fuel screws???

justaviper

justaviper

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Joined
Oct 12, 2006
Messages
486
Age
60
Location
Letellier manitoba
I just installed bender pipes on my viper, re jetted and I'm ready to re install the carbs. Should I adjust the fuel screws before I install the carbs? If so, witch screws are they? And how should they be adjusted. The sled ran perfect before, but with the pipes and re jetting I'm not sure if they need to be adjusted. Any info would be great, Thanks.
 
I too just installed bender pipes in November, I did not touch my fuel screws. The sled runs great! I think I will adjust the idle though. When I first started riding it I could notice more power but not what I was expecting. After two days of riding and 250 miles later. WOW!!! Talk about pulling the front skis off the ground. :letitsnow
 
Glad to hear it. I put the carbs back on and only had to adjust the idle up a bit. I did find the fuel screws, they were 1-3/4 turns out so i left them. I havn't ridden the sled yet. I'm looking forward to it though.
 
justaviper said:
Glad to hear it. I put the carbs back on and only had to adjust the idle up a bit. I did find the fuel screws, they were 1-3/4 turns out so i left them. I havn't ridden the sled yet. I'm looking forward to it though.
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The one thing I noticed about my sled now with pipes is that if you ride in powdery snow, it will bog down pretty good. I just bought an outerwear for my airbox and ordered a ram air pre-filter from mountain performance. I guess with having 3 pipes compared to one you are pulling more air through. So any snow injestion will make it run like crap. This remedy should work.
 
I used a hole saw and cut three 1 1/2'' holes under the filter for more air. I'm hoping to go for a ride after work. The trail is about 100 feet from my shop and was just groomed. Hope it don't blow!! LOL.
 
What are you guys using for jetting? Do you think the powder bog may be from the pipes getting cooled too much by the snow hitting them? I have a set of benders in the garage. I am thinking I will wrap and seal mine with header wrap along the portion of the expansion chamber?
 
viper48 said:
The one thing I noticed about my sled now with pipes is that if you ride in powdery snow, it will bog down pretty good. I just bought an outerwear for my airbox and ordered a ram air pre-filter from mountain performance. I guess with having 3 pipes compared to one you are pulling more air through. So any snow injestion will make it run like crap. This remedy should work.
Click to expand...


If your pipes are protuding past the bottom of the bellypan at the exit then they will have a bog in powder because it is so much easier for snow to plug them up. Cut them flush with the bottom of the bellypan, seal up the exit, and install an exhaust gas delfector from a mountain max/mountain viper.
 
viper48 said:
The one thing I noticed about my sled now with pipes is that if you ride in powdery snow, it will bog down pretty good. I just bought an outerwear for my airbox and ordered a ram air pre-filter from mountain performance. I guess with having 3 pipes compared to one you are pulling more air through. So any snow injestion will make it run like crap. This remedy should work.
Click to expand...


Couple things you deal with on the piped Viper & powder snow, First is the cooling effect of the snow getting on the pipe & cooling the pipe (Mountain Viper hood screens are much smaller mesh), Other is the snow getting on the pipe & turning to steam which in turn goes to the airbox through the Forced air induction, Block off all the underhood duct/vents to the airbox, Add some Flo-Rites in the pod behind the windscreen to make the motor suck clean cold air, No more powder bog & just miles of smiles. ;)
 
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