Seriouslly in need of some help!

[DLish715]

Ive posted several topics about this yet no answer. My last post I got rit of the bog to a point it is still a little hesitant out of the hole but ALOT better since i plugged the ethanol switch back in even though I run 87. Its an 05 m7. Speedwerx Hypershift clutch kit Speedwerx high flow intake and a can FYI ran great with can before.

http://www.snowestonline.com/forum/showthread.php?t=204240


HELP WOULD BE GREATLY APPRECIATED

 

[KAWGRN]

usually a bog means lean,, so you can increase engagment to cover it up,, or add the fuel that it asking for, give it what it wants!!!! I would add an intank reg or a fuel controller, assuming that your clutches are in good condition and your primary spring hasent sacked out???

 

[westech]

Primary

Check your roller and wieghts on your primary....if one is binding it will start to eat your weight, but you won't be able to see it unless you remove your belt and close the sheaves.

 

[DLish715]

Check your roller and wieghts on your primary....if one is binding it will start to eat your weight, but you won't be able to see it unless you remove your belt and close the sheaves.

What would this have anything to do with me plugging in my ethanol switch on my cdi box? Did you read the post I posted in the link? My low end bog was horrible it was un-rideable before I plugged the switch in even though I'm running 87 octane

 

[White Rad]

could have everything to do w/ a low end bog a tight roller, flat spot in weights, or overtightened post that the weights swing on make it hard to get the primary to start compressing on the low end = bad bog. its so easy to check i agree its a good starting point at least

 

[PowerJoe]

What do you mean by speedwerx intake? Just the larger diameter horn? That shouldn't cause a bog but any other air box mod might?

I would start by swapping any parts that are not stock, back to stock to rule things out like the can and intake. If you have a buddies M7 to rob parts from, start slowly changing everything over one at a time until you figure it out.

The compression sounds low to me for sea level. I think it should be in the 140 range. Might be low compression in combination with intake mod and can.

Does the bog only happen when you mash the throttle? What happens if you roll the throttle on? This would help you determine if it is fuel related or drive related. My guess is that it is fuel related. It also doesn't sound electrical

I read both your posts and you're not giving us much info. As always the more information you give the better we can help. So many things could cause a bog.

 

[DLish715]

What do you mean by speedwerx intake? Just the larger diameter horn? That shouldn't cause a bog but any other air box mod might?

I would start by swapping any parts that are not stock, back to stock to rule things out like the can and intake. If you have a buddies M7 to rob parts from, start slowly changing everything over one at a time until you figure it out.

The compression sounds low to me for sea level. I think it should be in the 140 range. Might be low compression in combination with intake mod and can.

Does the bog only happen when you mash the throttle? What happens if you roll the throttle on? This would help you determine if it is fuel related or drive related. My guess is that it is fuel related. It also doesn't sound electrical

I read both your posts and you're not giving us much info. As always the more information you give the better we can help. So many things could cause a bog.

Yes the original highflow from speedwerx its just the larger diameter intake to the air box. Weights are brand new springs are brand new. It ran great with the can on it before. It all seemed to occur after I had to put 92 in it? Only thing available. Belt is brand new. Its only when you mash on it out of the hole. once you get past low end mid and high range the thing rips. I personally believe its a fuel problem myself. I don't think any of these mods have an affect on it could be wrong. Any other information you think I could provide let me know. This is really starting to annoy me. I'm at a loss

 

[DLish715]

What do you mean by speedwerx intake? Just the larger diameter horn? That shouldn't cause a bog but any other air box mod might?

I would start by swapping any parts that are not stock, back to stock to rule things out like the can and intake. If you have a buddies M7 to rob parts from, start slowly changing everything over one at a time until you figure it out.

The compression sounds low to me for sea level. I think it should be in the 140 range. Might be low compression in combination with intake mod and can.

Does the bog only happen when you mash the throttle? What happens if you roll the throttle on? This would help you determine if it is fuel related or drive related. My guess is that it is fuel related. It also doesn't sound electrical

I read both your posts and you're not giving us much info. As always the more information you give the better we can help. So many things could cause a bog.

Yes the original highflow from speedwerx its just the larger diameter intake to the air box. Weights are brand new springs are brand new. It ran great with the can on it before. It all seemed to occur after I had to put 92 in it? Only thing available. Belt is brand new. Its only when you mash on it out of the hole. once you get past low end mid and high range the thing rips. I personally believe its a fuel problem myself. I don't think any of these mods have an affect on it could be wrong. Any other information you think I could provide let me know. This is really starting to annoy me. I'm at a loss

 

[PowerJoe]

I doubt that it is octane related or ethanal plug related. If it is, it means it is exagerating a problem somewhere else.

