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Post by cypher1982 on Aug 1, 2020 20:32:21 GMT -5
Can you send some pics of the way you're hooking this up? Are you referring to the air scoop and stacks? I can once I get it jetted for its current setup, thats the only way I'll know for sure if its an actual gain in airflow. As far as other tuning concerns, I've done multiple measurements on my adjustable gy6 needle, and compared it to the stock one, based on stock settings, I'm very excited to say the adjustable will work in the stock diaphragm because the replacement diaphragm piston isn't long enough, the tunability of it all in the midrange is something I'm very looking forward to |
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Post by bullybike on Aug 2, 2020 19:55:35 GMT -5
way lean Danger Will Robinson I guess it's just gonna depend if I keep the intake setup like this, or use my air scoop I 3d printed lol.  Mad cool! |
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Post by bullybike on Aug 2, 2020 20:01:36 GMT -5
p.s. adjusting the needle alot does not really do much IME because the slider only really is varying a short time between idle and wot. Mostly it affects WOT as less needle restriction full up.
On the other hand, These engines are EXTREMELY sensitive to airflow, intake manifold length, port matching,, and having a bell mouth and airram will greatly influence performance if tuned correctly!
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Post by cypher1982 on Aug 4, 2020 9:49:20 GMT -5
So today I got my jets but of course there's rain. So I figured I'd work on the carb. Went back over it and checked pretty much everything. Here's a bit of what I found.  Stock kym needle on left. Gy6 adjustable on right  Kym piston on left. Gy6 on right. Gy6 won't work...too short  Kim needle sticking out of piston  Gy6 needle in kym piston, middle needle clip  Plenty of room left with the gy6 needle for any adjustments needed  Found float slightly high, so leveled it  Gy6 piston way to short to use  105 jet on left, my old mj drilled to 90 on right I'm definitely excited to see how she does once the rain dries up |
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Post by cypher1982 on Aug 4, 2020 9:54:51 GMT -5
Forgot one left thing. Found the needles were not sitting straight in the kym piston, off by a few degrees. So I found a tool to trim off the high spots and now the needle sits happily straight
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Post by cypher1982 on Aug 4, 2020 10:13:18 GMT -5
Also I measured the needles before putting them in. Every 5 mm I took a measurement from the top, and from the highest needle position. They are very comparable till the bottom 10 mm when the gy6 thins down a lot more
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Post by cypher1982 on Aug 4, 2020 11:09:36 GMT -5
 105 jet... same exact testing as before... |
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Post by cypher1982 on Aug 4, 2020 11:46:49 GMT -5
 115 chop... definitely around 110 should be the sweet spot |
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Post by cypher1982 on Aug 4, 2020 12:20:30 GMT -5
 110 chop... guess I'm stuck with 115... since I don't have like a 112. Does it normally change that drastically?? |
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Post by jackrides on Aug 5, 2020 14:29:40 GMT -5
Did both plugs have equal miles on them since new or last really good plug cleaning? That seems to be a really big difference.
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Post by cypher1982 on Aug 5, 2020 14:32:49 GMT -5
Did both plugs have equal miles on them since new or last really good plug cleaning? That seems to be a really big difference. Both were new, same road, same day only a few minutes apart. I still have the one from the 110 that I can run it again. Just to be sure after we hit the kill switch we need to stop asap while holding the throttle wide open right? Thats how I was doing it |
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Post by cypher1982 on Aug 5, 2020 21:35:53 GMT -5
Well on my ride home with the 110 jet I hit 39mph verified, up a very slight hill... doesn't seem so bad
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Post by jackrides on Aug 6, 2020 11:33:25 GMT -5
The most important thing about killing eng. for a plug read is to always do it the same. After that, If the throttle stays open plug will be wetter, closed it will be drier. Anybody got thoughts on this?
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Post by Steve B on Aug 7, 2020 21:24:24 GMT -5
Can you send some pics of the way you're hooking this up? Are you referring to the air scoop and stacks? I can once I get it jetted for its current setup, thats the only way I'll know for sure if its an actual gain in airflow. As far as other tuning concerns, I've done multiple measurements on my adjustable gy6 needle, and compared it to the stock one, based on stock settings, I'm very excited to say the adjustable will work in the stock diaphragm because the replacement diaphragm piston isn't long enough, the tunability of it all in the midrange is something I'm very looking forward to I am referring to how you are going to connect all the 3D printed pieces. I was wondering if you can send photos of all the hoses you intend on using, perhaps a mock up photo with all pieces included and explain how each one is going to work. I find this project very interesting. |
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Post by cypher1982 on Aug 10, 2020 11:07:22 GMT -5
3 mile long qot plug chop...good to still lean?   |
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