09 Dragon 800 not getting over 8,000 RPM's. Check out my set up.

[THRILL_SEEKER]

we ride 5000 to 8000 withe same sled and simmilar set up and we run 10-60 weights and they work well, pull 8150 to 8250

 

[cascadesnowjunky]

The weights do seem heavy for your elevation, but I bet you are like more than half the other dragons and are pig rich on top end. My 09 dragon would not pull rpm no matter how light of weights or how stiff of primary spring I ran. I had to put a pcv on it and trim the fuel on top.

 

[rmkboxer]

the belt should not be worn out at 500 miles you should be getting over 1000 miles out of the belt. I have had good luck switching to a 54-38-46 helix it works great

 

[dude]

Thanks for all the good thoughts. What do you guys think about the fact that I have not cleaned the small air port holes to either side of the exhaust valves and have 3,000 miles on it? I read on another post that they can get clogged up and not let the exhaust valves open properly? If so what has worked for anyone to clean out the holes?

 

[dude]

The weights do seem heavy for your elevation, but I bet you are like more than half the other dragons and are pig rich on top end. My 09 dragon would not pull rpm no matter how light of weights or how stiff of primary spring I ran. I had to put a pcv on it and trim the fuel on top.

I do have the PCV with the SLP map. Did you find you had to trim the fuel on the top with the SLP map?? Or were you working with a different map?

 

[JuicedRMKryder]

68's are closer to what you will need on boost.Never had much luck with SLP recomendations on wts

 

[cascadesnowjunky]

I had the slp single with there map and had to take fuel back away from the midrange where they added a bunch and took more away on top. I ended up somewhere around -14% on top

 

[dude]

I had the slp single with there map and had to take fuel back away from the midrange where they added a bunch and took more away on top. I ended up somewhere around -14% on top

Cool. That helps. Do you have any map copies, or screen shots of your map info you could share somehow?

 

[cascadesnowjunky]

Pm me your e-mail address and I will see if I can send it to you.

 

[evandaigneault]

try a straight 38 degree helix. Works great for powder riding.

 

[dude]

Pm me your e-mail address and I will see if I can send it to you.

I PM's ya. Thanks...

 

[dude]

try a straight 38 degree helix. Works great for powder riding.

Thanks... I may try that too.

 

[crashnbash]

the belt should not be worn out at 500 miles you should be getting over 1000 miles out of the belt. I have had good luck switching to a 54-38-46 helix it works great

The life of a belt is greatly affected by clutching, gearing, snow conditions, break in, and riding style. When any of those are off, like clutching and gearing the life goes way down.

A small helix like what you recomend does work great for higher elevations.

 

[dude]

Dirty small air port holes to either side of the exhaust valves???

What do you guys think about the fact that I have not cleaned the small air port holes to either side of the exhaust valves and have 3,000 miles on it? I read on another post that they can get clogged up and not let the exhaust valves open properly? If so what has worked for anyone to clean out the holes?

 

[crashnbash]

It never hurts to clean any part power valve. Pull the them off and take a look, the gaskets are cheap. If you do clean that passage out make sure you don't knock any crap into the motor.

 

[dude]

It never hurts to clean any part power valve. Pull the them off and take a look, the gaskets are cheap. If you do clean that passage out make sure you don't knock any crap into the motor.

So what would you say, piston up on the side you are cleaning or down. ie any little pieces of crap getting on the top of the piston or falling under it toward the crank? I know in a perfect situation no crap falling in would be best but I can't see how you could clean out those little holes with out pushing some chit into the motor, right?

 

[crashnbash]

I would rather have as little as possible land on top of the piston, I think it would be easier to get any out that fell in if it landed on top of the piston. But I have never had to clean that little passage way.

 

[dude]

So what would you say, piston up on the side you are cleaning or down. ie any little pieces of crap getting on the top of the piston or falling under it toward the crank? I know in a perfect situation no crap falling in would be best but I can't see how you could clean out those little holes with out pushing some chit into the motor, right?

Any other thoughts on piston position while cleaning the small EV air ports?

 

[cr2nuts]

Just put the 10-58 polaris weights in it and have fun.

 

[JDen]

I fought with the low rpm problem on mine all last season. Just found a broken motor mount last week, I would bet I found my problem, maybe have a look at yours. Just a thought anyway.