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We offer five levels of motors currently in both C50/C51 and K80. The first level is a standard C50 prepared to run fast. It could be newer or only slightly used. The second is an engine that has shown good signs in testing or at the track and is reformatted to run fast. The last is an engine that either has won regionally or nationally or has the head casting traits that make it a winner. The rest are sorted and ranked by performance into the levels shown below. As you go up in investment it is not a linear power curve, you are simply getting a few more tenths on the track, a few hundred more rpm and a few tenths more horsepower or a better dyno curve for racing. Our motors are not highly machined motors. They are an investment because they are hard to find and time consuming to test, but because they are gifted and set up correctly you are passing people on the track legally. There is much satisfaction in a win where you pass everyone and get checked thoroughly in tech. When you are declared the winner in tech and everyone walks away scratching their heads that's very satisfying because you and your driver did it within the rules. Some people have asked for a guarantee that they will pass tech. This is impossible to do for several reasons. First we can't guarantee that someone else doesn't modify the engine after it leaves here. We once had a customer take one of our engines and lap other engines we produced. That same customer was later DQ'd for head work. It is hard to see how one of our engines could lap other engines we produced. The other reason is that parts break and can cause a DQ. Tech directors can also make mistakes. The best thing to do is to ask for your engine or component to be held in tech if you receive a DQ. Ask for it to be sent up the ladder of IKF or WKA. Often local tech directors can read a discoloration in a port as port work when they just haven't seen enough of them to know. There are very few things as painful as receiving a DQ in a big race. We do everything on our end to make sure it doesn't happen. In the end it will always be your responsibility to assure that your engine passes tech. The best way to do this is to ask a tech director to look at your engine prior to a race - most are willing to do this happily and they are not very busy before racing begins.
Special Notes: Tornado Kid Kart Engines Lead R7 and R11 of IKF Kid Kart racing out West is the toughest in the world. Last year we won the regional title with Braden Johnson flying in from Illinois for each race. We put three other drivers on the final podium too. This year with many fewer drivers we are still successful in holding down the Region 11 title with Chloe St. George in a perfect season of all wins. Cruz Fiore hold the coveted Region 7 points lead after winning the opening race and finishing on the podium in all the other races.
The
Mustang - $1099
These are the brand new Comer C51 cc engines with a standard rebuild. Since these are new engines turnaround time is only a couple weeks and many times we have them in stock and ready to ship. Much improved over the last two years engines, we add to the engine by properly preparing the engine for racing.
The
Falcon
This is our entry level race motor. Great for club racing and even some regional races. It is a used old style C50 motor that has been gone through and set up for high end power. This motor will outperform all legal newer c51 motors and run competitively with the best old motors. If you race under the new C51 only rules please specify you want a C51.
The Hornet
The Stealth This engine will sneak up on the competition and drive by before they knew what hit them. These motors are hard to find select head castings that simply perform superior to other motors. Hand selected and carefully reconfigured to perform at the top of the regional races and national events. We have a few motors that have already won a national race or regional title and are proven to produce power in the key rpm bandwidths to allow for passing with equally talented drivers. Stealth engines can take up to 22 weeks or longer to locate and build. It is like finding a needle in a haystack. If you place an order for one you can't change your mind or get your money back. We will deliver the engine when ready. If you race under the new C51 only rules please specify you want a C51.
The Super Stealth Our highest level engine and the most time consuming to produce. The building and dyno process can take several days spread over a few weeks. Often times the process can push a part to it's limits and we have to replace the part and rebuild. This is not for everyone as it is a large investment in materials and time. It is the pinnacle of the C50 engine development business and the amount of R&D that is included in each engine is significant. The engine is broken in on a special purpose $10,000 5" small 2 cycle water brake dyno that is computer controlled and monitored. The air in the dyno room is monitored and horsepower ratings are adjusted by the climate computer. Other dynos may be used to test different components as well as other testing of components. Some people think this level of detail is too much, others want attention to details by a specialist or engineer with knowledge of the engines.
The A
10 Warthog Dirt Racing Motor
The B2
Stock new C51 Kid Kart engines $645. $25 added for shipping. Stock Comer C51 shipped to your front door. Click the button below to order on line or call us today!
Mustang - $999 + shipping - Click the button below to order online or call us today!
