KymcoForum.com
Scooters - 50cc => Super 8 => Topic started by: Luke. on June 09, 2010, 02:53:31 PM
-
I've had my Kymco a few months now, as i've mentioned in another post, and i've disconnected one of the eight wires in the CDI to take off the rev limiter, this has resulted in quicker acceleration and about 4-6 mph higher top speed.
As this is all i've done it is only going about 35/36/37 MPH now, i've looked for derestriction methods around but no one seems to know much about it, does anyone have any idea about what restrictors are on a Kymco super 8 4T?
Thanks for your time,
Luke
-
+1 I am in the exac same situation as you. ::)
-
It's probably one of the hardest peds to derestrict "/
how much did it add for you when you cut the rev limiter & have you heard of any more restrictions?
-
Well when I got it, the violet wire on the CDI was already cut. I can at the moment (when its warmed up a bit) get 60 km/h which is about 38mph at the max. It will not go over this at all, even when going down hill it just sticks at 60 km/h. I think there is 3 restrictions on the bike. The CDI wire (which is already done), the variator boss, and changing the carb main jet to a size 85. I dont really know of any more.
-
..gotta de-restrict that boss...that's a major factor...
-
How do you de-restrict that though? Is it just a washer.. or is it a new/better part?
-
yeah mine's 38 on the flat, when you go down hills, have the throttle held three quaters pulled back(if that makes sense?) it works for me, well i three quater throttle all the time, it seems to go faster? next time you go out on it give it a go :)
i've heard there's a restricter in the exhaust(a plate that needs to be hammered off), the variator needs to be replaced with a smooth one(the current one has a restricting 'shoulder on it' and not sure about anything else, i'm just hoping people know about other restrictions or more about the ones i've mentioned.
-
Yeah I've tried that.. it works :P
For now I just want to de-restrict the drive boss but I don't know how to do it or what things you need.
-
you tried it then? :)
yeah same really, i took the funnel out of the air filter cos' apparently it's a restricter, i see no difference so to save yourself time, don't try that one ;)
i think you may have to buy a new one, a 'smooth' one, unless you wanna try cutting off the shoulder so its smooth, i'm not too sure what it looks though, i'll have a look at my variator tomorrow and get back to you, unless you've already seen it?
-
Well.. with whats happend to my scooter recently, with me frying my CDI which cost £86 to replace and one very very very hard to start scooter, I got half way in taking off the CVT cover, I gt all the bolts off and was at the point of it coming off but something was preventing it somewhere, also a type of washer fell out, that scared me so I put it all back together again :P Then went for a ride to test it, it was ok. Do you have to take off the kick start lever?
-
£86?
derestricted ones are sold for just under £20 i think :S
well i kept the kick start lever on, my friend helped me with it so i'll have to ask him, there are alot of bolts holding it on though there's one or two deep ones? tomorrow when i try it shall i send you a picture of the opened variator?
-
Here's where I would start! http://www.malossiusaonline.com/product_p/5111151.htm (http://www.malossiusaonline.com/product_p/5111151.htm) That's the quickest shipping, low cost company I buy from. There are a TON of posts on swapping out the parts, and tunning them. "search" feature for some of them. Ask if you get stuck! It is a fairly easy job if you get it all planed ahead.
-
Well yeah I wanted to keep the geniune Kymco parts really. Didnt want to make it even worse if the aftermarket ones arent right!
And yeah a picture would be very helpful, thanks very much. ;D
I just dont know if its a washer that restricts the variator or if it needs a new part. I hope not a new part. :-\
-
fair enough, it's only a little bolt type thing :L probably won't cost over £5? :)
that's alright (:
-
Yeah I think its a spacer type thing. http://gy6-performance.fr/drive-boss-face-spacer-139qmb-c-100.html (http://gy6-performance.fr/drive-boss-face-spacer-139qmb-c-100.html)
-
Hey all I don't have a super 8 but most are similar.The kick starter and side cover should come off together.Your 3/4 throttle position is most likly because it's starving for fuel bigger main jet should help.Hard to say without seeing,but the thing that fell out is most likely an alignment dawl.Don't get scared if anything else falls out somthing isn't qute right youll need to get in there anyway.Good luck
-
Right I couldnt wait to see inside this thing so I went for it again and this time managed to get the cover off. Oh and the spacer that fell out was nothing serious, it was just there to help hold the cover on. Anyway I've taken a picture of the inside of the CVT. I'm just curious as to what the drive boss is? And how I can de-restrict it. Also the variator at the front, the bolt I cant undo as the variator keeps spinning so I can get a grip of it, is there a special tool I need to get it off?
