have seen guys go way light on weight and still not gain rpm.. try it but dont be surprised...lol...I would like to see how rich/lean you are at wot...that would shed some light...do you know how to read plugs/piston wash?
question for those who clutched their D-8's
- Thread starter AKSNOWRIDER
- Start date
have seen guys go way light on weight and still not gain rpm.. try it but dont be surprised...lol...I would like to see how rich/lean you are at wot...that would shed some light...do you know how to read plugs/piston wash?
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aebsledder
Well-known member
Plugs and piston wash
My plugs do seem a little dark, I switched them after about 100 miles with the premix in the tank. I haven't checked them since. As far as piston wash, only what I have seen on here. I have not looked at my pistons to see what they look like. Is there an easy way to do this other than pulling off the cylinder head? How about dark little spots around my exhaust when at idle? My sled did that last year too, but the motor ran good then anyways.
Maybe when I get back to MT I will do some more inspecting and take some pics. I have thought that it may be running too rich, but not sure how to adjust. I wasn't sure if it was as "simple" as adjusting the oiler, or if you have to adjust your whole fuel map. I am leary of doing this on my own, I don't want to go to lean and screw it all up.
My plugs do seem a little dark, I switched them after about 100 miles with the premix in the tank. I haven't checked them since. As far as piston wash, only what I have seen on here. I have not looked at my pistons to see what they look like. Is there an easy way to do this other than pulling off the cylinder head? How about dark little spots around my exhaust when at idle? My sled did that last year too, but the motor ran good then anyways.
Maybe when I get back to MT I will do some more inspecting and take some pics. I have thought that it may be running too rich, but not sure how to adjust. I wasn't sure if it was as "simple" as adjusting the oiler, or if you have to adjust your whole fuel map. I am leary of doing this on my own, I don't want to go to lean and screw it all up.
how much oil does it burn on a tank of fuel? should burn 1 qt for each 10 gallons of fuel(or just a bit more)plugs should be light cardboard to dirty white when cut clean ona long pull(shut it off while at full throttle ,keeping the throttle wot until it stops) then read the plugs.....you can pull the plugs and exhaust valves and shine a light in the exhaust opening while looking thru the plug hole....a rich tps setting can causeit, a plugged/restricted intake can, fuel map ,or any of a number of sensors....one thing I am wondering that might be causing some of these sleds problems is over voltage...it can cause fuel pump to pump harder(richer), might be worth throwing a good fluke meter on during a ride and use the min/max record feature to see what max voltages are on the hill.....
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aebsledder
Well-known member
I will check my oil consumption more closely on my next ride. I haven't noticed anything out of the ordinary, but I might be focusing on the wrong stuff. Haven't really had enough snow to burn through a whole tank of fuel yet, but I can do the math and figure it out when I go next.
Aebsledder do not be surprised if the clutching changes have no effect on the top end rpm. I have tried so much stuff I am at a total loss right now, I have changed weights as much as 8 grams with zero effect on top end rpm. I have tried diff. springs in the primary and secondary,added derlin washers, geared down to 2.27, slp pipe, air horn, venting, checked and adjusted tps, tried diff. power valve springs, tried running power valves old school plugging them off and bypassing solonoid, reshimmed primary and had it balanced. dealer also checked everything, and still will only pull 7950-8050 rpm. I am going to try a fuel control box next, I believe after all that I tried and checked its a fuel problem. I think it is rich on top and I am sure its lean at about 5600-6500 rpms. I hope this pc-v box with a good map works because if it dont I may be done with polaris for a while. It would be a different story if I was an isolated incident but I think its the other way around, there are more that run like crap than run good. I do not mind spending money on clutching and such but when engine dont run right the rest is pointless. Sorry for the rant but I am getting very disscuraged, hopfully everyone can figure this out together because this is an awsome chassis to ride.
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aebsledder
Well-known member
I feel your pain
Trust me, I do. Has yours ever ran right? That is the only thing that keeps me going on this deal. I remember when it ran good a few times and it was really fun to ride. As far as the PC-V goes....My friend has a PC3 on his 08 D8 with the update with SLP's latest map. He hasn't noticed any difference at all. He pulls about 8100 rpm's on a good day. I have seen people on this forum who seem to have a night and day difference on theirs when they installed a PCV. Hopefully this will be the case with you. Personally, I don't think people should have to spend an additional 500 bucks on an aftermarket accessory to make your sled run right. I know that we all have some serious coin invested in these things anyways, but that doesn't justify having to throw more money at it. I am sure I will look into getting one if that is the only option I have left, I just wish it wasn't necessary. Good luck to you and keep us posted...Somehow it is strangely comforting knowing other folks are going through the same stuff.
