Ok, Im at a Dealership....
I watch the dyno guy for a min, Later I approch the Service writer guy.
And I ask him if the Dyno guy knows how to do a Dyno breakin....
His reply, Drum roll please....He said we perfer ya do atleast 500 miles first.
I just look at him and smile and leave....Now just what part of Dyno breakin, did he not uderstand..

 

What's your point?

 

Maybe he thought you said Dyna?

 

His answer is that they don't recommend a dyno beakin. I agree with him.

While there may be something to the WFO breakin (or whatever you want to call it) everything I've ever read says that it should be done immediately.
The engines are run at the factory and most bikes are ridden as part of the set-up. By the time the owner gets on a new bike break in is pretty much done.

 

Dyno break ins are pretty common these days after an engine build. I had my 107 build broke in on the dyno. It's better for the engine because the tuner can monitor the engine and put it though a calculated heat cycle and eliminate a lot of variables you would encounter by doing it on the road.

 

 

so why didn't you ask the guy doing the dyno instead of the guy that fills out the paperwork for doing a dyno?

 

I was told 500 miles on my Blackline. So you're not the only one.

 

Been building harley motors 30 plus years , You do not take a fresh motor slap it on a dyno and run the blue fuc outa it and expect it to be broken in properly nor have near the longevity it should . Depending on the builder and the motor specs the first 50 to 100 miles should be around town stop lighting without sustained hi speed highway riding . If it's a tight or or high performance engine you should treat it like a baby for at least 500 , hell S&S recommends 2500 for a full break in .

Doing it the right way is why I can get 100,000 plus out of a shovel motor and damn near double that on evo's .

 

Interestingly, I was at the York plant last year and watched them put each bike on the dyno and run them pretty hard for 8-10 minutes. Full throttle acceleration up to 90mph, full throttle roll on from 50 to 90, downshifting through the gears then full throttle back up to 90 mph. They were pretty hard on them and it surprised me. These were bikes fresh off the assembly line, no warm up, just mount it and flog it.

Then, there's a separate department that randomly picks a bike and moves it to another test room. It gets a more thorough inspection and then a 15 miles ride on city streets/roads. We were told that the route includes all types of roads. (pot holes, wavy surface, asphalt, concrete, etc)

They actually told us that if we buy a new bike and it has less than 5 miles on it that it should be warning flag that either the bike wasn't put through the initial dyno test or that the speedo was changed. A new bike could have as much as 15-20 miles on it if it was randomly chosen for the second test.