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#1 |
Join Date: Jun 2017
Posts: 3
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new qlink xf200!
Hey guys! Just bought a qlink in fair shape for $500! It runs and drives, has a few upgrades like a rear sprocket and a fabbed exhaust i made. I was wondering if anyone could point me in the right direction for carb jetting, and or tunning thr stock to run really rich. Also has anyone swapped hand controls? Mine seem to slip off haha.. So many questions! Im very tall as well and was wondering if anyone has found a rear shock/spring thats stiffer and maybe could raise the ride hight a lot more in the rear? I plan on getting a more dense oil for the fronts since they seem to be soft as a pillow. Any secrets to gain more power or things i should know? Sorry if im that annoying guy!
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#3 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,098
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There really is no end all-be all guide to tuning a carburetor. Too many variables come into play for any of us to say "run this primary, this main, this needle" and it working the best for your bike. If it's too rich, the first question is, where is it too rich at? Too rich at idle? Too rich at WOT? Too rich in the half-throttle range? Those questions will determine which jet to look at first.
If it's just too rich all around, then the best way to do this is to start with the main jet. Put a fresh plug in and find a place you can run at WOT for a decent run and kill the ignition and pull in the clutch at the same time and come to a stop, pull the plug and see what it looks like. Based on the condition of the plug, you can make a judement on what direction to go up or down. If it is just lightly sooty, then a single step down (Say a 110 jet to a 105 jet) will probably be enough. I just find it rather unusual that this carb would be tuned too rich. Generally all of these honda clone powered bikes come very leanly jetted from the factory.
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#4 |
Join Date: May 2006
Location: Yuma, Arizona
Posts: 9,043
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There are a couple XF/XP 200 guys around here; 2LZ is one that comes to mind--these guys can sort out your carb Nice bike, by the way!
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"They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard |
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#5 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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Quote:
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#6 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,098
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This is an excellent point too. Thanks for catching that.
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#7 |
Join Date: Mar 2008
Posts: 2,436
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Dirty air filter (Stock looks as https://item.taobao.com/item.htm?id=520275045135 ) also had this
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#8 | |
Join Date: Feb 2009
Location: Michigan
Posts: 1,040
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Quote:
Supermotarded, you'll have to remove the bowl to check the size of the jet. It's super easy on these carbs (if it's a CV). Turn off the fuel and either run the bowl dry or drain it. Remove the nut and lock washer on the throttle wheel and pull off the assembly. Loosen the clamps at the airbox and the head and rotate the bottom of the carb toward you. Take off the bowl to access the jet being careful not strip out the screws. Let us know what size it says and where you are located. Different jets are needed at different elevations.
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2012 Kawasaki Versys 1984 Honda Magna V65 2016 Rhino 250 2016 Tao Tao 125D |
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#9 |
Join Date: Mar 2008
Posts: 2,436
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![]() === [Repair manual] Haynes ISBN:9780857337504 English: http://pan.baidu.com/s/1sjqfYlZ | Brazilian Portuguese:http://www.mychinamoto.com/downloads...Portuguese.pdf [Parts manual] http://www.puzey.co.za/spares/Puzey%...sCatalogue.pdf
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Last edited by humanbeing; 07-03-2017 at 05:07 PM. |
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#10 |
Join Date: Jun 2017
Posts: 3
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Thanks for all the info guys! Since i posted this i played with the carb slightly and read some tunning info which i found very helpful... Posted here -> ( http://www.factorypro.com/tech_tunin...m_engines.html ) so after reading all this and riding the bike up and down the alley and some good 1-3 WOT rips, it seems to bog or be super flat on power in lower rpm. But it cooks pretty good in high rpm almost to 10,000rpm actually (accidentally achived) so it said. So i think i need to adjust the float bowl to allow more fuel at lower rpm. Also investing in a bigger jet more than likely since it has a 44t rear spricket and k made a custom slip on exhaust and air cleaner which im sure is leaning it out..
On another note i found world of powersports will replace my fork oil with a heavy weight oil for $75 which seems decent considering the pain of diy-ing it in my driveway. I also plan on replacing the rear shock with something more stiff to give me a little bit more seat hight, i am also searching for a seat to replace mine if anyone knows any seats that may fit with modification? (I am 6'7" so im trying not to look goofy on it)..latest pic of the bike! Thanks again!! |
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#11 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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Quote:
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#12 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,098
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The only trick to tuning CV carbs that makes them a bit different from traditional slide carbs is the introduction of air jet(s) into the mix. Mikuni CV carbs are a little alien to me, but the same basic principles apply. I highly suggest doing some good reading on CV carb tuning, specifically as much as you can on the Mikuni CV carbs, as you can before getting too far into just making adjustments. CV carbs can be a pain to get dialed in sometimes, which is why many people simply switch to a standard slide carb when doing performance builds. They behave very differently under certain operating conditions, like the case with my 4 Keihin CV carbs on my Goldwing with a grand total of 6 jets a piece. Including Primary, Secondary, idle air jet, main air jet, Needle Jet, and pilot fuel jet with a main fuel bypass throw into the mix for fun. These are far more complicated than the Mikuni you have, but they operate on the same basic principles.
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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#13 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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I have the jetting info at home that I run in Q. I'll post it later.
The idle mixture screw points straight down on the top. When you have the carb spun, check its adjustment. Leave the float bowl at it's normal, stock setting. Raising it will only cause flooding, bogging and overflowing on the ground. Picture letting your toilet fill too high. Find the float specs. Usually it's remove bowl, flip the carb upside down and the float should be level with the carb housing.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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Tags |
parts, performance, qlink, supermoto, xf200 |
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