Increasing performance on 2012 super 8

[gnvernon]

I purchased my 2012 Super 8 last summer and had it derestricted at the dealership. They said they installed the derestriction parts that come with it and removed the rev limiter. I keep up on all of my maintenace but am only getting 32 MPH on the flats and I weigh 170 pounds. I noticed that if i get it up to 35 going down a hill, then I can easily hold that speed on the flats. Any advice on new roller weights, carb jet, or other easy modifications that will increase my performance? Thank you

[zombie]

New carb/pipe/clutch/variator.

You can get all that thru SPI for well under 300.00, and get 50-55MPH.

The next step would be a BBK or Big Bore Kit. That could get you to 60MPH. around 150.00 or less depending on what level BBK you buy.

[gnvernon]

any advice on which kind to get?

[Chris0381]

gne you have a 4t ?. Just to let you know there is no CDI restriction on the 2t Super 8 (the the CDI restriction wires should not be there stock in a 2t)

[zombie]

http://www.spi-parts.com/scooter-parts-performance/kymco/polini-3g-racing-clutch-107mm-3-shoe.html

http://www.spi-parts.com/scooter-parts-performance/kymco/polini-variator-kymco-people-50.html

http://www.spi-parts.com/scooter-parts-performance/kymco/malossi-variator-adjuster-srping-honda.html

http://www.spi-parts.com/brand/tecnigas/trek-kymco-super-9-top-boy.html

http://www.ebay.com/itm/new-replacement-OEM-from-Dellorto-PHBG-DS-Black-21mm-Racing-Carburetor-Carb-/221247114740?pt=Other_Vehicle_Parts&hash=item33835b0df4

Forum members have an arrangement with SPI. Call up, and set up a dealer account. (everyone can do this)
That way your web page will show the Dealer cost for the items. It's between 20 - 40% off most items.

Perhaps he can even supply the Carb for you at a good price.

http://www.kymcoforum.com/index.php?topic=11581.0

[gnvernon]

does anyone know the dimensions for the main jet in the keihin 16 mm carb?

[zombie]

78 / 82 is the norm. 27 / 34 for pilots. Depending on altitude.

You can up jet them some... 16mm is just too small to make power w/ a pipe. 19-20mm is perfect w/ an 8K pipe.
The Polini clutch  is fully tunable to launch at 7K if you like but it ia also tamable to launch at 3K if you prefer a lower profile.

If you trim up a Malossi sport you can easily gain 5HP with a carb/pipe.
I think B&W has some "old type"  (olden timey.) manifolds that might work...
If your handy w/ a grinder you can modify the stock manifold to 19-20mm, and work as a universal  coupler.

It'll be reliable, and strong. Mine lasted 3 years of daily beatings. The kymco cases are plenty strong. The only failures are when raw parts are hammered together by overanxious "builders".
We've all done it.

[gnvernon]

What type of variator rollers would you recommend and how to I know what weight to get?

[BettinANDlosing]

Yeah I think you're shop bullsh**ted you a little bit. There is no rev limit on the new 2t bikes. Maybe they didn't put the derestrcted main jet in.... I've found the s8 fully de restricted should get a solid 35mph. Look into my exhaust derestrction thread, that'll get you a solid 40. The best variator is made by Dr. Pulley, and pair that with Dr. Pulley sliders and a yellow or red torque spring.

[gnvernon]

what weight sliders do you recommend? I plan on performing the exhaust mod, opening the airbox intake, and I have an 85 and 90 jet at my disposal.

[Chris0381]

I also went to do some carb tuning the other day and noticed my air screw isnt actually a screw.... its flat. Is this normal?

Its normal.

Options are:

Buy a proper special socket for the screws head as it stands with a flat on it.

Dremel a slot while on the carb.

Dremel a slot after taking screw out by turning it with needle nose pliers.

Just be careful as I almost trashed mine by holding both the dremel and pin by hand. Its very soft brass and I mean soft.

A hacksaw blade can also be used.

[gnvernon]

Any thoughts on this variator? http://www.scooterdynasty.com/PoliniHighPerformanceSpeedControlVariatorKitsforKymcoScooters.aspx

[Chris0381]

I see they did derestrict your scooter at 32MPH the smooth boss is probably on. Did they put on the #82 jet and did you take the tube out of the airbox if the #82 jet is actually on.

I think an initial exhaust mod and an upjet to at least a #85 jet would be my first choice but others depending on tool availability my think otherwise.

[gnvernon]

I tried taking the snorkel out of the airbox and dremeled out the opening. This caused me to have fine takeoffs but would nearly die after 10 MPH

[nuggzy]

first I did full NCY cvt  kit,and 82 main jet better performance but still lil sluggish then added OML high output coil wire and iradium  plug smoother idle and starting , and today I added a hand made leo vince T.T. exhaust and rollers that came with it not sure on the grams and changed spring to 1000rpm  and 1500 clutch springs after an hr tweaking the carb I think I got the sweet spot because it really woke up and has awesome acceleration great low end  I was bypassing the 45mph mark but backed off it would of went more I still hade some throttle left but I wanted to check the plug to see were im standing before I run it to hard thinking of jetting up to 85 main after looking at the plug im scared of running to lean .