(http://i609.photobucket.com/albums/tt178/waltonsteve/SNC00199.jpg)
(http://i609.photobucket.com/albums/tt178/waltonsteve/SNC00202.jpg)
-
could you hold the variator still while you unscrew it?
-
Well you have to use quite a large spanner and its pretty tight and it hurts your hands when you try to hold it still because the force of the spanner is a lot greater than the force of your hand. :-\
-
If you have access to airtools or electric impact driver should come right off.The drive boss will be between the variater the one on the left.The ramp and roller weights.Once you get the nut off and outer gear try to hold all together so you can see how it works.If you dont parts will fall out of this piece not hard to figure out but best to get a look at it first.The boss is the tube thing between the two,some just have a washer that needs to be removed some need to be replaced with a unrestricted one,if it has a machined lip most likely need to replace or have shaved off.should be smoothe all the way.Hold rear roller ramp together when replacing or the rollers can get turned sideways play with it a little bit youl figure it out.Good luck
-
Ok cheers for that. You mean the bit between the outer pulley and inner pulley of the variator, where the belt grips?
Think its time to order an impact wrench.
-
Will this do the job?
http://cgi.ebay.co.uk/COSMO-1-2-12V-PORTABLE-IMPACT-WRENCH-STORAGE-CASE-/270579945570?cmd=ViewItem&pt=UK_Home_Garden_PowerTools_SM&hash=item3effd25062 (http://cgi.ebay.co.uk/COSMO-1-2-12V-PORTABLE-IMPACT-WRENCH-STORAGE-CASE-/270579945570?cmd=ViewItem&pt=UK_Home_Garden_PowerTools_SM&hash=item3effd25062)
-
You got it!
-
Ok thanks for your help.. so if the drive boss doesnt have a washer (which I couldnt feel) and is machined on, when you undo the vatiator, does the boss come off from in between the variator and comefree? If so would this be any good?
http://gy6-performance.fr/unrestricted-variator-bush-kymco-super8-p-734.html (http://gy6-performance.fr/unrestricted-variator-bush-kymco-super8-p-734.html)
-
that's the right one ^ :)
-
I'll just wait for this impact wrench to come and if it does require that part I shall order it ;D
-
Hey if it's cheap and your rich order it!Someone will need it.I got no pacience ;D
-
Hehe!
-
ah i probably won't need to open up my bike for now then, hope it goes well :)
-
I've just had another look at the variator boss where the belt runs on on the variator. It seems to already be smooth? There is no washer, lip or anything, its just smooh all the way across where the belt runs. Here's a pic.. I don't know if it will show up that well but here we go:
(http://i609.photobucket.com/albums/tt178/waltonsteve/SNC00208.jpg)
-
have you tried taking it off?
-
It will most likely be hidden where it runs through to the rollers have to remove to see.You are going to need to replace a belt someday Its good practice.The roller ramp is on the right side.
-
No I cant remove it yet until Iget this impact wrench.. The job will be a whole lot easier when I have the proper tools! I just hope its not too difficult to remove th variator and remove/replace the washer/restrictor
-
It's quite easy just try to hold the roller housing together once the rest is off.You will be able to see how it works and know where all the parts go.Another note you will have to relieve the pressure on the belt at the clutch side.Just have to compress the spring It's stiff and rotates a bit.
-
Are you quite sure that its restricted because I te bt which the clings on on the variator was flat and smooth with no washer just the outer pulley and inner pulley between it. Will the restriction be somewhere else? Also what do you mean by compress the spring?
-
actually I ment de-compress.You can do it by hand It's a litte tight,you will pull the clutch ramps apart slightly and push the belt into the groove to give you enouph play to get the belt off the veriater side.The boss rides inside the roller ramp you can not see all of it.The lip would most likely be inside if restricted that way.I do not own this model but most are the same.Good luck
-
i've heard the springs are too tight and if you loosen them your bike runs quicker?
-
^ How do you do that?
-
me or art?
-
When you said about loosening the springs?