Trust me, I do. Has yours ever ran right? That is the only thing that keeps me going on this deal. I remember when it ran good a few times and it was really fun to ride. As far as the PC-V goes....My friend has a PC3 on his 08 D8 with the update with SLP's latest map. He hasn't noticed any difference at all. He pulls about 8100 rpm's on a good day. I have seen people on this forum who seem to have a night and day difference on theirs when they installed a PCV. Hopefully this will be the case with you. Personally, I don't think people should have to spend an additional 500 bucks on an aftermarket accessory to make your sled run right. I know that we all have some serious coin invested in these things anyways, but that doesn't justify having to throw more money at it. I am sure I will look into getting one if that is the only option I have left, I just wish it wasn't necessary. Good luck to you and keep us posted...Somehow it is strangely comforting knowing other folks are going through the same stuff.
Would like to see a couple of you that are having issues talk to your buddies who's sleds are running good and see if they will swap you ecm's on the hill just to try...mag(a friend) kept scuffing his(scuffed the 10 update in 50 miles)..finally polaris changed ecm, regulator, injectors..now his rips....would be worth the try..if it fixes it then you can go to the dealer and say..fix it....
aebsledder, "was under wifes login last time" I am not sure what all they did, they did adjust tps sensor, and something else. I will ask them monday and see if they remember. I got my 18 top gear in and tried a 64/40/46 helix and runs great will pull 8400 at 9500 feet. Will beat wifes 2010 summit x by a bit now
I do agree with aksnowrider and if you know someone that has sled running good change ecm with them. If your around stemboat area let me know and I will.
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aebsledder
Well-known member
Ecm
Same thing as the ECU? Unfortunately out of all the polaris's I ride with which include: 2 08 dragons, 1 09 RMK, 1 09 assault, the only one that runs decent is one of the 08 dragons, and he has a power commander. And when I say decent I mean pulling 8150-8200 on the trail.
Same thing as the ECU? Unfortunately out of all the polaris's I ride with which include: 2 08 dragons, 1 09 RMK, 1 09 assault, the only one that runs decent is one of the 08 dragons, and he has a power commander. And when I say decent I mean pulling 8150-8200 on the trail.
see if he will let you try his ecm..if nothing else it will confirm yours isnt working right..will try here in a bit to upload vid of mine today..basically it started the day at 8100 rpm and 44 mph track speed on a good steep deep run and by the end of the day it was at 8350 and 47 mph..this on a freshly updated motor..here is a vid of it on a decent hill..this is tims(the ultrarider) son spike on my sled..he gets a little cocky but it shows how good it runs...motor had about 15 miles on it when this was shot.....
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Video & clutching
AK really liked the video, is that a stock can ? Did not have good snow to ride on hear, froze clear to the top, did not get to try the clutching, have to wait for next week end. Maybe WINTER4EVER had a chance to try his? sounds like his set up is the same as mine.
HAVE A HAPPY NEW YEAR
AK really liked the video, is that a stock can ? Did not have good snow to ride on hear, froze clear to the top, did not get to try the clutching, have to wait for next week end. Maybe WINTER4EVER had a chance to try his? sounds like his set up is the same as mine.
HAVE A HAPPY NEW YEAR
Endo, that is a complete slp single with can, the other sled in the vid is an 03 vertical escape, slp race twins, race porting, slp heads on av gas, well clutched and geared with the 2.5 163 camo extreme am impressed mine ran that good...I am back to a wheelie problem..same settings as last season which would keep the ski's just skimming the snow on a climb is now trying to wheelie over backwards..will talk to curt and see what he thinks.....
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aebsledder
Well-known member
Wheelie Problem?
Isn't that like saying "Man, I wish my d*** wasn't so big". The only place I can get my sled to wheelie is if I pin it when I load it on my trailer. Cleaning my exhaust valves tonight, and going to switch back to stock 10-62's. I guess I will know if I have a clutching problem or not when I ride it this week. Plugs look pretty dark and I have a little oil puddle where the spark plugs seat on the cylinder head. So I am thinking it is probably running to much oil too. Might post some pics in another thread so I don't pollute this one with some of my non-clutching issues.
Isn't that like saying "Man, I wish my d*** wasn't so big".
The only place I can get my sled to wheelie is if I pin it when I load it on my trailer. Cleaning my exhaust valves tonight, and going to switch back to stock 10-62's. I guess I will know if I have a clutching problem or not when I ride it this week. Plugs look pretty dark and I have a little oil puddle where the spark plugs seat on the cylinder head. So I am thinking it is probably running to much oil too. Might post some pics in another thread so I don't pollute this one with some of my non-clutching issues.
