Reconranger the wife and I are looking to buy her an atv and I remembered that you had a link to a site that told people how to break in all kinds of engines from trucks to atvs i was wondering if you still had the link to that site. Thanks for your time.

 

Here is the link: http://www.mototuneusa.com/break_in_secrets.htm

 

That's the one. I have used it on all my recent machines, with no regrets!

 

thank you, i really appriciate it

 

I totally agree with his approach. Engines need some good application of throttle the first time they are run. Just don't overheat it, don't lug it too bad, and don't be bouncing off the rev limiter.

Repli-racer bikes would often foul spark plugs if people are allowed to fire them up at the dealership to listen to them. Quads can do the same thing, if it's fired up to idle onto the customer's trailer at the dealership, started again to pull into the customer's garage, started again to pull onto the trailer for the trip to the trail...

Cummins also states their engines should be run loaded from the beginning.

I remember an engineering show that talked about how break-in methods changed. During WWII big radial aircraft engines were run on a stand a bunch of hours to break them in. Thousands of engines, of thousands of cubic inches, run for a bunch of hours = a bunch of fuel.

Then folks discovered that if they machined and/or burnished internal surfaces to a smoother finish, the engine could be run on the stand very briefly using full throttle soon and it would promptly develop full power (actually more power), and would burn less oil. Doing this saved both time and thousands of gallons of fuel.