tokumei
09-07-2004, 05:23 PM
Hey guys. It's been awhile since I posted here. I think the last time was the day before I bought my icy blue 2004 Vino, which was about 3 months ago or so. Since then, I've but almost 2,500 miles on it with no major problems. It cruises around 40 right now. Although be warned, this will obviously reduce your gas mileage down to about 70 miles per tank, but still... that's not bad at all when you hear how much some SUV drivers pay to fill up their tank.
First of all, I'd like to give a shoutout to my scooter mechanic Al who took the time off form his busy schedule to lend me a hand. Not to mention the fact that he did most of the work. Thanks dude.
Okay, I'm going to try to outline this as best as I can. You don't have to do these in any particular order really, it's just to make it easy to navigate. The main thing we tried to do was increase the amount of air and fuel entering the chamber by adjusting the carburator and the airbox. Here's what we did.
1) Derestricted the exhaust - Okay, this one is a no-brainer. This is what's going to give you your biggest boost in power. There are plenty of guides on this site that give you the facts, so I won't go into much detail.
2) Removed the snorkel on the airbox - Since I've noticed that a stock Vino prefers to run lean, this will actually lower your performance unless you've adjusted your carburator at the same time. After pulling out the rubber tube, we used a grinder to open the hole up a little more and fitted a rubber ring inside which still had an interior diameter much larger than the pipe. I'd say its about 1+1/4" to 1+1/2".
3) Adjusted the fuel needle in the carburator: Al took the liberty of removing the carburator and pulled out the fuel needle so he could raise the disc on the needle one level above the stock setting. This allows more fuel to enter the engine.
4) Widening the jet: This is a simple step. While you still have your carburator removed, take out the jet and use a screw drill to widen it. We opening mine up about 5/1000ths of an inch. Try not to open it up too much, although if you do, you can pick another one up from your local bike shop without too much hassle.
5) Adjusted the air/fuel screw on the carburator: This is the last step, in which you find the perfect balance between the large amount of air and fuel which will be entering the engine. This will vary depending on your personal scooter. All you need to do is turn it a quarter inch in one direction and give it a test run, keeping in mind which direction you turned it and how many rotations you did. I'd start with about half a turn counter clockwise and if it gets worse, return it to the stock position and give it a half turn in the other direction. Once you find a good balance between your acceleration and the highest top speed you can manage, you're done!
If anyone has any comments or improvements to this plan, post it up.
Take it with ease guys.
~tokumei
First of all, I'd like to give a shoutout to my scooter mechanic Al who took the time off form his busy schedule to lend me a hand. Not to mention the fact that he did most of the work. Thanks dude.
Okay, I'm going to try to outline this as best as I can. You don't have to do these in any particular order really, it's just to make it easy to navigate. The main thing we tried to do was increase the amount of air and fuel entering the chamber by adjusting the carburator and the airbox. Here's what we did.
1) Derestricted the exhaust - Okay, this one is a no-brainer. This is what's going to give you your biggest boost in power. There are plenty of guides on this site that give you the facts, so I won't go into much detail.
2) Removed the snorkel on the airbox - Since I've noticed that a stock Vino prefers to run lean, this will actually lower your performance unless you've adjusted your carburator at the same time. After pulling out the rubber tube, we used a grinder to open the hole up a little more and fitted a rubber ring inside which still had an interior diameter much larger than the pipe. I'd say its about 1+1/4" to 1+1/2".
3) Adjusted the fuel needle in the carburator: Al took the liberty of removing the carburator and pulled out the fuel needle so he could raise the disc on the needle one level above the stock setting. This allows more fuel to enter the engine.
4) Widening the jet: This is a simple step. While you still have your carburator removed, take out the jet and use a screw drill to widen it. We opening mine up about 5/1000ths of an inch. Try not to open it up too much, although if you do, you can pick another one up from your local bike shop without too much hassle.
5) Adjusted the air/fuel screw on the carburator: This is the last step, in which you find the perfect balance between the large amount of air and fuel which will be entering the engine. This will vary depending on your personal scooter. All you need to do is turn it a quarter inch in one direction and give it a test run, keeping in mind which direction you turned it and how many rotations you did. I'd start with about half a turn counter clockwise and if it gets worse, return it to the stock position and give it a half turn in the other direction. Once you find a good balance between your acceleration and the highest top speed you can manage, you're done!
If anyone has any comments or improvements to this plan, post it up.
Take it with ease guys.
~tokumei