KymcoForum.com
Scooters - 50cc => Super 8 => Topic started by: Chris0381 on June 28, 2014, 01:09:15 PM
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Where can I buy some jets for the 50cc 2T Super 8 ?
I'l like to try some higher jets like #85 etc. Also would consider Bettin's early mode carb if its not too expensive and painless to get working.
I just dont know the specs of the jets. A link t the exact jet would be nice.
Thanks
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Let B&L set you up w/ a few. Ebay has them/ Partsforscooters.com has them but I forget which ones. One of these guys will know.
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Let B&L set you up w/ a few. Ebay has them/ Partsforscooters.com has them but I forget which ones. One of these guys will know.
great thanks Zombie Would you know the specs offhand as I see so many different jets and they seem for specific carbs.
Do I have the Keihin 99101-116 carb? The specs only say 16mm Keihin.
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http://www.racingplanetusa.com/carburetor-main-keihin-p-700-1.html?utm_source=google&utm_medium=google_merchant_us&utm_campaign=google_products_us&gclid=CPCPmfKinr8CFbRj7AodZW0A_w#.U6-ZbG3bzl8 (http://www.racingplanetusa.com/carburetor-main-keihin-p-700-1.html?utm_source=google&utm_medium=google_merchant_us&utm_campaign=google_products_us&gclid=CPCPmfKinr8CFbRj7AodZW0A_w#.U6-ZbG3bzl8)
I THINK these are the right ones. 5mm
Let someone else verify this.
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OK TY Zombie
Bump!
Was going to buy the 7mm ones. Is just a bit ambiguous what jet to get but a phone call to racing planet tomorrow may solve that. I want to also try and remove the idle screw plug tomorrow and try some carb tuning. The last time I tuned a carb was on my Flintstone (hole in the floors) 76 Chevy Nova, dam its been a long time.
Also would like to buy a few exhaust and carb gaskets.
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It is real easy bro. You turn it about 1/2 turn at a time, and wait a few seconds for the result. When the idle starts going down got the other direction. Keep going till it starts to go down again. The goal is somewhere in between. You want the highest idle you can get. Once you have that turn 1/4 turn RICHER or Clockwise if the screw is near the carb. inlet or counter clockwise if the screw is near the carb outlet.
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49 reads, and NO ONE knows if the jets are 5mm ??
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They are the 5mm, same jet size as the 250 bikes take. That racing planet price is really good, I couldn't even mail them that cheap lol. I'll vouch for then though, been good dealings lately. The carb does not have gaskets anywhere all orings that only need replacement of it sits with gas. If everything else is stock a #86 jet works well, 500" and normally 65 degrees here. Also have a look at my exhaust derestrction post, worth doing.
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THANK YOU!
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Thanks Bettin.
I may be wrong but Im seeing M4's for the Super 8 50 2t
http://www.racingplanetusa.com/xanario_search.php?query=main+jets&sessID=0b67aee6ef13bb00507d42f23c783ee4&attrib (http://www.racingplanetusa.com/xanario_search.php?query=main+jets&sessID=0b67aee6ef13bb00507d42f23c783ee4&attrib)[cat][0]=Kymco_Super+8+50+2-Takt
Do the 2T's and 4T's still share the same jets ?
Still considering your early model carb mod in the future.
Zombie looking forward to removing that plus, looks easy enough with the carb on the bike. I'll contact racing planet.
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Hmm I'll have to double check, my 250s cash had the same size main jet as the 2t but most gy6 based bikes have larger jets. And yes I just checked my jets in the tool box, small size is 4mm so that's what you should order. Sorry for misinformation earlier!
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Hmm I'll have to double check, my 250s cash had the same size main jet as the 2t but most gy6 based bikes have larger jets. And yes I just checked my jets in the tool box, small size is 4mm so that's what you should order. Sorry for misinformation earlier!