-
I would not loosen them You can change them to different pressures Work an veriater first clutch is a little diferent animal ;D
-
The boss must help because i see that it can be done on other scooters.
-
ah thanks, i knew it was something around the areas of loosening and the pressure of them.
-
how much speed could i get out of my super 8?
-
De-restricted you should be able to run right around 50mph.
-
I have just bought a performance clutch shoe with blue clutch springs (It also comes with spare red "Hard" springs). What's the difference between hard and soft springs? I bought this to mainly sort out my "creeping forward" problem but also to try and get some improved performance. Also along with that I have also bought a Polini performance speed control variator that is unrestricted. Also bear in mine that my CDI already has one of the violet wires cut to take away the rev limiter. With just these modifications what speed do you estimate I shall get? I dont really want to change my main jet in my carb you see because it will lower my MPG.
Thanks. :)
-
i would think ATLEAST 45, my prediction would be around 50? but i'm not too sure, how much did each of them cost you anyway? & when you say creeping forward, do you mean acceleration?
-
The red will most likely be to stiff.They are rated for rpm the red is for full race setup,1000 to 1500,should get you there,not sure what the blue is rated at.You will have to try a couple different roller weights to get it just right.Probably have to go up a jet or 2 for best performance.keep an eye on the plug color,don't want to run to lean.Should get to 50+Good luck
-
Luke: I am hoping for 50mph+ really :) The clutch shoe cost me £35 (not including p&p): http://www.adrenalin-pedstop.co.uk/p/SPEEDFIGHTAEROXRUNNER-ADJUSTAB-797.aspx (http://www.adrenalin-pedstop.co.uk/p/SPEEDFIGHTAEROXRUNNER-ADJUSTAB-797.aspx)
The variator will cost me £43 (I cant order it yet until they get some more on Monday):
http://www.adrenalin-pedstop.co.uk/p/POLINI-VARIATOR-SPEED-CONTROL--2992.aspx (http://www.adrenalin-pedstop.co.uk/p/POLINI-VARIATOR-SPEED-CONTROL--2992.aspx)
When I say creeping forward I mean when its idleing at a stand still. With my problem (hopefully) needing a new clutch shoe.. this should sort it out and also give me a tad of boost in performance.
But the main boost in performance really will come from the variator I suppose.
art: Do you know what the standard jet is on a stock Super 8? Also what do you mean by: "keep an eye on the plug color,don't want to run to lean."?
-
The creeping forword can be to high an idle,if there arn't to many miles on scoot idle down a bit.I don't know the stock jet size should be in the manual if you have.The spark plug color tell alot about the fuel air mixture,grey white is not good to much air can worp and or burn your cylinder and piston it would be running to hot.a nice brown is what you want.It is what is refered to as a plug chop where you cut the power to your engine at different throttle openings to see how fuel is being consumed at low,half and full throttle so you can tune each level for peak performance..Black is to ritch,but better a little dark than to light. http://www.dansmc.com/spark_plugs/spark_plugs_catalog.html (http://www.dansmc.com/spark_plugs/spark_plugs_catalog.html)
take a look at this link It will help.Your on your way to becoming a tuner ;D
-
Thanks for this art! My high idleing/creeping forward problem it says in the manual is due to clutch shoe wear a broken clutch spring. I can alter the idle speed on the stand but when I put it on the floor it high idle's again and engages the clutch.. the idle screw doesnt do a thing once the scoot is on the ground and off the stand.
Just using this quote from zombie in another thread: "The Uk bikes are done at the air box/ carb main jet/ var bushing/ exhaust pipe washer. You need to remove the washer in the exhaust header, change the variator boss, remove the restriction in the air box, and go up 2 sizes on the main jet. That will get you rocking."
Does anybody know where the restriction is in the airbox? Also in the exhaust header, where is that and how hard is it to remove these restrictions?
Thanks. :)
-
ah okay, i recommend this one though, just looking over different things :)
http://www.adrenalin-pedstop.co.uk/p/MALOSSI-MULTIVAR-VARIATOR-FOR--1153.aspx (http://www.adrenalin-pedstop.co.uk/p/MALOSSI-MULTIVAR-VARIATOR-FOR--1153.aspx)
-
Are you sure you are not just turning the idle mix screw you should have two screws at the carb one is the air idle mix the other is the idle itself It may be an adjuster at the end of the throttle linkage,It should deffinatly change the rpms one way or the other.I think your turning the mix screw.How many kelomiters does it have?
