How.com.vn is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 13 people, some anonymous, worked to edit and improve it over time.
This article has been viewed 68,911 times.
If you have a mini Baja 6.5 hp from Canadian Tire, you may be wondering how you can get it to go over 70 miles per hour (110 km/h). Do you own one of these bikes and wish you could keep up to a real dirt bike? With these few minor modifications your minibike can be doing speeds of over 70 mph (110 km/h) in no time. Read on to learn everything you need to know about improving the speed and performance of your minibike.
Steps
Take off the rear fender, headlight, mock gas tank, and the clutch and chain cover.
Go to your local TSC store or farming supplies store and buy #40 or #41 roller chain.Advertisement
Remove the two chains’ master links, using a flat screwdriver or needle-nosed pliers.
Remove clutch by taking off the snap ring and loosening off the bolt. Slide the clutch off the engine shaft.
Remove the gear reduction on the motor by removing the bolts that hold it to the block.
Put the clutch back on, only this time with the sprocket facing the motor.
Take the new chain and put it around the two sprockets so the end and the middle of the chain are touching on the back sprocket.
Using a chain breaker or a hammer and nail set, remove the pin from where the chain needs to be cut.
Attach the chain together with the included connecting or master link and tighten the chain.
You can now reattach the clutch cover.
Remove the throttle cable from its stock mounting spot and mount it to the arm under the gas tank or directly to the carburetor. This by-passes the governor, allowing your motor to rev higher and have more power.
Unbolt the muffler baffle, unbolt the stock muffler and cut off the mounting flange with about an inch of tube left on it.
Get a piece of pipe the same dimensions as what is left on the exhaust mounting flange. Cut the pipe so it is at the right angle that it will clear the motor components and the frame etc.
Weld a piece of pipe that has the same wall thickness and fits over the other pipe with about 4 mm extra clearance.
Center it on the pipe and weld it onto the pipe.
Using a half inch round file smooth the inside of the pipes where they join together.
Grind the end of the larger pipe off on an angle for appearance.
Bolt the exhaust back on.
Take off the stock air filter by removing the top wing nut and unscrew the air filter housing.
Replace the air filter with a K & N style air filter or similar.Advertisement
Expert Q&A
Tips
- Always use new lock washers, connecting links, snap rings. Lock tight every bolt or nut you replace to prevent future problems or parts from falling off.Thanks
- In the end you are left with one chain instead of two, and you put the clutch on backwards so that the chain lines up with the sprocket.Thanks
- For the exhaust, the ratio of thinner pipe to the thicker pipe should be about 6:3 for the best appearance and should be around 6 to 8 inches (15.2 to 20.3 cm) long.Thanks
Warnings
- Wear protective gear.Thanks
- Always wear a helmet.Thanks
- Always check that every bolt is on tightly and replace with a new ones if possible because the bolts, washers and lock washers on this bike are not the best quality available.Thanks
- Don’t go any faster than you can handle.Thanks
- Don’t drive on public roads where it is not permitted.Thanks
Things You'll Need
- chain breaker
- 10 foot (3.0 m) bundle of chain
- wrenches or socket set
- arc welding equipment
- grinder
- ½ inch round file
- needle-nosed pliers
- flathead screwdriver
- air filter
- small quantity of pipe (about 12 inches)
- 15 lock washers
Did this article help you?
⚠️ Disclaimer:
Content from Wiki How English language website. Text is available under the Creative Commons Attribution-Share Alike License; additional terms may apply.
Wiki How does not encourage the violation of any laws, and cannot be responsible for any violations of such laws, should you link to this domain, or use, reproduce, or republish the information contained herein.
- - A few of these subjects are frequently censored by educational, governmental, corporate, parental and other filtering schemes.
- - Some articles may contain names, images, artworks or descriptions of events that some cultures restrict access to
- - Please note: Wiki How does not give you opinion about the law, or advice about medical. If you need specific advice (for example, medical, legal, financial or risk management), please seek a professional who is licensed or knowledgeable in that area.
- - Readers should not judge the importance of topics based on their coverage on Wiki How, nor think a topic is important just because it is the subject of a Wiki article.