NP Bettin
I must apologize fr not using the drop down model selection menu. I stopped using the menus as all other sites only list the 4T if any. I ordered them this morning with an exhaust gasket. Was gonna do a carb oring but they had 2 different listed wasnt sure which to get.
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It's fine, I've taken thousands of those carbs off and never have had to replace the the o-rings.
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Well I did the carb mod but the dremel made a very wide v shaped slot, can still turn the needle though with a small screwdriver.
Just want to ask if turning it out (counter clockwise) is rich and turning it clockwise is lean. I didn't note any performance gain but I'm sure carb tuning is more about steady efficient performance and keeping the engine running good with least amount of damage.
I may have it slightly on the rich side (counterclockwise) just to be safe from being too lean. The increase in RPM's from hitting the sweet spots seems to be very slight from its over lean or over rich position. I guess a tachometer is really needed to be exactly spot on.
Are my assumptions correct ?
Thanks.
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Left lean, right rich. It's an air screw so imagine closing it, clockwise, turns off the air, which is richer. You want to be in the 3\4 - 1 turn out range.
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Left lean, right rich. It's an air screw so imagine closing it, clockwise, turns off the air, which is richer. You want to be in the 3\4 - 1 turn out range.
OK Thanks
I'll reset is the other way. Need to fabricate a special screw driver that a thicker than the one I have.
How frequently does one re-soak the airfilter and what oil is best to use to soak it ?
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Honestly, unless you ride on dirt or gravel toss I would squeeze all that oil out and run it dry. Better air flow.
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Honestly, unless you ride on dirt or gravel toss I would squeeze all that oil out and run it dry. Better air flow.
Thanks again Betting. Got a nice bit that turns the carb air screw much easier now.
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how should you adjust the other screw?
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how should you adjust the other screw?
Good question as I see no mention of the other screws.
I dont think anyone does adjust the other screws.
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The other screw meaning Idle screw? There is no "setting" for this like there is with the Air screw, just set the air screw correctly and then adjust the idle to where it sounds good, and the wheel is not spinning when idling.
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wont the air screw setting depend on the setting of the other scew?
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wont the air screw setting depend on the setting of the other scew?
It shouldn't. The idle screw just changes how much default throttle there is when idling. It doesn't really affect the air/fuel mix.
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I take it the idle screw just adjusts default tension on the throttle cable ?
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I take it the idle screw just adjusts default tension on the throttle cable ?
It actually adjusts the throttle lever on the carb by slight amounts. The tension in the throttle cable is adjusted by adjuster nuts on the cable itself.
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It actually adjusts the throttle lever on the carb by slight amounts. The tension in the throttle cable is adjusted by adjuster nuts on the cable itself.
So I am guessing you want to adjust the air mixture with no tension on what controls the throttle to its best setting, and then increase throttle via the other screw if the idle is too low ?
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Can someone post pictures about how to install a new jet?
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Can someone post pictures about how to install a new jet?
How to change out your main jet and pilot jet on a GY6 carburetor from a 150cc go kart. (http://www.youtube.com/watch?v=baNDtRZHJHA#)
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Pilot Air/Fuel Screw Adjustment Explained (http://www.youtube.com/watch?v=zm5mB3R8Ucw#ws)
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Good video Zombie.
I notice when I turn the air mixture screw in all the way, the bike still idles and doesnt easily cut out. Would that suggest an upjet is still a good decision? I have 86 and 90 jets on the way from racingplanet and have the 82 in at the moment.
Would like to also fond a bigger air tube like someone found on an earlier thread.
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The main jet is not the one controlled by that screw. The Pilot jet is. Just to be 100% certain... Which side of the carb is your Mix screw on?
If it is on the air box side it is an Air screw, and turning it in w/ little to no effect indicates your jet is too small OR you have an air leak either in/on the carb or the intake track. Perhaps even the crank seals.
OR someone along the line has either swapped out the jet or you have a clogged up idle circuit.