-
& the restrictor in the exhaust, is that a plate or a washer?
-
Yeah! This was the one I was going for originally but i rang them up and they said they wouldn't be getting any more back in because the Polini one's turned out to be better so that's why I'm guna order that one ;D
art: No.. when the scoot is on the stand.. it idles just how it should.. I havent touched the air mix screw, that is on the right side down below. I am adjusting the idle screw which is connected to the throttle cable. It has all the effect in the world when on the center stand but as soon as you push the scooter off the stand onto the floor.. the scooter rev's come up to high idle and no matter what you do.. turn the idle screw or not.. the idle rev's don drop at all. I really do think its broken clutch shoe/springs.. It has about 8800 km now??
-
Yeah I really want to know where this restriction is in the exhaust and how hard it is to remove it really. Also the air box where is the restriction on that?
-
The restricter at the air box can be a sleeve at the back of carb where the boot connects.Usualy plastic smaller in diamiter restricting air flow from the air box.The exaust can just have a washer right at the mount or could be welded in further down the pipe.I havn't seen this model
-
Is the boot hard to disconnect from the carb to remove the plastic sleeve if it has it?
And is it hard to disconnect the exhaust at the mount to have a look for a washer/welding?
-
..the boot is a little tough getting it loose...it's a hard rubber and fits tight, but it will come off..
..be careful not to pull the carb out of the intake manifold port...
..i don't think there is a washer, or anything you can do to a 4t exhaust...i've tried...
-
..i did cut my exhaust open, (there are pics somewhere in the A50 board).. and removed the catalytic converter and part of the baffle..
..wound up cutting it back open and welding the baffle back in...
-
Ok cheers. If needs be a might just get a leo vince exhaut later on but I will see what different this new variator/clutch and if there is an air box restrictor makes for now.
-
..some have the airbox restrictor, some dont...
..imma buy a performance exhaust, as ever since i removed the cat, i can't get rid of a minor backfire at decelleration..
..wish i had nevr touched it...
-
I'm just hoping it has a restriction in the air and not one in the exhaust as I dont fancy taking exhaust apart :-\ But I suppose I better have a look at the mount.. see if theres one there, if theres not I'l just leave it.
Learn by your mistakes as I've experienced not long ago with my CDI blowing! :D
-
..i've never seen a 4t with an exhaust restriction..
..think you'ld be wasting your time looking for it...
:'(
-
Hope not. Might just not bother and just get a performance one later on. I hope I find a restriction in the air intake though and it gives me a bit more mph!
-
..the thing you must keep in mind is, that if you significantly increase the flow of air into your carburetor, there's a chance you'll need to increase the size of your main jet...
-
ive taken out out something connected to the air filter, a funnel type thing?
it doesn't seem to do much but i thought that was what was meant by funnel in air filter, i'm not sure though, if anyone has a picture of what this actually is could you upload it please? also someone told me their super 8 4t had a restricter in the exhaust by private message if that helps?
-
..dunno why a 4t would have that in the exhaust...
..anything that you can remove from the air intake, that increases the tubing's diameter is a plus...
-
shall i take some pictures tomorrow to show what it is? i'm not sure if it does anything
-
..hell yeah!!..pics are very helpful..
..there's a lot of ppl here, from all around th' globe..
..terminology is different all over...
..pics tell all...
;D
-
ah okay thanks :)
as you can probably tell i''m new to this forum :D
oh as a reply to the thing you said about exhaust restrictors:
there is the variator restriction, the plate in the exhuast to hammer out and you need to change the jets aswell to let more fuel in. oh also forgot to mention he changed the gears too which made top end and acceleration better
this is definiately for the kymco super 8 4t
-
oh also forgot to mention he changed the gears too which made top end and acceleration better
..welll...that statement makes no sense to me...
..trust me, leave the OEM gy6 exhaust alone until you replace it...
..i'm speaking from experience...
8)
-
oh, sorry, he basically meant there was a small plate inside the exhaust he knocked off with a hammer.
but i'll take your word for that for now, thanks :D
-
...i know of a "washer" that's in the 2-stroke exhausts, that's kinda common...
..but i've never heard of one in a 4t...
-
yeah same, i think i'll have to look into it a bit more
-
...if you just gotta look, lol... be careful with the seal where the pipe bolts to the engine...