Isn't that like saying "Man, I wish my d*** wasn't so big".
lol...on our ride up, the trail is pretty tight winds thru trees up and down but mostly up..came to a clearing popped across it and just as going into the trees again tim nails his(leading) so I nail mine..just about smacked a tree..wasnt expecting the frt to come up 3 ft...kind of mellowed out a little till we got up top...
Well Ive been in Mccall all weekend. I pulled the 2 grams out of the tip so I ended up with 68g and just 2 grams in the base. I also put 2 delrins under the sping cup. This is the best this sled has EVER ran, it pulled like a freight train. It pulled 8200 rpm all day long regardless of snow conditions or elevations changes. Im guessing I was between 6000 and 8000 feet most of the time. I cant wait to give my doo friends some serious fits now!
glad to hear it winter..nice to see guys like their sleds again..now you really want to give them fits....put a track under it..lol
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aebsledder
Well-known member
changed my weights
I changed back to stock weights from my 68gram MTX's. Sled seemed snappier and I was able to pull more consistent rpms, but I still was pulling about 8100 max. I do think I have some other problems for sure, but I posted those in another thread. Probably going to take it back to the dealer and see what they think.
I changed back to stock weights from my 68gram MTX's. Sled seemed snappier and I was able to pull more consistent rpms, but I still was pulling about 8100 max. I do think I have some other problems for sure, but I posted those in another thread. Probably going to take it back to the dealer and see what they think.
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theultrarider
Well-known member
see if he will let you try his ecm..if nothing else it will confirm yours isnt working right..will try here in a bit to upload vid of mine today..basically it started the day at 8100 rpm and 44 mph track speed on a good steep deep run and by the end of the day it was at 8350 and 47 mph..this on a freshly updated motor..here is a vid of it on a decent hill..this is tims(the ultrarider) son spike on my sled..he gets a little cocky but it shows how good it runs...motor had about 15 miles on it when this was shot.....
Yes, I rode AKSNOWRIDERS sled that day and I can tell you I wish I could get my clutching to work as well as his. That sled just flat out works way better than it should. What is truely amazing is that after many many pulls like these, his clutches are so cold they will harder even warm your cold hands up. I can't imagine ever getting a clutch setup better than what Mike has his running. I can still get him though
Clutching
09 D8 163,19/42,SLP single. Started with 2 gr belly 0 tip,68 mtx, blue/pink spring,stock secondary with 3 Delrin washers, at 6000 ft run 8000 rpm and 46 mph on the hill, then went with no rivets would run 8100 rpm on some pulls and 47 mph, but at lower elevations it was easy to run 8300 +
I did not like the way it ran below 4000 ft, some of the old mid range stumble cam back and made it hard to ride. Next I put 1gr tip, 2gr belly and down low it run great, pulled real hard would hit 8200 rpm. At 6500 to 8000 ft pulled 8050 rpm and 45 to 50 mph depending on the run. I like this set up better for around hear, as we start out around 1500 ft and ride for awhile be for getting to 5000 ft and up, I would like to see to 8200 rpm just not sure where to go from hear.
Ak would changing the helix to a 60/40/.36 help ?
09 D8 163,19/42,SLP single. Started with 2 gr belly 0 tip,68 mtx, blue/pink spring,stock secondary with 3 Delrin washers, at 6000 ft run 8000 rpm and 46 mph on the hill, then went with no rivets would run 8100 rpm on some pulls and 47 mph, but at lower elevations it was easy to run 8300 +
I did not like the way it ran below 4000 ft, some of the old mid range stumble cam back and made it hard to ride. Next I put 1gr tip, 2gr belly and down low it run great, pulled real hard would hit 8200 rpm. At 6500 to 8000 ft pulled 8050 rpm and 45 to 50 mph depending on the run. I like this set up better for around hear, as we start out around 1500 ft and ride for awhile be for getting to 5000 ft and up, I would like to see to 8200 rpm just not sure where to go from hear.
Ak would changing the helix to a 60/40/.36 help ?
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the shallower helix will help up high to get more rpm for sure..but it will over rpm down low..thats a big jump trying to get 8200 from 1500 ft up to 8000 ft....more then any one setup will do I think...you might have to pick which elevation you need it to run best at and live with it at others...you might try adding as much to the middle as you can..then remove tip weight(should make the mid pull harder and still get rpm up high)
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