

Very interesting. I fall under the catagorie of i was told to run it easy, but just couldnt resist the temptation to get on the gas. I tried to be easy on it for a little bit but eventually just ran it hard.