I was wondering if other polaris 2-strokes, particularly trailblazers run much better when the engine is cold and just started. When running with a cold engine my trailblazer is more apt to pulling the front wheels off the ground but once it is up to temperature that power seems to fade away. Is this normal for polaris engines?

 

yes man,this pretty normal especially when modded,mine 2 stroke scrambler scream like a banshee and pull like a zilla the first 5 min of extrem riding,but as soon the engine get warmed up and at peak temp the throttle response become slower,less crisper,and less power as well...they do that in stock form also but seem less suffering,they're heavy,
the radiator isn't the cooling capacities to get peak engine performance all the time or the cooling system on those machine need check up.

 

My trail blazer does the same thing when its cold out or when you first start out it goes like a raped ape until it gets warmed up then it seems to bog down.

 

Its the clutch!

I'm experimenting with a small internal fan too see if that
helps!

I'll let you know what I find out!

 

talonhawk, how did you figure out it was the clutch?

I could see that as a possibility because there are restrictive pipes for venting the clutch. What kind of fan setup are you using, any pics?

 

I'm using a 1 1/2" x 1 1/2" cooling fan that I got from
Radio Shack. It pretty much fits inside the intake vent
of the clutch housing. The lower one, the top is the
exhaust. I just figured that if the belt would stay cooler,
like it is when you first start to ride, then maybe if I
added a fan that it would do the trick. I just started testing
it today. It does seem to make a difference. I would like to
run some more test before I can say for sure!!!!

 

Talonhawk

Keep us posted on how it works. by the way how much did it cost you .

 

I might add that most 2 cyclels are jetted just a shade richer than where they make the most HP. The engine will run more 'crisply' when only partly warmed up, or on a chilly day. Do NOT lean it out too far, though, or you will risk detonation, and either a siezed piston or one with a hole burned through it.

Farmr

 

Conkster,
The fan cost about $8.00 bucks and with the four small
screws and screw clips, not more than $12.00 dollars total.
On the TB if you follow the vent down from the top there is
a junction with a flex coupling. Its right before the vent
goes down the frame and into the clutch housing. If you take
that long section out the fan will fit just inside the top
opening. I've got it wired to my head light switch so I can
turn it off and on at will. Now all that I need is some type
of external thermostat to see if there is any difference in
temps. in the clutch housing.

 

I have never noticed this on my quads. I will pay closer attention the next time I ride.