www.mototuneusa.com Break-in Method
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Road Master
Joined: Feb 2008
Posts: 927
Likes: 17
From: Spotsylvania, VA
www.mototuneusa.com Break-in Method
I have a 09 Ultra arriving on Friday and was thinking about giving http://www.mototuneusa.com/break_in_secrets.htm break-in method a try. I have read the website, but was looking for some specifics from the experts.
I have read the following from some threads, can you please tell me if my understanding is correct:
1) Start bike and let if run for 8 - 10 sec, turn off and let cool
2) Repeat step 1 two more times
3) In third gear go from 30mph to 60mph then back down to 30.
4) Repeat step 3 nine more times
Is the 30 to 60 a easy or quick roll of the throttle?
When going from 60 to 30 do you let off the throttle easy or quickly?
I have read the following from some threads, can you please tell me if my understanding is correct:
1) Start bike and let if run for 8 - 10 sec, turn off and let cool
2) Repeat step 1 two more times
3) In third gear go from 30mph to 60mph then back down to 30.
4) Repeat step 3 nine more times
Is the 30 to 60 a easy or quick roll of the throttle?
When going from 60 to 30 do you let off the throttle easy or quickly?
Outstanding HDF Member
Joined: Mar 2007
Posts: 3,184
Likes: 5
From: Oregon
hardest thing on an engine is starting it up...
I wouldn't follow that list..up to you tho, its your bike
I just ride a new bike without blipping or haulen *** for the first 50-75miles and then I ride like I would any other day of the week....never had a problem.
Biggest thing you have to worry about on a new bike..is NEW tires..NEW brake pads, New Rotors...
I wouldn't follow that list..up to you tho, its your bike
I just ride a new bike without blipping or haulen *** for the first 50-75miles and then I ride like I would any other day of the week....never had a problem.
Biggest thing you have to worry about on a new bike..is NEW tires..NEW brake pads, New Rotors...
Cruiser
Joined: Apr 2008
Posts: 130
Likes: 1
From: West Virginia
I did it
Hard pull into 60ish and then all the way off the throttle to slow down. You will get as many opinions on this as what kind of oil to use. My bike has 20 some thousand miles and it uses no oil and it has never spit oil out of the air cleaner.
Some will say that if the rings don't seat it will build pressure in the crank case and helps in pushing oil out of the air cleaner. I'm no mechanic, its just what I have read.
Some will say that if the rings don't seat it will build pressure in the crank case and helps in pushing oil out of the air cleaner. I'm no mechanic, its just what I have read.
Outstanding HDF Member
Joined: May 2008
Posts: 2,009
Likes: 0
From: South Jersey
The bullshit you are describing is for ring seating on a fresh top end. And seem to be more like the procedure for a 2 stroke. The motor has been run a bunch of times before you are even going to get it. Just take it easy and very speed. I usually change the oil @ 100 miles. Everything is new! Be smart, do it right!! If all else fails, read the owners manual!
Ultimate HDF Member
Joined: Mar 2008
Posts: 5,788
Likes: 203
From: SW Florida
Basically these four (engine builders and piston ring manufactures) recommend the same brake-in procedure. Ride it hard, don't beat on it, and don't baby it.
1. Head Quarters - New Engine Break In and AFR
2. How To Break In Your Engine For More Power & Less Wear! Also linked from the Baisley Hi-Performance
3. Axtel - Ring Seal - PDF -
4. Hastings (Piston Ring) Manufacturing Company - Break-In Procedure
Here is a pic of one of the pistons removed from my engine that has 8500 miles on it. I broke it in a little harder than the HD manual suggests. Note, the top ring never fully sealed. The engine builder told me this piston looks better then most he sees. The pistons were removed to install a 103 big bore kit.
Here is a pic of a piston where engine was broken in on the dyno at WOT and there are 3300 miles on it.
Here is a pic of a piston where the engine was babied at brake-in. There are 4200 miles on the piston and you can see it is discolored on the skirt. This is a piston that let the gasses past all the rings and it burned the bottom of the piston. Combustion heat should never be there.
This piston has 2000 miles on it. Rings never sealed.
My new build will be broken using the procedures above.
WOT pulls right from the get go.
1. Head Quarters - New Engine Break In and AFR
2. How To Break In Your Engine For More Power & Less Wear! Also linked from the Baisley Hi-Performance
3. Axtel - Ring Seal - PDF -
4. Hastings (Piston Ring) Manufacturing Company - Break-In Procedure
Here is a pic of one of the pistons removed from my engine that has 8500 miles on it. I broke it in a little harder than the HD manual suggests. Note, the top ring never fully sealed. The engine builder told me this piston looks better then most he sees. The pistons were removed to install a 103 big bore kit.
Here is a pic of a piston where engine was broken in on the dyno at WOT and there are 3300 miles on it.
Here is a pic of a piston where the engine was babied at brake-in. There are 4200 miles on the piston and you can see it is discolored on the skirt. This is a piston that let the gasses past all the rings and it burned the bottom of the piston. Combustion heat should never be there.
This piston has 2000 miles on it. Rings never sealed.
My new build will be broken using the procedures above.
WOT pulls right from the get go.
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