Deep powder bog on 01 srx 700

S

srx4life

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Dec 16, 2007
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Age
43
Location
iroquois falls Ont, Canada
I was wondering if anybody can tell me what to do or check for to fix the deep snow bog on my 01 srx 700. I love the sled but cant seem to go off the trail very long without loosing all the power. Other than that issue the sled is a rocket and runs fine. Please Help!!!
 

funny I was just talkign anout this today with my buddy we have 3 feet of snow now and his srxwith a 1.25" track will bog down, my srx piped viper dosnt with a 1" track but i will spin myself a nice hole.

we came to the conclusion that its probably snow on the clutch. causing the belt to slip.
 
heres what i did to my srx.....cold air intake, exhaust deflector, and new plug wire caps....oh and keep the heated carbs off....always had a bog in the deep stuff then went to pack trail was fine.....with these mods i have no problem in the deep stuff keep her pinned no problems....
 
Thanks for the replies! However my intent (if possible) is to fix this problem without buying mods. There must be some simple fixes, or tricks you guys have come across. I am having a hard time believing a snowmobile can't go in snow? At this point up in northern ontario we have a good amount of snow but winter has just begun and i already cant follow the boys anytime their is any loose snow.
 
The exhaust deflecter is probably the way to go. The snow blocks the exhaust and wont let it rev. The SRX sits pretty low to the snow.
 
I have a factory Mountain SRX and it comes with an exhaust deflector and a removable plastic cover for the left front air intake (clutch side)...I use the cover in the powder and turn on my carb rail heater...no problem. :letitsnow
 
Most often, deep snow bogging can be blamed on the increased load that deep snow provides. The sled works fine on hard pack but the power required to operate the sled on hard pack is much less than the power needed to operate in deep snow. Chances are your sled is over geared and while your sled works great on hard pack, the gearing is causing your clutches to operate at a higher temp than they should. Operate your sled on twisty trails for 30 minutes and the transmission is hot and the springs are hot and soft. Pull off the trail into the fresh and deep, the transmission will be slow to react and the engine losses throttle response. Using a short gear set (higher gear ratio) will cause the transmission to operate through the entire working surface of the clutch faces. IMO, the solution is multi level and you have to pay attention to things like under hood steam, plugged exhaust, carb heat and snow cooled pipes, but most of the solution can be found in gears and clutching. Next time you pull into the deep snow and your sled boggs, open the hood and feel the driven clutch to see how hot it is. You should be able to comfortably hold your hand on the driven clutch. Chances are it will be very hot so be careful. BTW, I have seen them so hot they would sizzle when removed and dropped in the snow. If it is hot, you need to do whatever is needed to cause it to run cooler, like shorter gears and/or added cooling. Once you make the transmission work properly, you can go to work on the other issues. Hope this helps you.
 
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Just order an exhaust deflector from a '98 Mountain SRX from a yamaha dealer, or from any year mountain max.
 
As everyone else i have the same problem. I put new plug caps on , no change. It`s not drawing too much power in the deep stuff! It has something to do with the hood vents getting covered! All i have to do is brush them off and the power is back till they fill up again. There have been many theories talked about on here about this but no real true answer. I think the cold air intake has to help alot! My 97 sx700 never had this problem but they had a intake on the back of the hood by the bars. Guess i`ll have to try and make one to see if that is the trick.
 
I seem to have the same symptom as NYsledneck, it seems as if when I clear the vents and let the sled idle for a minute the power returns until snow covers the vents again??? I have not gone back out for a ride to check the clutches for heating but im suspecting the problem has to do with snow in the cab or exhaust restrictions... All good points to pay attention to!!! thanks to all for your input
 
Go over to the mountain section, there is about a five page thread that has beening running for a month or so about the bog.
 
is your whole airbox on? I had my top half off, and mine bogged BAD! then I put it back on and it went away. all day powder over the hood no trails, no bog..
 
sled is stock with no mods to airbox. I have taken snomoguy's advice by looking at the thread in the mountain section. IMO from reveiwing the posts is that the problem may stem from the engine inhailing moist/warm air through the airbox caused by the steam coming off of the exhaust/engine??? They claim that the "warmer" air causes the carbs to pressurize and affect performance.. Any thought's on this????
 
Well I have been dealing with this issues since I bought my srx....I did some testing and I can tell you that if you just pull over in about 2ft of snow and stop. Then get on the throttle and go to take off that the snow covering your exhaust will cause a bog(atleast on my sled). But there is another issue with snow under the hood touching pipes or creating steam. I have found that if I cover my vents I don't have a bog, if I am moving and my exhaust is not plugged with snow.....There is more than one issue, but try stopping in snow up to the bumper and starting again, with the exhaust covered and you will see what I am talking about....
I am buying a deflector off a MM and then I am going to make preflilters for some of my vents!!!!!
Oh and I also made plastic covers for the vents under the bumper......I have been running it like that for 1500 miles without any problems..
Just my results
RR
 
That is one of several theories, one that I don't think is the problem. I know of a guy that had a mesh hood, problem was WORSE on his sled. No way the under hood air could "pressurize" with a mesh hood.

I'm not riding yet, but am going to try to fix it on my sled this year. I really believe that since snow entering the hood compartment is when the problem starts, putting pre-filter material on the hood screens should solve it (I would not block them so no air can enter, triple pipes make a lot of heat!). That or blocking all under hood air from entering the air box, although SNAKEBIT has blocked all under hood air and still has the bog. Several others say that cured their problem. Yamaha is the only sled maker that takes under hood air, and I've never heard of this problem on any other brand of sled. Since I already have flow-rites in the dash for cold air, this is the first thing I'm going to try. Maybe it will take both to cure it, who knows? I will be posting my results when I get a chance to ride in the light, deep powder that causes this problem. Mine doesn't do it unless the snow is really "fluffy", the kind that can easily mist through the openings on the hood screens.

If you don't have an exhaust deflector, definitely put one on. I would bet this is contributing to your bog, but I highly doubt it will cure the whole problem.

(edit) Hey RIVERRUNNER, you beat me to it. Glad to hear your results.(edit)
 
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the more i think about this Its making me think sense the srx carbs arnt vented to the airbox, maybe there is a problem with presure under the hood or the carb venting.

I dont have an exhaust deflecter and with stock srx can, I dont have problems on my viper which is vented to the airbox.

Some one should try to vent there carbs to the airbox, just change your mains to 158.8s
 
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