KymcoForum.com
Scooters - 50cc => Super 8 => Topic started by: johnny1more on April 02, 2012, 01:39:03 AM
-
Okay, picked up my new scooter yesterday. It looks awesome but only goes 27mph. Under the seat was a bag with a spacer for the variator and a main jet. I installed the spacer and got almost 30mph. I looked for the red and violet wire at the cdi connector so I could cut it but it's not there. Installed the new main jet and got around 32-33mph. My problem is that i have 3 other scooters that are all stock and pull away from this thing and make it look bad. My zuma is the fastest at 42mph but even the slowest of the two ruckus pull on this thing. Even my daughters pink and black zebra striped ruckus pulls on this thing. Let me tell you how much fun that is when my 15 year old daughter beats her dad on his hot new Kymco. I removed the small bolt in front of the muffler so it can breath better. Not a lot of help but it sure sounds better. Removed main jet again and since it's Sunday and everything is closed i drilled out the stock jet to around a 97. Now its even slower. Okay that didn't work, too much fuel not enough air? What will male this thing run with my other scooters? I'm only looking for high thirties.
-
Is it a 4t or 2t?
-
It's a 2t. My dealer told me it only comes in a 2 stroke for 2012. I thought the 2t would be faster, especially out of the hole. My 4 stroke ruckus is even faster on take off. How about changing stock weights and the k&n filter that other people on this forum talk about. Thanks for your help.
-
I have the same problem. Max on flat road is 35 on a 2t with 82 jet and smooth boss. My friends cheap Chinese stock 4t 50 does 45mph no problem. If those are the only restictions done at the factory I should get more than 35mph. Should not have to by extra parts to get speeds I should have gotten to begin with.
My dealer says there are no other things holding the scoot back. That is just all it will ever do without buying a t-pipe, better var and such. ???
-
First the spacer has to stay OUT of the var for more speed. Have you looked inside the exhaust for a welded washer in the cylinder end? Inside the air box I think there is a rubber tube that restricts the air flow to the carb. That must come out. I dont know much about the S8 but these are the usual suspects. Last is get a 1500 Torque spring. That will hold low gear longer, and increase your rpms
-
There's no washer, I pulled the exhaust off my '11 and there was nothing there.
I'm going to dremel the bottom of the air box to get that pre-filter tube out of the way, but that's about it for the engine until I either buy a carb or jets. My air filter is coming in this week sometime, but I won't install that until I have more stuff to throw at it. My Multivar hopefully will make a difference. If not, I'll try some lighter DR pulley weights and see how that does.
-
Anything to get the rpm's up. Generally changing the contra spring is the best overall. Better revs, longer gears, and quicker down shift.
-
Okay, my super 8 has been at the dealer for two weeks now. They can't get it to go over 27mph. They have been in contact with the factory rep and now have ordered new reed valve for it. The rep said they have a few with leaking reed valves. I'll keep you posted if this works.
-
Okay, my super 8 has been at the dealer for two weeks now. They can't get it to go over 27mph. They have been in contact with the factory rep and now have ordered new reed valve for it. The rep said they have a few with leaking reed valves. I'll keep you posted if this works.
It´s easy to get the Kymco 2t to 50 mph. The 2-stroke version uses Kymco’s clone of Honda’s AF18/AF16 motor that dates back to the mid 90’s when these two companies parted ways in the 90’s. This motor is a basic design (air cooled, 2-valves, carburated) but its reliable and has a lot of performance potential. A derestricted Super 8 is capable of 45-50mph and these motors can easily be modified to 70mph and beyond. The ’94 - ’01 Honda Elite SR shares the same basic motor as the 2-stroke Super 8 (with some small differences)
Modify the airbox so the carb (Keihin 16) get more air. Larger mainjet and get the engine a new exhaust.