-
yeah my friend warned me that if the bolts are rusty and i try to take off the exhaust, they may snap off into the engine?
-
..true...then you got a 4t that can't run right...gotta keep that seal tight...
-
hm, so the best things to do are; variator, cdi, jets and maybe air filter funnel? are there any others?
-
...maybe a size up on the jet, as you do the cdi and variator..(do those first).. but not much until you install a free-flow air filter...
..
-
okay, around how much do they cost?
-
.....have you done ANY mods to your scoot yet?
..forgive me, but i would need to know your scoots history to say....
;D
-
I've just got the boot off the carb. It wasnt that stiff.. something tells me its been off before since when I got the scooter.. the CDI wire was already cut so I think he has tried de-restricting it also. There was nothing that restricts the air in tube where it connects to the carb when I took it off. Is it actually in the boot or in the carb? Because theres nothing really to report thats there ???
-
.....have you done ANY mods to your scoot yet?
..forgive me, but i would need to know your scoots history to say....
;D
it's okay :)
i've derestricted my CDI, that's all at the moment, i did take off a small connector from my air filter but apparently for that to actually work i need bigger jets, that's pretty much my whole bikes history :)
-
Shall I up jet my main jet to a size 82? Would this be too big or good for the job? This along with my performance clutch/variator what speed do you think I will get out of it?
Does anyone know the stanard size for the main jet?
-
i've heard it's 80 so 82 would be good, not too sure on it though, you're better off looking through your manual :)
well cdi variator and jets derestricted will get you to 45 so, about 50 i'm guessing?
-
Well what about a size 85 main jet. I've heard that works as well or would it be too much?
Here's what the manual says: "Main jet LIMIT SPEED：#K80 NOT LIMIT SPEED：K82". So the manual is saying limited size is 80 and upjetted will be size 82. So which should I order? 82 or 85?
-
you could try both if you wanted, but i'd suggest 82 if the stock size is 80, 85 will use fuel way too quickly, and it might not even do much more than 82
-
Yeah ok I will try 82. The actual size of the jet is 82.5 is that ok?
-
Hey all I would order both jets and An #87 also,gas milege should not be to bad,til you hit the #87 #90 #100.Once you start modding its hard to stop ;D Look inside the boot any thing smaller than the rubber would be restrictive.Once I opened my air and added a pipe I had to go from a #75 to an #95
-
So your saying an 87? What kind of speed would that give me with my Polini variator/clutch?
-
ahah, i will soon be drawn into the lethal addiction of modding ;)
yeah super, take art's advice too, 82.5 would be fine, i'm not sure how much the MPG would go down per size though.
-
Ah I no! Im not getting carried away though.. just doing the things I need to get 50+ ;D :D
My decisions have told me to go for size 85 :P Might as well do the job properly and get some improved performance!
-
I can't say for sure 50+ is common,You want to have a veriety of jets I always order 3.Your elevation,tempurture and weather can affect your performance,so what works for me may not work for you.With a veriety You can adjust for your scoot and not be stuck waiting on another jet.Try them all you might like one over the others and do yor plug chops
-
Ok thanks a lot for your help art ;)
I'll report back in just over a week when I shall have received all my parts and have them fitted!
-
good luck :D
-
Just trying to get more speed :P
Can you use Shell V-Power on a 50cc? Its high octane fuel. Just thinking it would give me better performance. But I've heard your not suppose to use it on 50's is this true?
-
super unleaded(high octane) isn't very good on any motorcycle really, just stick with normal unleaded, high octane will make your bike run horribly, i had to use it before because that's all the station had, big mistake.
-
Ok cheers. ;)
-
I use Shell V~Power in all my bikes, Suzuki Boulevard C50, Suzuki GS500, Kawasaki EX250, Kymco ZX50. They run well and that fuel improves fuel economy. The only down side is that it costs a bit more.
-
i thought for 250cc and under it just dropped performance for bikes, because it's too rich for the engines
-
I haven't heard anything like that, when I first started using it was on my Yamaha XV250, no problems there either. I think too low an octane rating will give problems. I don't know the specifics, only what I have tried. When I bought the Boulevard in Adelaide I filled up with normal unleaded, 91 ron, low fuel light was on @162km. Since using V~Power I am passing 200 without seeing the fuel light, the last time I saw it was a while ago and that was two up at 216 kms. If you are concered about using it you could try to find someone who knows more about it to fill you in on the details.