The easiest way to be sure a carb is clean is to soak it in Chem Dip for 24-48 hours. EVERY piece of the carb has to be taken apart before soaking to be certain the chemical can get into everything. Rubber gloves are a MUST have cause this stuff stinks, and the smell will last for days in your skin.
If that does not correct the issue you may just need a larger Pilot jet. Also if you intend to swap to a free flow air filter you will need a larger pilot jet anyway. Generally speaking 1-2 steps up is enough.
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50 2t takes the m4 jet
http://www (http://www). partsforscooters .com/114-49-QMB139-Main-Jet-Kit
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wrong, the keihin PB 16 uses the 99101-116 jet
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wrong, the keihin PB 16 uses the 99101-116 jet
I thought the S8 50 2T takes the M4 jet not the M5 jet.
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says here m5
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hey guys, i ordered a 70cc big bore and a variator from louie at spi. I need to get the jets as well. He said :"Most people usually just need to change the main jet to an 85"
zombie, should i change the pilot and main jet, or just the main jet?
is it 5mm? anyone got a link to where i can purchase the right one for my 2012 kymco super 8 50cc, 2 stroke?
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hey guys, i ordered a 70cc big bore and a variator from louie at spi. I need to get the jets as well. He said :"Most people usually just need to change the main jet to an 85"
zombie, should i change the pilot and main jet, or just the main jet?
is it 5mm? anyone got a link to where i can purchase the right one for my 2012 kymco super 8 50cc, 2 stroke?
I agree, Ive read just about every post on this forum and I dont see any or much mention of changing the pilot jet. Are we talking a 5mm pilot jet or 5mm main jet.
This is what I ordered and it say for the Super 8 50 2t in the application list :
http://www.racingplanetusa.com/carburetor-main-keihin-p-724-1.html?sessID=0b67aee6ef13bb00507d42f23c783ee4#.U79Ff7Q0WSo (http://www.racingplanetusa.com/carburetor-main-keihin-p-724-1.html?sessID=0b67aee6ef13bb00507d42f23c783ee4#.U79Ff7Q0WSo)
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Hi chris, it looks like we're in the same boat. we have the same bike. 8)
does it fit? I'm confused about the 5m and 4m, which is it?
Also, when I check out it says " Item located in the european warehouse, delivery time 6-8 days"
Anyone know where I could get it from a USA supplier?
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Hi chris, it looks like we're in the same boat. we have the same bike. 8)
does it fit? I'm confused about the 5m and 4m, which is it?
Also, when I check out it says " Item located in the european warehouse, delivery time 6-8 days"
Anyone know where I could get it from a USA supplier?
Its been 12 days since I have ordered the jets from racing planet, they had to get them from their European warehouse so they have not arrived yet. I'm hoping to get them soon and I'll definitely let you know ASAP if they at least fit then if they work. All other mods involving variator tuning are on hold and I'll just go with this jet change for now. I have only 3 1/2 months till the scooter goes into storage and may just get a variator performance kit next year instead of messing with springs and rollers.The bike is doing what it needs to do and is quite fun.
I'll keep you informed and we will be able to have closure on this thread hopefully soon. I assume their 6-8 day delivery is business days not actual days.
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ok, I'm thinking of going with this one,
http://www.rockymountainatvmc.com/p/930/25594/Keihin-99101-116-Series-Main-Jet?term=keihin%20m4 (http://www.rockymountainatvmc.com/p/930/25594/Keihin-99101-116-Series-Main-Jet?term=keihin%20m4)
can someone confirm if it's the right one?
ps. how many miles do you have on your scoot and how do you like it so far? I've got 900miles on mine, haven't been serviced yet, so i far I love the thing!