-
okay, the dealer delivered my super 8 to my house this afternoon. It was in my driveway when I got home from work (great service dept.). The bad news is that it really isn't much better. The service manager said the Kymco rep said that if I want it to go faster than I need to change the exhaust. He claims that it is very restricted. He said the exhaust off of a super 9 should work. I'm not sure what year to look for. Any ideas? When I took it for a ride tonight I did get it almost to 35 downhill with the small bolt removed from the side of the exhaust just in front of the muffler, but on level ground it's more like 30-32. Im still not happy with this scooter. Anybody want one with 21 miles on it? I'm going to get the Aprilia like I should have in the beginning.
-
There is a HUGE difference between the two bikes. The Ape is a MUCH better bike.
-
There is a HUGE difference between the two bikes. The Ape is a MUCH better bike.
Not for a tall driver..
-
I called Kymco and got a tech rep on the phone. He pretty much told me he wasn't allowed to tell me anything. I did get him to admidt that the exhaust is resticted and he said he would only talk to my dealer. I gave him the service managers name and number. About three hours later my dealer called and said they told him to have me call a guy in Key West Florida at the moped hospital. I checked out their website and a couple others. I found a website called provoscooter.com and liked what i saw. I now have a stage one performance kit on order. $436 later I sure hope this works. I'm now within $800 of what I could have bought the Aprilia for. I'll keep you posted of the results.
-
Good luck!
-
My kit came in and I installed the exhaust first. First ride over 40 MPH, an easy 10 MPH gain from that alone. Plus awesome acceleration. I then put in the new variator and weights. I didn't really see any results but I have different weights and springs to try. I'm just happy this thing has potential. I was really starting to worry. I'll keep you posted of final results.
-
Cool!
Sucks doesn't it. Kymco spend money to restrict it and we have to spend money to derestrict it.
Good luck! You should get a least 45 out of it with some tuning.
-
My kit came in and I installed the exhaust first. First ride over 40 MPH, an easy 10 MPH gain from that alone. Plus awesome acceleration. I then put in the new variator and weights. I didn't really see any results but I have different weights and springs to try. I'm just happy this thing has potential. I was really starting to worry. I'll keep you posted of final results.
Bigger main jet? Tell more about the kit? Name of the exhaust?
-
I still have the factory main jet installed. I think I should change it as I fear it could be a little lean due to the new exhaust. The kit is called a stage one performance kit from provoscooter.com. The kit came with technigas RS II expansion pipe chrome, malossi variator, malossi racing cluth spring set, ruima variator roller tuning kit, uni filtered air vent, and I ordered a set of 10 gram roller weights. I put the racing springs in today and the 10 gram weights. It now will go as high as 47mph on slight downgrade. I'm going to need some time for testing different weights and a larger main jet. The biggest improvement from everything is the exhaust. It's a little loud for my taste,but is acceptable.
-
Change the jet right now! You are running lean. and can be doing serious cylinder/piston damage right now.
I can't believe this so called "kit" didn't come with a larger jet.
-
I run a 91 jet on my super 8 50 2t with stock exhaust and opened up airbox. The plug chops are coming back good so I know you must be burning that thing up.
-
Anyone got a DIY on jetting? Can I do it with the carb on the scoot?
-
Carburetor Jetting (http://www.youtube.com/watch?v=4sMlGk21KwE#)
Search GY6 jetting. Loads of vids.
-
Definately need to upjet. Try out that stock jet you drilled out to a 97. That'll be much closer then your current if you have a Uni Filter and that exhaust. Not fun learning the Hard way :'(
-
I put the larger jet in that I drilled out, probably around a 97. It wouldn't even idle with the air box installed. After a bunch of trial and error I ended up drilling a couple more holes in the air box so it can get more air. Went for a couple hour ride last night with my wife which included some wide open cruising and some 15 to 25 MPH through a suddivision. This is the best this thing has ever run. Great power and acceleration and I checked my plug and I'm not running lean. My wife tells me to leave it alone.I think I'm done for now. Thank you everybody for all of your input.