-
oh my dad as a kawasaki ninja 600, he seems to think high octane isn't very good on motorcycles, especially 50cc's, i've had both in my bike and how my bike runs when it is filled with high octane is much poorer to when it has standard octane.
-
I have to chime in here. Octane is equal to the flash point of the fuel. Hi octane takes more heat to ignite. Pre ignition is caused from fuel igniting before it is supposed to from the heat inside the combustion chamber. That burning fuel will prevent the stroke from continuing at its speed by exploding against the piston/head. The pinging noise you hear is the same as hitting the piston with a hammer. Sooooo Low octane fuel is the ENEMY of high compression, high revving air cooled engines. Everyone can have their own opinion, but the FACT is Hi octane fuel in our scoots is mandatory. If you want to put your scoot out behind the shed in a year or less by all means run regular fuel. If you want to run it for the next 5-7 years, before major repairs... Use the BEST fluids you can find. Gas/Oil/Brake Fluid ect.
-
I use Shell V~Power in all my bikes,
..my scoot runs like crap on anything lower than 93 octane..
..Shell V-Power is my fuel of choice....
8)
-
Right!! To the good stuff it is then :D
-
Yes, I use Shell V~Power when I can. In some towns if they don't have Shell they usually have a Caltex so I will use Vortex. In the car I just use normal unleaded 91ron as recommended by the manufacturer. 80 litre tank is a bit more expensive than a 15 or 20 litre tank. :-)
-
Yeah it is! Not so bad for me with a 6 litre tank :P My local Shell garage at the other end of town stocks V-Power so I'll start usng that from now on, see the difference in MPG.
-
my normal unleaded is 95, that's the best for my kymco s8 4t
-
Just want to stick my 10p's worth. My Super is fully derestricted and has an 85cc Big Bore Kit, Big valve matched head, high lift cam, 24mm carb with 105 jet, Naraku race variator and Dr pulley 9.5g sliding rollers, race clutch, 1500 torque spring and a Technigas freeflow exhaust. It will not go above 50mph because of the gearing and as of the time of writing this there is no gearup kit for this scoot. Kymco use their own final drive gears which are not standard GY6 gears. BUT..... it gets to 50mph very quickly!!! There are only three restrictions on the super 84t which are variator boss has a shoulder on it, main jet needs to go up a couple of sizes and CDI rev limiter... thats it nothing else! Hope that helps because anyone trying to break the 50mph magic number... best of luck! I think I should really have bought a 125cc :-)
-
Oh dear not very encouraging :-\
The latest update from me.. Order my Leo Vince exhaust.. a size 85 main jet.. race clutch.. Polini Speed Control variator along with around 6.3g rollers. My CDI wire is already cut so I should be doing 50+ Shouldn't I. If it doesnt after all that I'll be baffled??
-
not good "/ i have heard of changing the kymco gears though, so it's somehow possible (:
-
a size 85 main jet..
..might wanna think closer to 90-95 with that exhaust...
-
what size would i need for a k&m air filter?
-
Ya if your making that jump I'd order a #90 #95 #100 should put you in the right range,you may also have to go richer on your needle and pilot jets
-
i'm not getting a pipe though, just derestricted cdi and derestricted variator, then new jets but a new air filter too?
-
If you do the airfilter you will want to do the pipe also they kinda go together,more air in more air out.If you dont want to do the air you can increse airflo by drilling a hole in the air box.A 3/8" hole in front of the airfilter on the box worked great for my peoples 50 stock and an #85 main,if it don't work out for you you can plug it up with duct tape.
-
ah i'll forget the filter for now, what do you mean in front of the air filter?
-
What will happen if I stick with a size 85 main jet and Leo Vince exhaust?
-
Alchemy67, I don't know if the super 8 uses the same gears as the super 9, but in another thread Aeromyst had some gears that would fit only certain models. If you find the thread titled Cloud 9, I think it is in the super 9 section you may get some more info on it. :)
-
So I'll order a 95 and 100 jet. What type of MPG would I get with these sort of jets?
-
...the more mods you make, the less mpg you're gonna get...
..if you really are looking for the mpg, and not the mph...then leave it alone..
..don't do mods...
-
i'm not getting a pipe though, just derestricted cdi and derestricted variator, then
..okay......who got th' pipe..........
