KymcoForum.com
Scooters - 50cc => People 50 => Topic started by: cygnusx8 on March 06, 2010, 07:34:52 PM
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I'm looking for a set of jets and/or performance carb for my 2002 People 50. Where can I get them? Thanks.
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Just curious , my 2001 stock people 50 will go past the 80 kph limit on the speedometer , how fast does yours go now ? Thanks .
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Don't know exactly. It's not 100% just yet. Just installed a new reed valve but may have to mess with jetting as I have a brand new stock carb with Technigas exhaust. It runs well but have issues idling. Will let you know the top speed once I get it running well which would be faster if you point me to the right website :)
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Which model carb. do you have? W/ the technigas pipe you will need to go up a few sizes on the main, and adjust the idle mix screw a little richer. There are LOTS of aftermarket carbs, but 99% of the time the stock works just as well w/ the correct jets. I have posted before it is just as easy to use torch tip cleaners to open the stock jets. Saves a few bucks, and a lot of time. Micro drills will also do the job.
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Ideally I would prefer to keep the stock carb and just swap the jets since it's a new carb and I don't really want to spend more money on a performance carb. Did you post instructions on this forum?
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You need to figure out which carb you have. There should be a name on it, something like Keihin. You may want to pull out your current main jet also and see what size it is. The size should be printed on the side of the jet. That will also give you a good visual of exactly what jet you are looking for.
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Here's one of the posts takling about opening the jets. Use keywords in the search on the top right, and there are years w/ of posts to pick thru. You will need the thread size also when /if you order jets. Post what you have, and someone here will give you a good source
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how many sizes is it safe to go up on the jets? i'm going to get some torch tip cleaners today. i was wondering if i just went up one size would it make any difference. or should i go 2 sizes?
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Up-jetting will only make you run rich if you don't change the air filter or exhaust! You won't get any performance increase actually the opposite by just increasing the main jet size.
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My Bad ! Here's the thread... http://kymcoforum.com/index.php?topic=1140.msg7047#msg7047 (http://kymcoforum.com/index.php?topic=1140.msg7047#msg7047)
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i looked at that thread and i'm sorry if i missed something but i dont see how much is safe to open it up. i just ordered a pipe so i'm pretty sure i'll have to play with the carb. i'm trying to join the fast 50cc club! help me out! might even go 70cc!!!! i like playing with these scooters. and buyin a fast 150 just takes the fun out of it.
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I gave up on trying to "open up" the jets myself after I broke the bit off in my pilot jet. I pretty much have a full set of jets at this point! I would say if you're going to drill the jet out, only go one size up at a time. Just find the bit that fits in the jet and go to the next size up. I just gave up on messing with them and ordered some from Provoscooter. For me tuning is enough of a headache without trying to add in additional errors! Thus, the reason why I'm not at work right now! Torrential rain yesterday apparently got water in my engine! It's all good now, but took me 3 hrs this morning pulling everything apart!
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What he said! Torch tip cleaners are easier for me. They don't break. Just go 1 size at a time until you get a good clean run, and check the plug. There will be a point where it will sound good but most likely still be lean so be CAREFULL, and go 1 step over that. Put your pipe on, and open the jet 1 size/adjust the idle mix slightly on the rich side, and test run.
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torch tip cleaners work and are easy to use. thanks zombie. i went up one size, would it be safe to go up one more? i'm not getting anymore top end from the pipe. i saw on another post 5 on the main and 1-2 on the pilot. i'm gonna try it and let u know
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i looked at that thread and i'm sorry if i missed something but i dont see how much is safe to open it up. i just ordered a pipe so i'm pretty sure i'll have to play with the carb. i'm trying to join the fast 50cc club! help me out! might even go 70cc!!!! i like playing with these scooters. and buyin a fast 150 just takes the fun out of it.
..preach it brother!!!
..can I get an "amen"?
;D
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amen!!! now can i get some more help!!! lol. all i need is top end. i haven't opened the jets anymore yet. just that one size. waitin for an op. will a new air filter help?
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..do you still have the stock air filter on your scoot?
