Break in miles and top end speeds

[YAMAJOHNNY]

I've got an '06 Apex ER with 400 miles on it. 168 picks, Woody's 8" Dooleys. Other than that all stock. I was going against my buddie's ski doo 600sdi and could not pass him. His sled is unpicked bone stock. My nightmare meter was at 108-109. He was dead even with me. Will this motor loosen up with more miles? or is this all I should expect? or did I pick a sled that was built on Monday? He commented that only the back 20% of my skis were touching the ice when going balz out. Thanks in advance for any input. YJ

 

[LazyBastard]

Yes you need more miles, and no, his is either not stock, or not a 600. Sounds more like an 800.

 

[tttario]

What were the conditions. If there is any amount of powder I slow right down. 123 MPH on the dreamometer on ice track with only 75 miles on it. Yamaha skiis stay down while running unlike the XP's that have them 2 ft in the air, which is extremely slow by the way.

Oh, and spanked my friends new 600SDI XP. Neck and neck with the 800R.

 

[Ported Hornet]

That doesn't sound right. My 07 RTX would stay ahead of my well tuned 800 REV anytime anywhere with a lighter rider on the REV. That was when the sled had less than 1000 miles on it. At 2000 miles my sled would destroy it. How did you break your Apex in, by the book right?

 

[KnappAttack]

If you broke it in easy, (by the book) it will take forever to come to life. Like 2000 or more miles. They run better with more miles, that is for sure. It will need geared down to a 23 on top for sure. Doolys will rob you of 1-2 MPH, but they are the best for getting rid of the darting. 168 studs are killing you in the speed department, 5-7 MPH for sure.

 

[YAMAJOHNNY]

What would be a good number of studs? I currently have them in the out side belts also.(It sure takes off nice). For break in, the first 150 miles had the throttle all over the place with a few short hard bursts and backing off. Then an oil and filter change. After that gradually getting on it more and more.

 

[Daranello]

will the Doo 5.7 skis also hurt your top end??

 

[Thewhitedogg]

It will get faster once it breaks in. Last year with 400 +/- miles i let her rip on a longer pull. Only saw 110 on the speedo and that was in great conditions(hard packed and flat county road). This year with 1500 miles I've seen 125 (113 on gps) on several occasions. Only mods to drivetrain are cr10ek's and 192 woodys.

 

[mbarryracing]

If you broke it in easy, (by the book) it will take forever to come to life. Like 2000 or more miles. They run better with more miles, that is for sure. It will need geared down to a 23 on top for sure. Doolys will rob you of 1-2 MPH, but they are the best for getting rid of the darting. 168 studs are killing you in the speed department, 5-7 MPH for sure.

Mike,

Will they accelerate fastest with the 23 top gearing and clutched to the 11,500 peak power?

Thanks,

Mauri

 

[KnappAttack]

Yes, they will accelerate faster geared down. It depends on the sled but the last one I broke in didn't start running RPM till 1000 miles. The one before that turned RPM by 200 miles. Stock ECU won't let it rev past 11,200 when it hits the rev limiter. Less studs are better for speed. I only run 168 in the 270 HP turbo sleds. 144 in the stockers. Now with the Iceripper XT sharp stud tracks out, I won't even stud anymore. These tracks are as fast as a track with no studs.

 

[mbarryracing]

Yes, they will accelerate faster geared down. It depends on the sled but the last one I broke in didn't start running RPM till 1000 miles. The one before that turned RPM by 200 miles. Stock ECU won't let it rev past 11,200 when it hits the rev limiter. Less studs are better for speed. I only run 168 in the 270 HP turbo sleds. 144 in the stockers. Now with the Iceripper XT sharp stud tracks out, I won't even stud anymore. These tracks are as fast as a track with no studs.

Mike,

Explain what you mean by it didn't start running RPM until 1000 miles? Does this mean that clutching and gearing might not be enough to let it rev freely? I only have 230 miles on my 06 GT, when I stab the throttle it hits about 10+ then pulls to 11+.
Should I even messs with it if it gets better?

Thanks

 

[Ported Hornet]

Yes, they will accelerate faster geared down. It depends on the sled but the last one I broke in didn't start running RPM till 1000 miles. The one before that turned RPM by 200 miles. Stock ECU won't let it rev past 11,200 when it hits the rev limiter. Less studs are better for speed. I only run 168 in the 270 HP turbo sleds. 144 in the stockers. Now with the Iceripper XT sharp stud tracks out, I won't even stud anymore. These tracks are as fast as a track with no studs.

Mike,

Explain what you mean by it didn't start running RPM until 1000 miles? Does this mean that clutching and gearing might not be enough to let it rev freely? I only have 230 miles on my 06 GT, when I stab the throttle it hits about 10+ then pulls to 11+.
Should I even messs with it if it gets better?

Thanks

I am pretty sure KnappAttack meant that the sled he was breaking in didn't let loose or break in until 1000 miles. Basically it wouldn't pull peak power rpm until then. If your sled is pulling 10500 already, lets just say you have a good one!

As far as studs go, I run 168 1.450 studs and I really that this is the right amount for my sled and riding style, but the is more than 1 way to skin a cat. I am still able to pull 124 dream o meter speed on a plowed road with the stock ripsaw. On last note, break them in like you ride them, also another subject with many conflicting opinions.

 

[kotapug]

I just turned 600 miles on my 07 and I get 10500 all the time and it ran 101.9 @1000' Sun. So are you guys saying I should keep seeing a increase in speed ? I hope so

 

[KnappAttack]

From what I have seen, if it pulls STOCK clutching to 11,000 its a very good one with 23/38 gearing. If its a 07 RTX, they are geared lower with a 22/38 and they will pull to 11,000 pretty easily. Reason is any sled with stock clutching, geared down pulls a higher rpm easier. Some will break in quicker than others. My last machine wouldn't pull 10,800 till about 1000 miles. Now it's finally my fastest stocker with about 1800 miles on the clock. it will turn 11,100 in the UP of Michigan, (real good oxogen up there with the big lake and all the trees) and 10,800-10,900 here in Minnesota. I like to heat cycle the engine 3 times, (completely cold to hot to clod again) then break them in with hard with wide open runs to seat the rings, for best ring seal. I then will run change oil right away and run cheap old petroleum oil till about 2000 miles and switch to synthetic oil then. Nothing more than 5/30 weight either.

 

[MXD]

So with 850 miles on my 06 ER (100% stock) I'm seeing about 111 on the spedo at about 10,300. Am I in the range?