??? :o ??? :o ??? :o ??? :o ???
-
...i think we hijacked your thread luke...
..i know i got confused....
:-\
-
As for the hole in air box you want to put it usualy on the outer cover so air from the hole is not running straight to carb unfiltered.My bike went from around 70 mpg to 50 mpg with full mods.running too small a jet can kill your motor also if not jetted properly all the mods you have done will not perform as they were ment to.Once you get it dialed in you wont care about the milage so much thats the trade off ;D
-
...absolutely art...i bought my scoot new, and i got 95+mpg....at around 35 mph max speed....
..i'm maybe getting 45-50 mpg now...
-
Ya! I think I might be a little optimistic at the 50mpg ;D
-
..seems every mph sucks 3 mpgs....
-
Me, I've got the pipe :D
I just hope a 95 jet doesnt use too much fuel but enough to get by andget decent mph out of it, if it does that I'll be happy. :D
-
it's cool, i'm learning more here :D
i thought 95 would drop the mpg quite alot?
-
...itsa 35 mile round trip for me each day...plus what riding i do otherwise, and i fill up at least every other daay, sometimes every day...
-
Alchemy67, I don't know if the super 8 uses the same gears as the super 9, but in another thread Aeromyst had some gears that would fit only certain models. If you find the thread titled Cloud 9, I think it is in the super 9 section you may get some more info on it. :)
Na! Afraid they won't fit the super 8. My search goes on....
-
Just received my Polini variator this morning ;D
What a difference it has made! It came with 6.9g rollers which I think are a bit heavy so I've ordered 5.6g, will these give me good acceleraton but still keep my top end? My top end now is 70km/h 45mph. I hav still to up jet yet and put my Leo Vince exhaust and new clutch on.. but what a difference the variator has made! It's a different bike now! :P
-
when you do your pipe clutch and jets you'll need to most likely re adjust the veriater.If it justa little heavy 5.6 might be too much of a jump maybe a 6.0g You may need to go even heavyer than the 6.9 after mods.The pollini kit I got had the 5.6g also.You may want to wait till mods are complete to tune,and keep an eye on your spark plug!
-
Why what wll happen to the spark plug? If it bad they shoul change it on the service next week.
-
you need to do your plug chops to be sure you are not running to lean.the more mods you do the bigger the jets you need,if you run too lean it can damage your motor!
-
I wondered if any of you could tell me if the exhaust has a restriction in it here at the mount: (http://i609.photobucket.com/albums/tt178/waltonsteve/SNC00214.jpg)
It is welded on and it look to be restricting the flow. I dont know whether you can see if very well (camera ::))
When I got it it had a sticker on it but I ripped it off not reading it ::) It said something along the lines of.. "WARNING: The exhaust restriction had been removed" Or somthing like that I can't remember.
But I just wondered if this was a restriction, surely they would have removed it if they put that sticker on it ???
-
of it's a kymco super 8 4t, is it a plate?
-
if*
-
It's from my new Leo Vince exhaust.. I dont know whether it is a restricton or not ???
I need a bit of help.. I've just got it fitted and it sounds great! It really does!! But theres just one query I have.. it backfire's with a tiny flame out the end of the exhaust upon deceleration. Is this normal for the exhaust? Or is something not right?? Does anybody know :( ???
-
oh, it'll be derestricted already, what size jets do you have? i have a friend who's exhaust does that but it's pretty old
-
I've not upjetted yet still standard 80. It will be done next week. Is that the problem do you think? I have a 82.5 jet and a 95 jet.
-
that would be my guess, have you done the variator yet?
it's probably something to do with not enough fuel getting through
-
Yeah I've done the variator now and that has made the biggest difference so far if ur looking to get a bit more speed I'd recommend it: http://www.adrenalin-pedstop.co.uk/p/POLINI-VARIATOR-SPEED-CONTROL--2992.aspx (http://www.adrenalin-pedstop.co.uk/p/POLINI-VARIATOR-SPEED-CONTROL--2992.aspx)
But yeah I think that maybe the problem my engine running to lean. I will turn the idle mixture screw tomorrow and try to make the mixture more rich because apparently the mixture is too lean and letting in too much air and so that's why it backfires.
-
ah thanks :)
what is the acceleration & speed difference like?
and are you running on unleaded or super unleaded?