The Falcon $1295 to $1475 - Click the button below to order online or call us today!
The Hornet $1690 to $1975 - E-mail us your location and goals, we'll help select the engine - Click the button below to order online or call us today!
The Stealth $1975 and up - Give us a call and we'll select the best engine for your goals. These engines usually take about 3 months to find and build. - Click the button below to order online or call us today!
Super Stealth - $2585 - These are the rare serial numbers that are hard to find but then we focus extra attention on all the details. It takes a while so the sooner you order the better. C51 Super Stealths are usually 1 to 6 months delivery time depending on the order and seasonal backlog. The dyno time is include in the investment total. These engines are built, run in, tested and then rebuilt again until they reach the top level of performance. Heat and cryo treating of these engine components add about three weeks to the process, each process could ruin the part or engine and then we'll have to start over again. When done you'll have a top notch engine.
Dyno Room Engineering - If you want to find the specific best set up for your driver, engine and chassis combination invest in Dyno room time. We charge $175 an hour for engineering time and $125 an hour for break in time. We average that out to a daily rate of $900. We've had many clients find good power by giving us the investment of a second engine to put into dyno testing of new ideas. We are creative thinkers and trained engineers not just machinist or karting enthusiasts. One day of dyno room testing specific to your engine or series. We'll find the right combination and power!
On Track Support - I get asked to come help people at the track. I rarely if ever do it except for our factory drivers. It is $120 an hour for my race weekend time. A minimum eight hours is required plus expenses, flights, meals and hotel. I charge $30/hour for travel time. All has to be paid two weeks in advance to schedule time. I did this for one national champion and it secured his place as national champion. Strategy, set up options, rebuilds, protests and coaching are all included. Hopefully the videos can get you to the front and our track support is the last thing you'll need.
The B2 Grey $1775 - Built to basic standards for the international market.
The B2 Red $2199 and up - Built for top racers facing tough international competition. The price includes scientific treatments of components and dynamometer testing time to tune for your region and altitude.
The B2 Gold -$2475 - This is an engine with every advantage we can give it. From cryo treating certain parts to heat treating others. We build the engine to exact standards and dyno test it. We start with the best head that we can find after viewing many looking for the correct port height, size and shape. After viewing your rules we then make the engine better. Alignment of the crank case halves and the base so the engine can rev freely. Our focus is on creating horsepower at the top end of the RPM range where it counts on a fixed gear class. If you don't run a fixed gear we'll build it for peak horsepower.
We accept credit cards through our paypal.com account. Just log into www.paypal.com and select mail@tornadodriver.com as the person to pay and we'll get started. Call us at (916)390-6474 with any questions. We have a few motors ready in advance some times but many times you'll need to order and give us a few weeks to get everything ready, tested and shipped. Shipping and handling are $19 plus $8 for insurance. Overnight shipping is usually $90 for UPS and $55 for US Mail (not guaranteed). Race engines do not have warranties. Once you place the order and pay for the engine it is your engine and can't be canceled or returned for a refund. Well meaning people can and do forget to put oil in gas, drop engines or run them with the wrong plugs. Even if the engine has a problem after the first day it can't be returned because there is no guarantee or warranty on race engines. No engine can be guaranteed to pass tech, because they can break, be modified once they leave our shop or be read incorrectly by a tech director - we build them to technical standards. This is standard policy in the motorsports industry. We know the race engines are in good shape when they leave here. The old style C50 engines can take a while to find and build. We ship when they are done - once ordered you can't get a refund. If you refuse shipment we'll hold the engine or chassis 3 weeks, if you don't take shipment it will be donated to a charitable organization that helps young racers get a start. Please make sure you are prepared to accept these conditions before you purchase. For many individuals this is their first motor sports performance purchase.
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Copyright © 2008 TornadoDriver All videos sold on this site are single use only licenses and can't be sold, given or transferred to other people.
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After
eight years of testing and sorting Comer C50 and C51 engines we have
come up with a formula for finding the best motors and preparing
them for race day. The methods used are legal for IKF, Stars, WKA
and most other groups. It is a combination of several small details
and searching for the motors with the best potential. No two motors
are the same. Two motors can be only ten serial numbers apart yet .3
horsepower different. 
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