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8/5/2018
Location
LS
CycleC
8/5/2018 11:04pm
8/5/2018 11:04pm
Edited Date/Time
12/18/2020 1:55pm
Hi all, does anyone on here own a 2019 Husky TC 85 - I am having an issue with exhaust spooge, Im at 5200 ft running 42 pilot, NRKC Needle (2nd pos) and a 138 main jet, all this is on the lean side but still a lot of unburned fuel is coming out the silencer. My son is an above average rider so is not just putting around, the 65's we run are perfect with zero spooge. Is this a common problem on these bikes as Im not sure where to look now. I know its not a crank seal. Im stumped ?? - Any help would be apreciated
Thanks
Thanks
The Shop
145 Main- Im on a 138
Pilot 45 - Im on a 42
Needle 3 pos Im on 2nd Pos
So Im lean all round, yes i will do a plug chop and see results, Im running recommended jetting for 7000ft already
The recommended jetting could be wrong. How many turns out is your air screw? If its not ~1.5 turns out your pilot is off.
Jetting - Sea level- 1000'
142 Main
Leaner needle supplied - middle (3rd) clip
45 Pilot
Air screw 1 1/2
Honda HP2 at 32/1
Red PV spring set flush.
Silencer stays clean & bike runs excellent. Squish is massive from factory so will set on first piston here soon.
Almost any 2-stroke can have hesitation when whacking throttle wide open on stand at times. Even if jetted perfectly. We are racing tonight I will see how it responds. I do know they can benefit from tighter squish/higher comp than what is set at factory. I am going to try and find time to throw a piston in ours this weekend. He hasn't complained but not having it all dialed drives me nuts........
The jetting i'm using is
138 Main
Pilot 42
Needle 2nd Pos
Thanks for your input
I would have bet it was 60:1 using a full synthetic oil. This will have a big effect on the jetting.
Paw Paw
Current Setup (untested, waiting on a plug)
142 Main (stock)
Leaner needle supplied - middle (3rd) clip
45 Pilot
Air screw 1 1/2
Make sure the white connector for "easy mode" isn't disconnected I actually recommend hard wiring this as we had an issue with that connector.
I suggest running a full synthetic oil in these bikes as it keeps the powervalve from gumming up. we have no exhaust spooge ever and also don;t foul plugs. That said, my kid rides pretty aggressively. Most likely it's a combo of oil and easy riding. Don't be afraid of raising the clip on either it seems to make a big difference on these bikes.
For break in just ride it like normal. I just did a complete bottom and top end on our '18 105 and as per our usual a do one warm up to make sure everything sounds good then it's ride it like you race it. I have done this one more bikes than I can count and our pistons look great and the bikes run hard. You get better initial ring seal that heat cycles/gent rides...... even brand new of showroom floor.
Follow up from my older post - I have been running .028-.030" on squish which requires thinner base gaskets or head cut. Base gaskets are simple and I haven't noticed an ill effects from using them on these bikes. Factory is set at .036"+ on every one I have rebuilt....
Pit Row
I will drain the fuel mixture tonight and mix up some Maxima K2 full synthetic. I'll see how it runs on the current setup before raising the clip to the 2nd position. I was not even aware of the issue with the white connector so I will keep an eye on it. If I have to I will hard wire it as well.
At this point I just want to get it dialed in with no spooge or any more fouled plugs. He can barely touch the ground on it and has to get a running start to get on it and started by himself.
Again, thanks for the help!!
Book
Air screw - 2 turns
Idle jet 48
Stock needle 3rd clip
Main jet 145
Plug ngk 9
Our settings
Air screw - 2 turns
Idle jet 45
Lean needle 3rd clip
Main jet 142
Plug ngk 8
We’re currently riding a fairly tight track and I’m still getting more spooge than I’d like. And loading up on idle and bottom. Where do I go next? Leaner main jet or idle jet? Both? Thanks guys!
Opened up airbox
Red PV spring flush with case
Aggressive rider @ sea level. Never had spooge at all & bike runs strong. Needle makes biggest difference, IMO...
Hard wire the white "soft power" plug asap also. I've seen a bad connection there cause all kinds of weird issues.......
Everything sounds great until between 1/2 and 3/4 throttle. Bogs a little bit at that then picks back up. I ordered a lower size Main jet, but I’m going to mess with my air screw tonight and see if that does anything. Haven’t tried 1/2 turn out.
Also I run 927 castor and 32:1 ratio. And I’m not “on it” all the time when riding it which I probably need to work on.
I have a friend who advised me to not use synthetic 2 stroke oil. I think he said it’s not good for the older 2 stroke or something lol. Not sure why he would say that. Can I go between synthetic and non synthetic when I want to?
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