There is some heated debate on break in, just wanted to let you know how I did mine. After doing all the internet research(I know...) and talking to people I trust( I know...) this is how I decided to break in my Pro. I am more concerned with rings seating properly than anything else. I followed Motoman's instructions perfectly. Warm up the sled to operating temp of 125 F. Then make 4 pulls up to half throttle and let off the throttle, let the engine brake the sled down to a stop, 4 pulls to 3/4 throttle same way, 4 pulls to full throttle same way. I held the throttle steady for about 2 seconds at the top of each pull. According to him letting the engine slow down with the throttles closed is important because it builds a strong vacuum in the engine and sucks the small metal particles worn off the rings off the cylinder walls and blows them out the exhaust. The hard pulls on the throttle are there to put pressure on the rings to get them to seat. According to him there is a light cross hatch on the cylinder walls that lasts only a short time and is needed to wear the rings and get them to seat. For the rest of the day I rode it on and off throttle all the way to full but didn't really hammer it for long periods of time. Engine pulls really hard now, still in break in. Worse case scenario it seems that I DIDN'T hurt the motor in any way. Have never broken in a two stroke like this before. Used this method on 3 more sleds that weekend and they all seem to pull strong and have no damage too. Take it for what it's worth.
How I broke in my 2012 Pro
- Thread starter Matte Murder
- Start date
break in
My break in program, let sled warm up to 110 degrees, ride up trail approximately 8 miles burping throttle the whole way, get on mountain ride it like i stole it. Sled pulls strong 8250 rpm on long pulls, I am also running non ethanol gas.
My break in program, let sled warm up to 110 degrees, ride up trail approximately 8 miles burping throttle the whole way, get on mountain ride it like i stole it. Sled pulls strong 8250 rpm on long pulls, I am also running non ethanol gas.
I like Motoman, I used his website for years now
I have broke in all my dirt bikes and sleds using his methods and they have never had any trouble and run strong all the time!! Here is the link if ya want to take a look at what he says about engines.
http://www.mototuneusa.com/break_in_secrets.htm
I have broke in all my dirt bikes and sleds using his methods and they have never had any trouble and run strong all the time!! Here is the link if ya want to take a look at what he says about engines.http://www.mototuneusa.com/break_in_secrets.htm
J
joshua335
Well-known member
That's pretty much what I did. Prior to heading out though I had a few heat soaks to my sled in the garage.
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purepolaris600
Well-known member
break in
my break in is usually get on it and hammer it break it in like you will be riding it it makes the ring seat right away getting the pipe nice and hot never have had a moter go down this way and years latter still great compression and runner
my break in is usually get on it and hammer it break it in like you will be riding it it makes the ring seat right away getting the pipe nice and hot never have had a moter go down this way and years latter still great compression and runner
break in
rode mine relatively easy for first 50plus miles,burned about 9 gallos of fuel.Then put 6gallons of clear gas in and went to retrieve sled in creek.Towed waterlogged sled ten miles back to cabin . No problem.She must be broke in now.
rode mine relatively easy for first 50plus miles,burned about 9 gallos of fuel.Then put 6gallons of clear gas in and went to retrieve sled in creek.Towed waterlogged sled ten miles back to cabin . No problem.She must be broke in now.
Joshua I didn't heat soak my sled because I am more worried about ring seal. Wanted the cylinders as rough as possible, and rough is relative. Not saying it's the only way or it's right or wrong just the way I did it. Have fun!
i still gotta break mine in so what would be the best way....Gotta off load at the staging area the a trail ride 13-17km to the riding area.What would be the recommended way?
what i was gonna do is add some extra oil to the tank and just ride it at all speeds just not holding to the pin for a long period maybe 3-5sec.
what i was gonna do is add some extra oil to the tank and just ride it at all speeds just not holding to the pin for a long period maybe 3-5sec.
As the saying goes, there is more than one way to skin a cat ( or poo in this case ). I know a guy that builds his own drag cars. I know it is not a 2 stroke, but he built the motors, ran them at idle for about 30 minutes, shut them off and then raced them. He told his customers ( he rebuilt any motor ) to break them in the same way you intend to use them. As in if you were going to rod the piss out of it then rod the piss out of it to break it in. Right or wrong his motors always lasted and ran strong. On my sleds though I just run them on and off the throttle with some short full throttle bursts from time to time and no constant cruising speeds. Always varying throttle. Never had any problems with this method.
Who won?
C
cbc24
Well-known member
lol but you ride like a girl still ^ lol jk
I break my engines in by letting it warm up then go for a trail ride and smoothly going through the throttle and clutch enguagement. never held wide open for a long time just hit peak rpm once or twice but i take it easy... ive broken my machine in on a 50km trail ride too the mtns before and it pulled good and strong
I break my engines in by letting it warm up then go for a trail ride and smoothly going through the throttle and clutch enguagement. never held wide open for a long time just hit peak rpm once or twice but i take it easy... ive broken my machine in on a 50km trail ride too the mtns before and it pulled good and strong
Rudy you can google Motorman and see an article he wrote about engine break in. His main point is that the MOST important thing to accomplish on break in is to get the rings to seat properly. He writes that the tolerances on modern engines are built in and that you don't need to "break in" bearings etc by running them at low speed so the final tolerances are what the engine builder intended. No heat cycles either. He also writes that there is "roughness"(cross hatch finish...) to the cylinder bores and that this lasts a very short time. He also writes that the rings need this "roughness" to seat properly and you have one shot at getting the most power out of your engine because the cylinders smooth out pretty fast. If you run in a low or part throttle the rings never get pressed into the cylinder wall when it's rough. So... Run up your engine to half throttle, hold it for about 2 seconds and let the throttle close. Let the sled coast down almost to a stop with the throttle ALL the way OFF. This will build a high vacuum in the cylinder which will help "suck" the fine metal particles off the cylinder walls. Do it 3-4 times at half throttle. Now do 3-4 pulls at 3/4 throttle everything else the same. Now finish up with 3-4 full throttle pulls. Don't forget to let off the throttle abruptly and let the sled coast down all the way almost to a stop or to a stop. Now just ride it. I would definitely add the recommended non synthetic oil to the gas tank and run the first oil tank with non synthetic. The non synthetic will also help the rings seat as it will not lubricate as well as the full. Good luck.
Matt when i do the 4 pulls at 1/2,3/4 and full do i have to stop and idle the sled for a bit?
Is it a good idea to mix non sythentic with sythentic?
Is it a good idea to mix non sythentic with sythentic?
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Nope, just do them one after another without a break. Motoman does his break in on a dyno so they stop and let the engine cool down after each "set". They don't have very good cooling on his set up but on the snow it's not necessary. You have what sounds like a perfect road run for break in on the way in to your riding area. Polaris syn and non syn are compatible. Hopefully your dealer put non syn in your oil tank for break in. I would run that tank down to 1/4-1/3 level to run it on non syn longer. Then just top it up with Polaris synthetic. Did he put oil in your tank so you just had to top it up with gas? Also, I think this is the BEST way to break in, I think you could do it pretty much any way and be fine so don't sweat the details too much. Like if you get cut off or come up on a group while doing your pulls. Just do it the best you can and you will be fine.