-
The variator came with 6.9g rollers which are no good for acceleration so I've ordered 5.6g so I'll let you knowwhat their like. But at the moment with the standard 6.9g rollers acceleraton is not good at all.. really.. wen you hit 31mph.. the powerbnd kicks in and wisks you up to 40mph quite quickly. Mine sticks at 40mph up a hill gradient.. up really steep hills it sticks at 30mph.. but lighter rollers are needed to get better accleration.. but the top end is great.. I get 70km/h - 45mph on a straight flat at the tops. Just a bigger jet thats needed now to get even better speed ;D
I used super unleaded a few days ago in the hope that it would clean my engine out a bit.. it probably has.. it feels a bit more smoother.. but its no different performance wise.. I'm using normal unleaded again now.. I will put super unleaded in every few weeks or so I think.
-
Its real hard to tell from the pict, but is the end of the pipe the same size as the rest of it? It looks like a cone in the end there. You can use a dremel tool to grind some of the material away if you need to. Also I run ONLY high test fuel, and would recommend the same for you. The backfire is due to fuel in the pipe igniting, and is quite normal for any four stroke engine. Last but not least you HAVE to rely on plug chops to set the jetting. I would certainly go up. Try the 95 first, and you can always go back if needed.
-
Yeah it is a funnel cone shape. It is spot welded onto the side body of the exhaut pipe. Will it not just chisel out?
-
Is the backfire really normal? It says in the manual that if it backfires on deceleration then its because the engine is too lean which I've heard isnt good. I've tried adjusting the idle mixture screw, I turned it clockwise to richen the mixture and the idle speed increased which it is supposed to but it still backfire from time to time, its just when you have been travelling at 30-40mph and yu let you of the throttle quickly it backfires. ???
-
Yeah I've done the variator now and that has made the biggest difference so far if ur looking to get a bit more speed I'd recommend it: http://www.adrenalin-pedstop.co.uk/p/POLINI-VARIATOR-SPEED-CONTROL--2992.aspx (http://www.adrenalin-pedstop.co.uk/p/POLINI-VARIATOR-SPEED-CONTROL--2992.aspx)
But yeah I think that maybe the problem my engine running to lean. I will turn the idle mixture screw tomorrow and try to make the mixture more rich because apparently the mixture is too lean and letting in too much air and so that's why it backfires.
The idle mixture screw does just that... Idle mixture. It doesn't change the mixture under normal running. The only way to change the mixture and colour of your plug is a jet swop combined with maybe a freeflow filter.
-
Turning the screw clockwise LEANS the idle mixture. If you do the 95 main jet, and do a plug chop you will know better how much more jet you need. Adjust the idle mix screw to the highest rpm's you can get, and then turn it 1/4 turn counter clockwise. That is the cioorct setting. Once you get that right use the slide stop screw to adjust for the proper idle rpm's. The spot welds may just pop out w/ a chisel, but you would be better off using a dremel tool or a drill to remove most of the weld before trying to bang them out.
-
I thought turning the screw in (clockwise) richened the mixture and turning it out (counter clockwise) leaned the mixture. So it is the opposite way around?
-
Regardless Follow Zombie"s advise.It's the proper setting for your idle mix it does not affect the rest of throttle responce.You should not run at wot untill you have installed the bigger main jets!removing the cone at this point will most likely make the condition worse(leaner)Be carefull!
-
...clockwise makes the mix lean...
-
My bike is going in for it's service in the morning... I will give them my 95 jet so they can change it over. Do any of you think 95 is a good choice considering my Leo Vince exhaust and upjetting from stanard 80??
-
It's a good start,the plug read is the only way to get it right.
-
Right.. the garage sorted all my problems including my idling problem.. it was the exhaust emmissions system that had a kink in it and was being caught by the center stand.. anyway that has been bypassed now so it has no emmission control system. New spark plug has been put in as well as new oil and a good general check and adjustment of the carburetor. He tried the 95 jet but apparently it ran awful in mid-range so he put in a 82 jet. It is great now.. really smooth. But the exhaust is still restricted.. that is the only restricton on the bike now.. if I remove the cone in the head.. will I need to upjet?
-
Need to learn to read your plugs,Thought you said you were doing the airbox also #95 good start there an #85 good start with the pipe opened up only.All these mods will increase your air flow,the more air you move the larger the jets you will need.