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Scooters - 50cc => Super 8 => Topic started by: scootz on April 23, 2015, 08:18:55 PM

Title: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: scootz on April 23, 2015, 08:18:55 PM
Hi All - New member/first post.

I've done a ton of research and have all mods mostly installed with the exception of the main jet.   I have an 86 jet and a 90.  Which one would be better for the setup below?  Is there a huge difference?

Here are my mods:
Technigas Next Exhaust
Malossi Variator w/7 gram rollers and smooth boss
Purple Contra Spring

Thanks
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: Chris0381 on April 23, 2015, 10:08:33 PM
Just to varify:

You have 3 screws visible ?????

1-Float Bowl drain screw
2-Slider adjustment screw
3-Airscrew

You have done absolutely nothing like remove airbox snorkel to increase any amount of air flow into the cylinder ?

I cant advise you as I dont run a chambered exhaust but hopefully someone can advise. There is a another new person (see recent thread) running a chambered exhaust with stock carb airbox just like you. Maybe hell get back to us on his progress or others can possibly help.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on April 27, 2015, 01:53:16 AM
Hey Chris - Thanks for the response.  I have an update.

This weekend I installed a 90 jet, a Technigas Next Exhaust, took the tube out of the air box, drilled two 1/2 inch holes in the stock air box cover, and added a Malosi Variator with 8.5 gram weights.  I was also able to do the idle air mixture adjustment.  The screw was as all the way to the right as other posters have stated.  At that point, I then tuned the carb and the scooter runs excellent.

I currently have decent acceleration and am able to get to 45mph tops rather quickly.   One thing to ask.......with my acceleration, I start off quick, but it really opens up after 15mph to top speed.  Is there any way to get more acceleration from 0-15mph?  Would I need a purple contra spring?

By the way, if anyone is interested, I weigh 192lbs with the mods in my sig to get 45mph.   
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: Chris0381 on April 27, 2015, 10:48:45 AM
Not sure too much about acceleration in your case.

I am only guessing here:

Purple contra with 8 gm Dr Pulley Sliders. Or a 1500 RPM yellow contra may equal the purple malossi contra I have. Im seeing the purple contra hard to find in the USA right now.

Im impressed with your performance so far. Ill be going to 8 gm sliders sometime this week when I install a torsion controller.

Using 8 gm sliders is like using 7 gm rollers.

Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on April 27, 2015, 02:19:33 PM
Not sure too much about acceleration in your case.

I am only guessing here:

Purple contra with 8 gm Dr Pulley Sliders. Or a 1500 RPM yellow contra may equal the purple malossi contra I have. Im seeing the purple contra hard to find in the USA right now.

Im impressed with your performance so far. Ill be going to 8 gm sliders sometime this week when I install a torsion controller.

Using 8 gm sliders is like using 7 gm rollers.

I purchased the purple contra from RP, but wanted to see what it was like stock and have not installed yet.  Scooter seems great without it so far, but I have not taken it on any hills yet.  Took a month to get the parts, but they have good pricing so I can't really complain.

I think I found the acceleration issue from one of your previous posts.  I believe I put the variator on and "pinched" the belt.  I am going to put a washer in to separate the belt a bit from the variator tonight after work and will report my findings.  Seems like it is starting in 2nd gear and not allowing to get to first.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: Chris0381 on April 27, 2015, 03:23:59 PM
You are ahead of me in performance and it seems your are now at the CVT tuning stage. Thats where the experts or trial and error come in to play.

Its kinda like when I kept calling my friend to ask how to get past levels of Rygar and at some point he couldnt help me as I eventually went further than him and one couldnt save that game. Well with the tornado hitting Hamden, Ct and parents banging on my door asking what I'm doing in there I finally beat the game a 1am in the morning. I luckily didnt lose power.

https://www.youtube.com/watch?v=UCkTZoDbnTw (https://www.youtube.com/watch?v=UCkTZoDbnTw)

Let me ask: did you remove the snorkel from the airbox if you even have a snorkel on that model.

Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on April 27, 2015, 03:44:03 PM
LOL.

Yep, I did remove the snorkel. :)
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: BettinANDlosing on April 27, 2015, 04:40:12 PM
I purchased the purple contra from RP, but wanted to see what it was like stock and have not installed yet.  Scooter seems great without it so far, but I have not taken it on any hills yet.  Took a month to get the parts, but they have good pricing so I can't really complain.

