Did some new mods, got a couple questions.

[IF900RMK]

I just got done doing a few things to my sled, I installed a MM 8" big wheel kit and freedom axle, removed all but the front boggie wheels; I also re-geared to 19/42, installed the billet chain case cover(way sweet), I also took the clutches off and had the primary balanced and a different spring installed and in the secondary installed the #420719 team helix. I put on a set of powder pro skis, and I also yanked the radiator and cleaned my exhaust valves and installed new gaskets and bellows. Everything went good and I took the sled out tonight to see how it ran; it runs great I am way happy with everything I did especially the gearing and clutching. But my two questions are when my track moves those clips between the windows click on the end of the rail as the track rolls past. I tensioned the track as the manual states and then I even let it go loose and tightened it more and no matter what, I get that clicking sound, is this normal with a big wheel kit? My next question is I refilled the coolant and then put the nose of the sled on the trailer ramp and filled it a little more and ran it for a while. While the sled sits there and idles the temp creeps up pretty fast, after about five minutes of idle time it is around 190 degrees, if I get on the sled at that point and run it out in the powder it drops within 30 seconds or so back down to about 135-140. Is this normal? I should of did a before and after comparison on the temps with the radiator installed and then pulled, but I didn't So what do you think do I still have some air in there or does that sound normal?

 

[ghostwhite]

I would say air is the culprit on the temps, with or without wouldn't matter much idling. I have the same setup in the back as you and mine did that till I got new hyfax that I cut longer and angled it at the end, the wheel kit does alter the tracks path closer to the rail ends. The clips rubbing on the actual rail metal could be bad after a little bit.

 

[900HO]

if its rubbing or clickn on the plastic hyfax which is usually the cause then u gotta undo the front screw and slide them out and cut sum off. it wont hurt if ur slider ends up being 3-4 inches shorter than the rail its ok. and u could have a bit of air in the coolant but 5 mins of idling on a 2 stroke is a fair bit. if it comes down fast after u start driving it then id say it just got hot cause it was sitting.

 

[HUNDO]

When it gets warm, check both running board coolers to make sure they are the same temperature. If they are, the coolant is circulating properly. I've found that while you have it up on the ramp, if you compress and relax the rear suspension quickly, it helps to get the air bubbles moving.

As for the clicking, how close are the ends of your rails to the track? I'm running 8s on a stock axle with a looser than stock track and new hifaxes and though it is close, the track doesn't contact the rails. You may want to tighten it up a bit more if you can.

 

[IF900RMK]

As for the clicking, how close are the ends of your rails to the track? I'm running 8s on a stock axle with a looser than stock track and new hifaxes and though it is close, the track doesn't contact the rails. You may want to tighten it up a bit more if you can.

The end of the rails and the track are really close less than and eighth of an inch, I will double check but I am pretty sure the clips are hitting on the rail and not the hyfax. I tightened the track to factory spec and then went a little more just to see if the clicking would stop but it was way to tight cause as soon as you let of the gas the track would come to a dead stop about three seconds later. I am not sure what to do maybe the longer hyfax Idea stated above will work.

oh ya- and both rails are the same temp, so the coolant is circulating.

 

[900HO]

im running 8 in billet wheels on stock axle but to the inside and stock rails and i have my track loose enuff that it almost slips and i still have a bit or room between track and rail.

 

[rmk2112]

Here's a good post regarding the temp issue.

http://www.snowestonline.com/forum/showthread.php?t=192714

 

[05900]

Not that you did... but it is possible to install axle 180 out,usually cut hifax at an angle and they may click until worn.
Ck rail clearance??

 

[IF900RMK]

Took the sled out today and it ran great!! I was very happy with all the mods I did, I also did a set of better boards and man what a difference it was having those on the machine. The temp issue seemed to be none existent out riding, I let it warm up to about 130 and then we took off and it ran around 138 down the trails and down around 119-123 when I was out in the powder, which is much cooler than it used to run on the trails. As far as the clips clicking they are hitting the very end of the rail just barely, I am going to take the axle of this week and double check everything again, and maybe call mountain machines about it. I will keep you posted on what I find out there, thanks for all the help guys to keep this 900 running strong!!