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im afraid so
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...then, yes!!..a free-flow air filter will surely help overall performance..
..it will also magnify a lean mixture condition..which it sounds like you might have...
..i'd suggest opening that main jet some more...
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It's no problem to keep opening the jet. If you go too far a drop of solder will close it back up. then you can go back to where it worked well for you. Which pipe did you get? Have you looked at the plug after a quick (60second or so) run? You will want an even coffee/tan color too the plug. Darker is better for the most part. You won't see tooo much gain untill you also open up or replace the air box. the pipe will get it all out, and you need to get it in first. You should however see a few mph at the top, and a bit more pull getting there once you get the jet nailed down. It's a bit of trial, and error for now.
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To really get the full potential out of the pipe you need to open up the air filter. That is your main point of restriction now! I have a Techingas on my Vento with the stock airbox and no re-jetting. I can't really speak from experience, it didn't have any exhaust before, but it's definitely not a screamer like my ZX! I also haven't done any plug chops on it either, so just the pipe may require a larger jet. I haven't had much time to work it. Dre, at this point you probably need to do a plug chop and see where your mix at. If you plan on getting an air filter, now is the time to do it to save a little time on tuning. With the air filter you will have to re-jet again and more plug chops. The key is not to run lean!
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tecnigas next r. how do i open up the stock air filter? i can safely go up one more jet size? im the worst with solder
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You need to ditch the stock air box and run a straight K&N type filter. Not sure if you can "safely" go up one more jet size. That's where the plug chop comes in!
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..if you've only went up one size so far, i'd bet you could go a nother
..what my 2T fwends think about that??
..i'm listening because i'm contemplating that spiffy technigas pipe......................
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You need to ditch the stock air box and run a straight K&N type filter. Not sure if you can "safely" go up one more jet size. That's where the plug chop comes in!
where did u get the air filter in your avitar? i want one like that ;D
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should i wait til after i get the air filter before i open up the main jet one more size? or will i have to open it up at least 1 moer anyway?
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Well if dre is running an 80ish jet stock, each tip cleaner is approx +2. I would say to get around 87-92 for just the pipe. Don't use the math I just put down cause I have no way of knowing how your cleaners run sizes, but the "goal #'s " should be correct.
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I ordered it from K&N directly through their website. It was only like $25 w/ shipping. If you go on their website and look under universal filters they have all the dimensions. You just need to measure your carb flange and see how much available clearance you have around it.
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Well if dre is running an 80ish jet stock, each tip cleaner is approx +2. I would say to get around 87-92 for just the pipe. Don't use the math I just put down cause I have no way of knowing how your cleaners run sizes, but the "goal #'s " should be correct.
[/quote
so 1 more size should be ok then right?
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I ordered it from K&N directly through their website. It was only like $25 w/ shipping. If you go on their website and look under universal filters they have all the dimensions. You just need to measure your carb flange and see how much available clearance you have around it.
o boy me and measuring. lol
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It's like ping pong up in here! Forgot to say It will be ok to tune to the pipe if you just want to scoot. When you do change out the box you will have to open the jet a little more, but you will have an ear for it by then, and it will go much faster. I can generally set the carb. w/ three attempts. First to get a ball park idea (rich-lean) second to find the other limit, and third to tweak it. The more you work at it the easier it becomes. Plug chops are the key. once you think you are running pretty good, get 3-4 new plugs, and do a few runs to verify. Even an EXPERT ENGINE BUILDER would not run an engine w/out a few chops to verify the cyl. temp
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It's like ping pong up in here! Forgot to say It will be ok to tune to the pipe if you just want to scoot. When you do change out the box you will have to open the jet a little more, but you will have an ear for it by then, and it will go much faster. I can generally set the carb. w/ three attempts. First to get a ball park idea (rich-lean) second to find the other limit, and third to tweak it. The more you work at it the easier it becomes. Plug chops are the key. once you think you are running pretty good, get 3-4 new plugs, and do a few runs to verify. Even an EXPERT ENGINE BUILDER would not run an engine w/out a few chops to verify the cyl. temp
sorry bout that. just wanted to make sure i could go 1 more. gonna go try that now. im not sure if i'm gonna buy jets or just get a bigger carb. i'mtrying to see what i got before spending any more money
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No apologies Bro! We all agree it sounds like you should keep going up. If/when you get a larger carb. the jetting will still have to be done. You will only need a larger carb. if you go w/ a bigger jug kit. Buying a few diff. jets will make it easier for for some. I just got tired of looking for a jet for this or that carb., and started cutting/soldering them.
