When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
look at the S&S website or just type bike break in or some variation and you will get tons of info. The best advice I have heard regarding engine break in is to make sure that you get the bike to normal operating temperature and then let it naturally cool down to room temp before you get it hot agian. I'm not sure how many times you should do this but it makes sense to me. The greatest expansion and contraction occurs when the engine is still new. This method allows the engine components to expand and contract through the full temp range. Have you ever listened closely to a new bike as it cools. It clicks and pops like a bowl of rice crispies. Now, listen to that same bike after it has been broken in. You will still hear clicks and pops but not with near the intensity or frequency as the new bike. So to answer your question honestly, I have no frickin idea!!! but it sounds good dont it.
There are no dumb questions here.....but maybe some dumb answers! Seriously, go by the book on the break-in. Let the engine get to operating temperature and ride moderately, keeping your revs below 3000 in any gear. Vary your speed for the first 200 miles. Some guys say to ride the bejeezus out of them from the beginning, but I don't think it wise. Better safe than sorry, plus it gives you time to get used to the nuances of the handling, etc. Doesn't matter where you ride it, just take it easy.....get those rings seated well and the tranny gears meshed-in properly.....remember you have new tires and brake pads, too. Those have a little brak-in period too.
Take your time............your engine will thank you many times over.
Take it from me ride the bike like your going to ride it. That break in period is pretty much full of it. Remember you have two year for that engine to break down on you.
I do it by the book.......HD manual. Under 3000 rpm for 1st 50 miles, under 3500 until 500 which I extend to 700. I change all oils to synthetics & filters at 100,500,1000,2000 then done. Many people recommend short trips (15-20 minutes) for the first 100 miles with complete cool down to heat cycle the engine. My $.02 (PS...do not lug the motor at low speed ever stay in the low end of the torque curve)
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.