I run with 2 other M7's but only at 6,000 feet and up. We have run 85-91 octane with no change in how the sleds run. Also at this altitude the compression is probably down in the 120 range. The 2005 in the group has the high flow horn and a can (not sure if it is SW) and he has no bog.

What if you are going 40mph and completely let off and then get back into it. Will it bog? If not than it might be clutch releated. Also does it change when the sled is cold or hot? If not that might also support the clutch related.

 

[DLish715]

Well thats when I first noticed the problem with the bog after the fuel. When I changed back the problem still occurred. The sled runs real good when I plug it in besides its a little hesitant out the hole nothing major at all very ride-able. If i unplug it you cant even ride it out of the hole it is horrible??? Plugging the switch in and out just changes the timing correct? I'm sure the problem exists some where else but this seems to make HUGE effect on it?

 

[DLish715]

Well thats when I first noticed the problem with the bog after the fuel. When I changed back the problem still occurred. The sled runs real good when I plug it in besides its a little hesitant out the hole nothing major at all very ride-able. If i unplug it you cant even ride it out of the hole it is horrible??? Plugging the switch in and out just changes the timing correct? I'm sure the problem exists some where else but this seems to make HUGE effect on it?

 

[Canuk]

could have everything to do w/ a low end bog a tight roller, flat spot in weights, or overtightened post that the weights swing on make it hard to get the primary to start compressing on the low end = bad bog. its so easy to check i agree its a good starting point at least

So, to add to this I recently experience a bog with my new-to-me M8. Today I took my clutch off and as suggested I had a bad roller that would not roll. Thanks.

now... how to change it?

 

[PowerJoe]

I think the rollers are not replaceable. I think you have to buy a whole new spider assembly with the rollers on. You also need special tools to take the spider off of the clutch.

 

[jughead]

Then the spider breaks

Better off to just buy a new clutch. Now you know why the dude was selling it... $548.00 for the last one.

 

[Canuk]

that's crazy. i can't believe you can't replace a simple roller.

what about these?
http://www.hotseatperformance.com/psp/showdetl.cfm?&DID=29&Product_ID=3342&CATID=250

 

[jughead]

That would be nice

Those rollers are not for a clutch on an M8.

 

[m7ascent]

Hey DLish, I haven't read your other posts about your problem, but reading this one gave me a few ideas for you to try out...

1. Check your weights for free swing, if you take your belt out and compress the clutch a bit, you should be able to move your weights with ease, if you just put new weights in with the speedwerx clutch kit, you could have one or more over-tightened and thus they would not swing easily. Also check that your rollers spin smoothly and don't have any flat spots.

2. Check that your oil pump is not sticking open and over oiling when you let off the throttle, mine does this every once in a while and it bogs when I hit the throttle. Best way to check is to unhook the linkage from undernieth by removing the belly pan and cycle the oil pump open and closed and see if it wants to hang up anywhere.

3. You don't want to hear this, but try putting the stock can back on and see what it does, just seems like the 7 likes the stock can the best, unfortunaly it weighs a ton and makes the sled sound like a sewing machine...lol.

4. Check the bushings in both your cluches, you just don't want to have excess play in the movables from worn bushings.

5. Just FYI it's been my understanding that the ethanol plug adds like 5% fuel to the whole map (not timing) so that's why it runs so fat unplugged, even with ethanol enriched fuel, my sled runs like crap with it unplugged, the '05s seem to be fat enough to run ethanol enriched fuel with the plug still connected.

6. Another thought, it seems that I have read about more than a few people that have had a bog in the low end and have put a fuel pressure regulator in tank and actually reduced fuel pressure and been able to get rid of the bog and have better all around runability, something you could try if everything else seems to check out, just watch your plugs/piston wash.

To the guy with the M8 with the bad roller, get ahold of freeagent on here, or better known as Oregon Trail Powersports and get your self a new primary cluch with a new spring and weights, it will probably cost you around $400ish but it will be a really good tune up for a sled with a few thousand miles on it. It's just a better option than only replacing the spider assembly. I just put one on my M7 cuz I had a smoked roller and threw a weight when the bolt broke, it made it a whole new sled.

Hope this helps you guys out, keep us posted on what you find and hopefully it will help others!

 

[Canuk]

Those rollers are not for a clutch on an M8.

Too bad. I see now they are made for ATV's.

 

[CATSLEDMAN1]

suggestions

1. check around on the m8 clutch price $250 will cover it if you get on the net.

2. M7 are weak on the bottom anyway............you most likely have clutch issues...........clutch's belts and their adjustment are always going away and track drag and snow conditions all can cause bog.......always, efi jetting seldom changes or just quits.

clean belt, clean new clutch's......I'm betting bog is gone