-
8)
-
Hello again. Just a quick update. Scooter is running great with about a 45 mph top end and decent all around performance. It could be a little better out of the hole as my Zuma pulls at first then the super 8 gets it on top end. Now the bad, I smoked my belt with under 500 miles on it. Any ideas? I'm told I need a kevlar belt, but cant seem to cross referance the size. When mine let go I was at top speed and when I took it apart all that was left was about a 5-6 inch piece and a lot of dust. Thanks for any help.
-
Wow! 500 miles. Something's not right. My factory belt lasted 13,000 km.
-
The issue there is the 10gr rollers. It's alot of strain on an oem belt. Have you tried lighter rollers? They will get you better take off. If 10's are correct then you do need a Kevlar belt. The issue there is wear on the rest of the drive train. Kevlar wears the metal. What contra spring is installed? The white one from Malossi? You could easily run 6gr rollers w/ that.
-
Yes the spring is the white one. I'll try the other rollers, I just don't want to lose any top end. Do you know the size of the factory belt? Mine is destroyed and I can't find the size. I don't know how to find a Kevlar belt, most sites do not show any parts for the 2012 model year and I'm not sure if the previous years are the same or the four stroke model is the same. You have me concerned about the wear from a Kevlar belt. Are there any other options?
-
A 2011 and a 2012 are the very same scoot. No changes.
-
I installed a Malossi variator on my 2011 super 8 2t and it added no top speed. I noticed a lot of belt dust soon after the install. It was burning up my belt. I went back to the stock Var with no speed loss and no more burning belt. Most people think the rear driven pulley is also restricted on these scoots. I have not changed it yet.
-
Yes the spring is the white one. I'll try the other rollers, I just don't want to lose any top end. Do you know the size of the factory belt? Mine is destroyed and I can't find the size. I don't know how to find a Kevlar belt, most sites do not show any parts for the 2012 model year and I'm not sure if the previous years are the same or the four stroke model is the same. You have me concerned about the wear from a Kevlar belt. Are there any other options?
You will most likely GAIN top end by going lighter on the rollers. If they are TOO light you will loose top but 10's are WAY too heavy. Look up any year S8 on this site. http://www.stadiumyamaha.com/ (http://www.stadiumyamaha.com/) some scoot models list the actual size on the parts diagram. If the size is not listed, copy/paste the part number, and google around till you find at least two sites that list the same size. Kevlar is really only used for hi performance set ups. It is tougher on parts, and doesn't last as long as polyester/nylon belts but it will not slip in the pulleys.
-
how light can you go on rollers? I'm running malossi 8.5g on stock variator with yellow contra and clutch springs. Is 5.7g too light? it came with my leo vince exhaust.
-
they may be on the edge of too light.. I run 6.5 with a Malossi blue spring. Try them, and see. If they are too light you will have super high rpm, and lower top speed. If they are right you will have higher rpm, and higher top speed. You could also mix them 50/50 to see if that combo's avg. is better. Then get a proper set at that weight.
-
Yeah, with the new belt, I got a little speed back, but it's still just not doing it. Put the Malossi 9.0g weights back in instead of my 6.5g Ninja sliders and the speed is up again. I can't win! I swear the scoot just likes me to keep tinkering!
My next plan is to just get a variety of weights and see what works best for where the scoot is at now.
I wanted to pick up a muffler and install my air filter and jet it, but a Triumph Thruxton is looking more and more likely in the spring!
-
I have read that the ninja sliders "act" 1 gram lighter than advertised. So your 6.5 sliders are more like 5.5 gram rollers. Waay too light. Try 7 or 7.5 rollers, or 8 - 8.5 sliders.
-
Alright zombie I just put kymco 6.5g rollers with blue springs and yellow clutch. Running with 70bbk and de restricted Leo Vince exhaust. My top speed on flat is 74-76kph. What's yours?
I hope to get more top end after installing my malossi final drive gears
-
zombie's MIA at the moment. Sounds like you're doing better. I'd think you'd be up around 80kph, but 76 isn't too far off. A slightly longer belt may get you a little extra top end, I know it did for me.
-
Can you give me some specs on the longer belt that you purchased? Just give me that belt number and i'll go order it from spi parts