Hello guys, I just bought a 2006 660 Rhino. I really like it. This is my first side by side. It is all stock but I had it snorkeled the day I got it with all 1 1/2" pipe. It runs fine but it doesnt have much power and every now and again it back fires. Ill bet the top speed is only about 20mph. A old 250 4 wheeler takes off better than my rhino.

What do I need to do to get it to get some power. I dont have tons of money to through in this thing.

Also. This thing is LOUD. How can I cut the motor noise down a little?

THANKS

did it run better before you snorkled it? did you re-jet it when you snorkled it

I really dont know. I only drove it on my trailer. No, I didnt rejet. Will the jet kit tell me what jet size to use? Do you think it will help much? Thanks

will a CDI box help with power? If so , What is the best for the $$?

I would pull the snorkle off and rule it out as your problem first. Then if it runs better, rejet the carb

From your description I would say it couldn't run much worse and still run at all...

For starters...that snorkel is a complete disaster...sorry...but you need to double the I.D. of that tube and reduce/remove the bends to get something with reasonably good power and run-ability both...

Jetting down won't help...in fact it would probably hurt some...

If you have the stock CDI now...then the MSD 4240 CDI for the 660 Rhino we sell is absolutely the best bang for the buck...

CDI

Regardless of what anybody tells you...the CDI will not add power...it will allow you run higher rpms and will defeat the stock cdi's speed limiter...the stock cdi will hold you to 40ish w/o the MSD 4240...

Are you SURE you need a snorkel...??? Maybe you do...if so re-do it...and if your carb is all stock and never been opened (that is probably a good thing for you) then you will at least want a bigger pilot jet...at least a 45...especially with a snorkel...

Good advice...go one further...first take the snorkel off...try it...then take the air box lid off and try it again...just for reference...see what your speeds are...how it accelerates...and how it takes off from a stop when you floor it hard from a stop...don't roll it on to test the hole shot...with good air flow and no malfs...correct jetting...you can stomp it from a stop and take off like scared rabbit...

Note that the air box lid holds the filter in...don't go dirt riding with the lid off and filter not secured...this is just a quick test to see what your power is...

Also take your spark plug out and inspect it...

Once you have it running half way decent it will be time to open/inspect/clean/service your cvt...and if you want more spunk and more top speed upgrade to a higher performance sheave/weight/spring combo like the JBS...

the 1 1/2 inch pipe is definatly not doing you any good, getting the jetting right will also help alot. i had to adjust mine a couple times before i had it right but got to do it if you want a snorkle. i use my snorkle often so thats why i did it, but if you really dont need it isnt worth the trouble. i would take it off and run it and make sure thats whats doin it. im guessing you are getting some noise out of your snorkles too. they wont help with your noise problem

I just went out there and tried running it without the airbox lid. Runs the same. Im going to check that spark plug also. Havent done that yet.

Check this out, I just found that the rear motor mount was broken and someone welded a piece of metal to it and and now the motor is welded to the frame. Well hell. The exhaust pipe in the bend before the muffler has 2 cracks in it. Thats where all the noise is coming from. Is it possible that I am loosing power there?

Maybe alittle? When you hold it to the floor are you hitting the rev limiter (till it feels like cutting back), or does the rpms ever get that high? Also could be a cvt issue with weights or a belt.

x2 on that...

Are you saying your top speed was still only 20mph in high...

Make sure your coil/spark-plug wire/cap/connection is all good...remove the plug and take a picture...do it on white paper background and make sure you get one that is clear and send it to me...

The cracks in the pipe if they are close to the head will cause back-firing on decel but would not cut your power so bad you could only go 20 mph...

Also... 20 mph... rev limited... is your reverse gear indicator coming on in 2wd high... and you are testing your top speed in 2wd high right...if in low put it in HIGH...

Take the CVT cover off...and rev it neutral to full shift out and see what it does...then remove the primary sheave and clean/inspect the insides where the rollers travel...

Funny you ask about the reverse gear indicator . A few times when I was riding, The reverse light would start blinking . Also , Yes , the RPMs and hight and hitting the rev limter

BINGO...you found the source of your 20mph top speed problem...the reverse speed limiter is engaging and it holds the top speed to 20 mph...

Under the air box (which you should get rid of and buy one of my intakes... ) there is a switch threaded into the engine block...that switch is normally closed providing a ground to the CDI telling it the vehicle is NOT in reverse...when the gear is in reverse...the switch opens...removes ground...that signals the CDI is in reverse...the reverse light comes on...the vehicle is held to 20mph...

Find the switch...it's a green wire with white stripe...follow it back about 1' in the wiring harness...it has a disconnect...disconnect it and ground it...then test your speed...if it will now go 40ish THAT problem is solved...

NOTE...when you permanently ground that wire the reverse light will never come on in reverse and you will be able to hit 40mph in reverse...so you MIGHT like it that way...then again you MIGHT want to just do this to confirm the problem and then correct it in a manner that restores the reverse light/limiter when in reverse without malfs in forward gears...