1999 rmk 700 nitrous setup help - Snowmobile Forum: Your #1 Snowmobile Forum

MEGASNOWMACHINE · 11-01-2012, 11:42 AM

i have a very modified 1999 rmk 700. the only thing done to the engine so far is that it has boysen reeds and a different clutch. i just got a boss noss setup for it. will i blow it up? what if i use it rarley? or if i only give it a 15 shot? i just really want to know if itll last this winter. i know itll put ware on it but i have new cylenders and pistons and a head. will i ruin my crank?> i really cant afford A new crank.

white lightning · 11-01-2012, 11:51 AM

If you have NO idea how to work with it - dont use it. If its not setup right, you will blow it up. WL

MEGASNOWMACHINE · 11-01-2012, 11:54 AM

well i know how to hook it up but i dont know exactly what it will ruin. ps could i drill a hole in my boost bottle and put the hose in there?

white lightning · 11-01-2012, 12:42 PM

Honestly .. when it first came out on sleds in the early '00 - a friend of mine thought he knew what he was doing, installed it onto his MachZ and right away - he blew it up while racing. Ofc, he had money and he had time - he had to figure it out .. you know trial and error type of a thing.

To my understanding, you have to hook the lines to the airbox. Close to where the carbs are located. But I dont see why you cant use the boost bottle location. That would work too. WL

MEGASNOWMACHINE · 11-01-2012, 08:07 PM

ok well thanks for the help! what if i just used a 5-10 shot? just in the mountains and not that often

jordandakota · 11-02-2012, 09:52 AM

Is the extra temporary hp really worth an engine to you? Some would say yes because power is awesome, but personally I wouldn't want to risk it unless I knew exactly what I was doing.

white lightning · 11-02-2012, 10:28 AM

I never had nitrious on my sled before .. I know a few friends who have uses it for drag racings. Its a quick burst of power but in your case, what are you trying to accomplish? Why dont you upgrade to 800cc or 1000cc AC - at least you will experience more power at tap, rather than using nitrious and have a chance of an engine failures. Remember, winter is too short to be having downtime that you cant get it back. WL.

Renagade · 11-02-2012, 10:55 AM

i know someone who has more than my first
house cost me in his sled

because he had nitro on his
sled, he owned an auto repair shop and had
done several on cars before. but sleds
are waaaaay different. if u dont want to
tear into your motor soon and spend more
then your sled is worth, go for it.
im sorry im ranting, but i dont ride or even
speak to this so called friend because of
all the trips he wasted me cause of sled
melting down mid trip.

white lightning · 11-02-2012, 11:05 AM

Thats why I dont use nitrious .. its not worth it to be dealing with engine problems, just for a 10secs boost of power. (whatever how long the boost lasts for) If you want more powerful engines .. upgrade to a bigger CCs. WL

Renagade · 11-02-2012, 12:34 PM

Quote:

Originally Posted by white lightning

Thats why I dont use nitrious .. its not worth it to be dealing with engine problems, just for a 10secs boost of power. (whatever how long the boost lasts for) If you want more powerful engines .. upgrade to a bigger CCs. WL

^^^^^^exactly^^^^^^^^

Polaris650freak · 11-02-2012, 03:07 PM

Big bore and porting/polishing, good pipe set up, and good reeds and head domes will be a lot better set up and safer than nitrous IMO

Sent from my iPhone using Snowmobile.com Free App

white lightning · 11-02-2012, 03:30 PM

Quote:

Originally Posted by Polaris650freak

Big bore and porting/polishing, good pipe set up, and good reeds and head domes will be a lot better set up and safer than nitrous IMO

Sent from my iPhone using Snowmobile.com Free App

Yupp .. sometimes on the setup too. Too much of it ... you cant trail ride it. WL

jordandakota · 11-02-2012, 04:01 PM

Correct me if I'm wrong, but it seems to me that while mountain riding, you'd want all your power there 100% of the time, not just in 5-10 second bursts. I'd sell the nitrous kit and use that money for permanent upgrades, like port/polish and such. But, if it's worth it to you to put the kit on your sled, go for it.

**BC_Dan** · 11-02-2012, 09:19 PM

NItrous used to be a lot more popular until turbo technology caught up. Lots of times, you don't need the extra HP except for a very few times on the big slopes, so a burst is adequate to keep you heading up the hill. Now, with turbos on 2-strokes, you can have sea-level rated performance at high elevations on demand and you don't have to refill the bottle. There are still guys that run nitrous, but not as many.

ZRTEETH · 11-03-2012, 09:48 PM

I have to add to the negative feedback on using nitrous as well. Especially on a mountain sled. The reason I say that is because mountain sled engines are under alot more stress than average anyway because of the constant engine load climing a hill or mountain. Even if you do tune it right to accept the nitrous even just a 10 or 15 horse shot can really reak havoc on a stock engine that is allready under a heavy load. Putting nirtous to a 2 stroke is much like putting nitous to a 4 stoke with a turbo to. Anyone who knows about putting nitrous to a 4 stoke turbo, its like riding a fine line so to speak as far as destroying an engine. 2 strokes act much like a turbo powered engine on the inside because of the positive crank case pressure which you need to force fuel up threw the transfer ports. Hence the reason 2 stroke peak horsepower and torque hit at almost the same rpm. Thats also why when you can get a turbo to work on a 2 stroke, you have a mean power making machine. If it were efi than maybe because you would have more "safer" options as far as set-up. In a nut shell.... your asking for trouble even with just a small shot.

Outbound86 · 11-12-2012, 10:01 PM

I have been playing with nitrous since the 70's and it gets a bad rap because people do not understand air/fuel ratios -- simple as that. I have pulled the trigger on nitrous and never let off until the bottle is empty, but the air/fuel ratio was right on. If you do not know or understand A/F ratios then you better stay away from it or you will be walking back to camp. Nitrous is much like a turbo as it packs the cylinder with air and if you do not supply the right amount of fuel you will run lean -- simple as that. A lean mix at WOT will burn the engine down fast. If fine tuning your engine is something new --- get good help or sell it. If you feel confident and you are a good tuner you will love nitrous and so will your engine. Again, engine failures with nitrous are due to tuners-want-a-be ---- nitrous is lots of fun and cheap HP if done right. Do it wrong and motors go boom!!

Polaris650freak · 11-12-2012, 10:14 PM

^^^this guy hit it on the head

Sent from my iPhone using Snowmobile.com Free App

MEGASNOWMACHINE · 12-16-2012, 08:54 PM

wellll thanks for the input everyone! i have decided not to run this stuff lol. anyone wtb some nitrous??

Trip · 12-16-2012, 09:03 PM

I was going to start a pool on how long the motor would last