I think I found the acceleration issue from one of your previous posts.  I believe I put the variator on and "pinched" the belt.  I am going to put a washer in to separate the belt a bit from the variator tonight after work and will report my findings.  Seems like it is starting in 2nd gear and not allowing to get to first.

what exhaust pipe do you have? If its an expansion pipe you NEED to install stiff clutch springs, otherwise it engages below your RPM band. Expansion pipes DON'T hardly work at all if you rev too low, and if the springs engage the clutch before you "hit the pipe" it'll feel really, really weak. You can get the malossi "street" spring set and it comes with 3 different harnesses to try.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on April 27, 2015, 04:48:24 PM
what exhaust pipe do you have? If its an expansion pipe you NEED to install stiff clutch springs, otherwise it engages below your RPM band. Expansion pipes DON'T hardly work at all if you rev too low, and if the springs engage the clutch before you "hit the pipe" it'll feel really, really weak. You can get the malossi "street" spring set and it comes with 3 different harnesses to try.

Hey there.  I have the Technigas Next R
http://www.racingplanetusa.com/exhaust-tecnigas-nextr-kymco-horizontal-p-108-1.html (http://www.racingplanetusa.com/exhaust-tecnigas-nextr-kymco-horizontal-p-108-1.html)

So that must be the issue then?
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: BettinANDlosing on April 27, 2015, 05:17:49 PM
Hey there.  I have the Technigas Next R
http://www.racingplanetusa.com/exhaust-tecnigas-nextr-kymco-horizontal-p-108-1.html (http://www.racingplanetusa.com/exhaust-tecnigas-nextr-kymco-horizontal-p-108-1.html)

So that must be the issue then?

Yeah, that pipe looks to be for high RPM use, it'll suck until you change the clutch springs. You can do it at the same time as putting in the purple malossi spring. HUGE difference when you get the RPM in the pipes powerband.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on April 27, 2015, 05:21:08 PM
Yeah, that pipe looks to be for high RPM use, it'll suck until you change the clutch springs. You can do it at the same time as putting in the purple malossi spring. HUGE difference when you get the RPM in the pipes powerband.

Good to know. I was wondering why it was more of a slug until 15mph.  Anywhere besides RacingPlanet where I can buy these springs? 
http://www.racingplanetusa.com/clutch-spring-racing-original-clutches-p-190-1.html (http://www.racingplanetusa.com/clutch-spring-racing-original-clutches-p-190-1.html)

Also, for this spring kit, would you suggest using the 15% or 30% first?

Thanks again.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: BettinANDlosing on April 27, 2015, 05:35:39 PM
Honestly I would start with the red and go from there. That pipe is high revving and needs the RPM to work right. It'll jump really good off the line once you find the best combo. I would order those off RP, might check if they have them in USA stock otherwise they will take months to get them in.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on April 27, 2015, 05:50:17 PM
Honestly I would start with the red and go from there. That pipe is high revving and needs the RPM to work right. It'll jump really good off the line once you find the best combo. I would order those off RP, might check if they have them in USA stock otherwise they will take months to get them in.

That makes sense.  I actually just ordered the springs (Malossi) off Amazon.  Should get it by Wednesday with Prime.  LOL.  2 day shipping is better than one month.  Thanks again for your help troubleshooting this.  I appreciate it.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: Chris0381 on April 27, 2015, 06:21:06 PM
Will aftermarket clutch springs fit on the stock clutch? Is there a certain brand we should look for ? I'd like to try a set just a step down from reds myself.

Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on April 27, 2015, 06:24:09 PM
Will aftermarket clutch springs fit on the stock clutch? Is there a certain brand we should look for ? I'd like to try a set of yellow or blues (just a step down from reds) myself.

Absolutely.  Here is what I bought. 

http://www.amazon.com/gp/product/B00JNFC5OM/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 (http://www.amazon.com/gp/product/B00JNFC5OM/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1)
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: Chris0381 on April 27, 2015, 06:26:39 PM
These springs are baffling. Now the blues are stiffer than the reds.

I think I need something weaker than the greens though as Im in a lot of stop and go traffic. Maybe I should keep the stock spring on for now. Someone in another forum is saying even the green ones make him rev too much and is having issues in slower traffic.

I dont think they have whites for stock clutch.

Really eager to see how all works out for you.

Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on April 27, 2015, 06:47:47 PM
These springs are baffling. Now the blues are stiffer than the reds.

I think I need something weaker than the greens though as Im in a lot of stop and go traffic. Maybe I should keep the stock spring on for now. Someone in another forum is saying even the green ones make him rev too much and is having issues in slower traffic.

Really eager to see how all works out for you.

I'm going to install this Wednesday.  I will update you then on the results. :)
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: Chris0381 on April 27, 2015, 07:05:01 PM
Something else to consider

http://www.highgaintuning.com/Torsion_Control_MALOSSI_Piaggio_50cc_p/m2512828.htm (http://www.highgaintuning.com/Torsion_Control_MALOSSI_Piaggio_50cc_p/m2512828.htm)

I am waiting delivery on this. Its supposed to increase life of the contra spring and add some smoothness.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on May 01, 2015, 11:55:27 PM
Update: So I put the blue Malosi (sport, not the red ones) clutch springs this week while utilizing the stock contra spring.  The acceleration is still sluggish up to 15mph then oens up. So I took everything apart and installed the purple Malosi contra spring.  I am still having the same issue with acceleration.  Is it the rollers being 8.5 gram?  Do I need to go down a gram or two?
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: BettinANDlosing on May 02, 2015, 12:14:04 AM
Holy cow yeS!!! If I would have seen before you have 8.5g then yes thats the issue man!!! With a tuned pipe you might be as low as 4g rollers to hit the RPM range of that pipe!!!!!!!!!!
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on May 02, 2015, 12:22:02 AM
Holy cow yeS!!! If I would have seen before you have 8.5g then yes thats the issue man!!! With a tuned pipe you might be as low as 4g rollers to hit the RPM range of that pipe!!!!!!!!!!

LOL, I feel like such a boob.  Tomorrow I will change the rollers.  Thanks for the help!
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: Chris0381 on May 02, 2015, 01:48:22 AM
Just an idea.

If your variator works well with sliders :

Get a pack of 5g and 6gm dr pulley sliders.

Try 5gm
Try 6gm
Try mixture of 5gm and 6gm for 5.5gm effect.

Good chance you hit a sweet spot if 4gm rollers are good.

 
 
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on May 04, 2015, 03:39:59 AM
Hey guys - I installed 6.5 gram rollers (all I had at this time) and what a difference!  I will be ordering lighter weights since I think it could run even better.  Thanks again for the help/suggestions!
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: BettinANDlosing on May 04, 2015, 04:36:45 AM
Yeah buddy!!!! Once you get what works best, get Dr. Pulley sliders in there.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Carb Screw Questions - Easy stuff
Post by: scootz on May 04, 2015, 02:12:05 PM
Yeah buddy!!!! Once you get what works best, get Dr. Pulley sliders in there.

Funny you mentioned the Dr. Pulley sliders! 

I actually just purchased the Dr. Pulley sliders off Amazon for $20.  5gram.  I figured those would work great, but maybe I should have tried to experiment with cheap 4 gram rollers.  It seems to run pretty well with 6.5 gram, but I can tell there is still a slight bit of lag.  Figured 5g would work well.

on another note, I appreciate your help on this forum Bettinandlosing and from Chris.  You both have been most helpful in helping me get my scooter the way I want it.  It's such a different ride.  Time, research, and a little patience is everything when modding these scooters.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: Chris0381 on May 04, 2015, 03:31:23 PM
Sounds real good. Had a nice cold Long Island Sound sunset ride last night.

Ill be posting my ADV Monster Model 40 auxiliary light mod soon.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: scootz on May 04, 2015, 03:44:57 PM
Sounds real good. Had a nice cold Long Island Sound sunset ride last night.

Ill be posting my ADV Monster Model 40 auxiliary light mod soon.

