Has anybody had bogging problems after running in deep snow on any 700 triples. I have a 2000 SXR700, this has been a problem from the start. After running in deep snow, the bottom and mid range load up to the point at times the sled won't move at full throttle even. The rpm's will be down 1000 to 2000 from normal. If I flip the throttle multiple times usually the running will clear up and it will come back to the normal rpm. Getting in someone's track will clear it up faster but I like to break the trail. I'm running the Sno-tek prefilter and carb heaters. This year I've put CPR pipes w/ceramic coating on it and it seems even worse than with the stock single pipe. Anyone found a way to fix this? It really frustrates me when I can't go in snow on a snowmobile!
snomo101
New member
I had the same problem with my 2000 SXR600. The problem is back pressure through your exhaust. The snow covers the exhaust hole and does not let your exhaust out. The way to fix this is make or purchase a L type bracket that can be mounted under the belly pan in front of the exhaust hole. This will clear the path for the exhaust to escape. There is two holes already in the belly pan for this. I think Maximum Performance sells them for $10.00
Good Luck!!
Good Luck!!
NY_SXR700
Member
I have the same setup on my 01' sxr700 and it's fine in the deep snow (the triples have way too much gas going out a small hole to plug there is 3 stingers out the bottom, not a big single like the stock can). PM me or post your jetting, needles, fuel screw settings, primary clutch, secondary, gearing track tipe. My CPR's are coated also and it made a huge difference in how it runs. I also did the tempaflow which I am sure has helped also but my motor is so perfect this year it's a big relief not to fart around with it every time the temps change. I finally ended up dialing in my trail clutching yesterday. This is the first week I only have to wax it and and and and nothing else. Wow what a change. Doug
Yammerhead
VIP Member
I have the same issues with my 97 700SX in fresh powder conditions. I find after riding for a while in the fluff, the bottom and mid gets blubbery and eventually, the plugs start to foul. I am jetted down on the mains, but I am not really running the throttle open enough to be on the mains. My needles are in the stock position and many run theirs down half a notch, but I am a little chicken as it runs good in all the other conditions. One thing I tried the other day after 15cm of fresh was tape off all the hood vents. It was -23 deg C, so I wasn't worried about too much heat. I found it made it quite a bit better. The blubber didn't completely go away, but there was no wet clutch slippage and it never did bog out for me.
Boondocker-1
New member
Bogging in the powder
I HAD the same problem. This is how I got rid of mine.
1. turn the carb heaters off.
2. use a pre filter on the filter that runs across the dash
3. make sure that the area where your exhaust exits the belly is completely sealed. I cut some tin and used hi temp RTV to seal mine.
Hope this helps.
I HAD the same problem. This is how I got rid of mine.
1. turn the carb heaters off.
2. use a pre filter on the filter that runs across the dash
3. make sure that the area where your exhaust exits the belly is completely sealed. I cut some tin and used hi temp RTV to seal mine.
Hope this helps.
redsnake3
New member
buy an exhaust deflector from a mm600/700 or the mountain lite 500 fan. i couldnt see them being much more than 5 or 10 bucks.
grapeape
New member
The best thing you can do that is really cheap is tape off the under hood intake to the air box. This way if the exhaust backs up under the hood from snow up to the belly pan, you will still get fresh air. I did not need a jetting change on my sled, but I also added the pod filters to the dash.
Do you have aftermarket clutching with a steep helix. It won,t backshift in deep snow & seem like a jetting problem but aggressive clutching will do the same thing. Tighten the secondary 20 or 30 degrees to see if it helps.
Boondocker-1
New member
If you are riding in the deep snow and your sled starts burbling and cutting out and gets progressively worse you are more than likey taking snow into your air box. If you read my post above you will see how to fix it. Additionally, to improve airflow you can install a set of filter pods with prefilters in the dash. Don't tape off the screens you need them open.
grapeape
New member
Turk does have a good point as well, but in my case it was exhaust gas under the hood. It was easy to notice when the egt's dropped 3-400 all at once. If you don't have egt's, run the sled on it's left side a while, switch to the right, and if if bogs, bingo it's exhaust gas going under the hood and back into the air box
Boondocker-1
New member
How is the exhaust gas getting in? See number 3 from post above. For best results do all three.
I HAD the same problem. This is how I got rid of mine.
1. turn the carb heaters off.
2. use a pre filter on the filter that runs across the dash
3. make sure that the area where your exhaust exits the belly is completely sealed. I cut some tin and used hi temp RTV to seal mine.
I HAD the same problem. This is how I got rid of mine.
1. turn the carb heaters off.
2. use a pre filter on the filter that runs across the dash
3. make sure that the area where your exhaust exits the belly is completely sealed. I cut some tin and used hi temp RTV to seal mine.