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ok, I'm thinking of going with this one,
http://www.rockymountainatvmc.com/p/930/25594/Keihin-99101-116-Series-Main-Jet?term=keihin%20m4 (http://www.rockymountainatvmc.com/p/930/25594/Keihin-99101-116-Series-Main-Jet?term=keihin%20m4)
can someone confirm if it's the right one?
ps. how many miles do you have on your scoot and how do you like it so far? I've got 900miles on mine, haven't been serviced yet, so i far I love the thing!
Bump!! When they talk about the MM sizing, is it the head diameter or the thread length ? You could put a spin on it and say its either a 5mm or 4mm with that detailed part. I come from a mechanical design/drafting background so I do get over technical at times.
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I don't know, but according to this thread http://www.kymcoforum.com/index.php?topic=3334.0 (http://www.kymcoforum.com/index.php?topic=3334.0) the jet I'm looking at on the site is the right one, so i'm going to order it right now.
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I don't know, but according to this thread http://www.kymcoforum.com/index.php?topic=3334.0 (http://www.kymcoforum.com/index.php?topic=3334.0) the jet I'm looking at on the site is the right one, so i'm going to order it right now.
Good luck with that jet and let us know how it works. What I am reading is the M4 or M5 are the thread sizes and I see both listed for our brand of carb. But racing planet my have mistakenly listed the M4 for the Kymco Super 8 2t.
Looking at the bottom of this link http://www.euroscooterparts.co.uk/find-your-scooter/kymco/naraku-m4-main-jet-pack-sizes-80-98.html (http://www.euroscooterparts.co.uk/find-your-scooter/kymco/naraku-m4-main-jet-pack-sizes-80-98.html) says the M4 isnt suitable for the Super 8. I just sent racing planet an email to verify that they had mistake of their pull down menu then.
May as well repurchase a jet from someplace else and have a spare to give to someone once racing planet corrects the order that I hope they will.
I am about ready to go out and by a tap and die set and buy a piece of brass.
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The size they refer to is actually the head size on the jet, and not the thread size.
Here's the kit you want. One jet is useless. You need to try several starting w/ the richest, and work toward lean.
http://www.ebay.com/itm/Carburetor-Main-Jet-Kit-for-Keihin-16mm-18mm-20mm-Carbs-Free-Shipping-/301140602616 (http://www.ebay.com/itm/Carburetor-Main-Jet-Kit-for-Keihin-16mm-18mm-20mm-Carbs-Free-Shipping-/301140602616)
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The size they refer to is actually the head size on the jet, and not the thread size.
Here's the kit you want. One jet is useless. You need to try several starting w/ the richest, and work toward lean.
http://www.ebay.com/itm/Carburetor-Main-Jet-Kit-for-Keihin-16mm-18mm-20mm-Carbs-Free-Shipping-/301140602616 (http://www.ebay.com/itm/Carburetor-Main-Jet-Kit-for-Keihin-16mm-18mm-20mm-Carbs-Free-Shipping-/301140602616)
Why not give that a try, thanks again for the time spent helping Zombie.
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No problem.
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http://www.pjmotorsports.com/keihin-jets.html (http://www.pjmotorsports.com/keihin-jets.html) Scroll down to the 99101-116 jet and look at the carbs it is used in. the 2012 Kymco super 8 2T houses the PB 16 which this jet is good in
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http://www.pjmotorsports.com/keihin-jets.html (http://www.pjmotorsports.com/keihin-jets.html) Scroll down to the 99101-116 jet and look at the carbs it is used in. the 2012 Kymco super 8 2T houses the PB 16 which this jet is good in
You're adding another place to get jets ?. Looks good if you just want one or 2. This should help others in the future.
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Maybe a "sticky" for vendors? Broken down into subs? Something all of us could edit/delete nonsense posts?
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I with you on that. Not easy having to go with 5 diff vendors for 5 diff parts. Im sure you have been there and done that.
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When I figured all the vendors I have in my bike the UN Pales in comparison. I did my part for improving Global Economy.
It's just part of the game for us in the U.S.. No getting around it.