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i went up 1 size. on the first run i tried it without the air filter. it would get to about 20-25 and nearly cut off. so i came back and put the filter box back on and when i get to 20-25 it studders. have i gone to large or can i adjust the mix screw?
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i have yet another stupid question. do rollers come with the pipe? i was looking in the left over bolts and found a bag. they look like the rollers i bought. they weight 6.1 grams. is this a good weight for my set up?
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It does sound like you may have gone too big. The mix screw will have no effect on WOT. It only adjusts idle to about 1/8 throttle. Sounds like it might be time to try your hand at soldering. The Technigas pipes do come with 6g rollers. You might want to give them a try. If they don't help take them out. 6g is too light in mine.
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It does sound like you may have gone too big. The mix screw will have no effect on WOT. It only adjusts idle to about 1/8 throttle. Sounds like it might be time to try your hand at soldering. The Technigas pipes do come with 6g rollers. You might want to give them a try. If they don't help take them out. 6g is too light in mine.
time to buy jets! lol the ones i saw on provo dont look like the one i have tho
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..dreflu, what are you using to open ur jet...you say "sizes"...
..a 85 jet is .85mm in diameter..or roughly .033 inch...
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Some carbs are also sized by flow, depends on the manufacturer. Something like how many cc's per min. Dre, your carb should be labeled as to what manufacturer on the side. Keihin is a common one.
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Some carbs are also sized by flow, depends on the manufacturer. Something like how many cc's per min. Dre, your carb should be labeled as to what manufacturer on the side. Keihin is a common one.
..yeah, that is a dang 2t...lol..
;)
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Some carbs are also sized by flow, depends on the manufacturer. Something like how many cc's per min. Dre, your carb should be labeled as to what manufacturer on the side. Keihin is a common one.
its a keihin.
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Here's a jet list for Keihin. Not sure if that helps any. Here's another link http://www.jiangwayne.com/scooter/p_tags.php?t=4&p=3. (http://www.jiangwayne.com/scooter/p_tags.php?t=4&p=3.) You may also want to check with a local shop to see if they have them, or can get them quickly. Those jets are pretty common.
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thanks shaka. i just get the kit and it will have the sizes i need?
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I actually tried to post another link also, but it wasn't that good anyways. I see that Jiange Wayne does kits of 4 jets. If you started at 85 then you probably need the 88,90,92,95. You may want to check around and see if anyone sells a kit. Also, contact Jiange Wayne and see how long it will take to receive them. I know Zombie has been waiting for almost a month for his rear shock! I would also try getting them locally first.
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What He Said.
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looks like i'm gonna be trying to solder. i'm gonna try a few shops and see i may luck up.
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W/ the air box off it would not run, and w/ it on it did but studdered, sounds lean still to me. If you are going to buy a jet kit then it wouldn't hurt to open it up a little more. Have you gone 1 or 2 steps so far?
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To solder them you will need a small tin of flux. It will clean the brass so the solder will stick. you can put a sewing needle in the center to have a pilot hole to start over.
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Zombie's right, if it won't run with the air box off, you may still me lean. You can also try putting a washer underneath the needle to raise it a little. On the stock Keihin I have you could squeeze a washer in there without any other modifications. It has a spring that holds the needle all the way down, so the washer will just fully compress that spring. If you're close, you may try that.
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i've tried tofind onebut allthe shops around here are closed on mon. i'm tryin to solder it but the solder keeps sticking to the needle and all. how do i get the needle out?
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Heat the needle. Most of them are stainless and will not stick. If it does just apply the heat straight to the needle
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the solder works too ;D
now we can get back to speeding this thing up!!