Nice.  I'm in MN and the weather has been beautiful lately.  70s/80s.  I'm looking forward to a summer full of riding.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: BettinANDlosing on May 05, 2015, 06:35:23 AM
👍👍👍
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: scootz on May 11, 2015, 06:42:49 PM
I installed the 5gram Dr. Pulley sliders last weekend.  Acceleration is good and top end is about 42ish.  I'm going to try 5.5 or 6 gram sliders.  While I feel the acceleration is better, I think I might be a tad too light. 
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: BettinANDlosing on May 11, 2015, 09:39:34 PM
One thing to try also, use the malossi grease on the sliders.
https://www.treatland.tv/malossi-MRG-performance-variator-grease-p/malossi-variatr-grease-7611882.htm (https://www.treatland.tv/malossi-MRG-performance-variator-grease-p/malossi-variatr-grease-7611882.htm)
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: Chris0381 on May 15, 2015, 11:02:47 AM
I just threw in a #90 jet to my setup and I like the performance so far. Scooter seems to have a bit more pull and no bogging. Ill keep it in and check the plug for fouling in a weeks time.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: scootz on May 18, 2015, 12:29:23 AM
I just threw in a #90 jet to my setup and I like the performance so far. Scooter seems to have a bit more pull and no bogging. Ill keep it in and check the plug for fouling in a weeks time.

Nice, let me know what you find!   I haven't updated anyone in a while, but I finally got the 6 gram Dr. Pulley sliders in and it's perfectly balanced.  I had the 5 gram sliders, but it was too light.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: Chris0381 on May 18, 2015, 10:56:54 AM
You have a real nice simple recipe there w/o having to do a BBK.

Looks like its working well.




Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: scootz on May 18, 2015, 04:43:37 PM
You have a real nice simple recipe there w/o having to do a BBK.

Looks like its working well.

Thanks Chris.  I should be satisfied for a while before I get the itch to do anything else.  The only think I can think of is a BBK w/ a bigger carb down the line, but I'm happy the way it is.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: Chris0381 on May 18, 2015, 05:44:19 PM
I dont know if I would want to run 50 MPH on the flats, I'd like the power for the hills but when I am at 44-45 MPH down some straight hills, I feel the bike frame and suspension near its limit of safety.

I do run my tires 35 PSI rear and 30 PSI front (a little over inflated).
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: anarchyx34 on May 19, 2015, 02:44:07 AM
I don't know much since I've only owned one of these for 2 weeks but isn't the frame & suspension the same as the Super 8 150? That does 50+ out of the box doesn't it?
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: Chris0381 on May 19, 2015, 10:24:54 AM
The 50cc has one shock and the higher cc's have 2 shocks. 2 shocks vs 1 shock can make a difference hitting dippy surfaces, a piece of debris or pot hole at 50 mph. I notice at about 42 MPH oscillations and vibrations start to set in. I can almost know when Im doing 40 MPH without looking at the speedometer.

Probably all fine if road surfaces are perfectly smooth and flat.

http://www.calsci.com/motorcycleinfo/Suspension.html (http://www.calsci.com/motorcycleinfo/Suspension.html)

Any procedures to show how to add a second shock ?






Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: demeter on May 20, 2015, 06:09:29 AM
The 50cc has one shock and the higher cc's have 2 shocks. 2 shocks vs 1 shock can make a difference hitting dippy surfaces, a piece of debris or pot hole at 50 mph. I notice at about 42 MPH oscillations and vibrations start to set in. I can almost know when Im doing 40 MPH without looking at the speedometer.

Probably all fine if road surfaces are perfectly smooth and flat.

http://www.calsci.com/motorcycleinfo/Suspension.html (http://www.calsci.com/motorcycleinfo/Suspension.html)

Any procedures to show how to add a second shock ?

I know the feeling. I'm used to it now and dont really mind it. I'm doing 40 to 45 and hitting the limit on the speedo (50) down some hills. At first it really scared me but the more I ride it the more comfortable I've become. The only time its given me pause is down hill with the speedo maxed and the engine sounding like it's doing 10k rpm. That's when I slow down...
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: anarchyx34 on May 21, 2015, 05:58:26 PM
FWIW I just was at the dealer having some minor warranty work done and I was checking out a new Super 8 150 they had on the showroom floor. One shock, just like my 50.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: demeter on May 22, 2015, 04:47:57 AM
FWIW I just was at the dealer having some minor warranty work done and I was checking out a new Super 8 150 they had on the showroom floor. One shock, just like my 50.

I saw a beauty just the other day. Super 8 150cc X edition.

Maybe it's the Super 9's that are dual shock.
Title: Re: 2013 Kymco Super 8 50 - 86 vs 90 jet and Mod questions
Post by: BettinANDlosing on May 22, 2015, 07:39:44 AM
I saw a beauty just the other day. Super 8 150cc X edition.

Maybe it's the Super 9's that are dual shock.

The old super 8 150 have dual socks. The new Super 8 is closer to an agility.