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The new TAG 4-stroke class will be using the three new 250cc engines just approved by TAGUSA. The new Biland, Oral and Vampire. The engines are 34HP 13,000 rpm. They will run at 400lbs if run in one class. There will be weights for a Senior and Masters class which may run 370/410. There will be front brakes only for 4-stroke.
Your shifter chassis would work fine for this class Freeze.
Freeze, front brakes yes!
I don’t think a Jr1 should be using a 15hp World Formula engine and yes it probably would last twice as long at 6000rpm, maybe even the whole summer!
We have taken apart many Honda’s and measured them and they are very consistent but we still must check every engine to be sure they are the same and correct them if necessary.
We have sold and built Briggs engines since IMI has been in business and will still support them in the future. It is my opinion that the Honda is a better investment for the future of the sport at the Jr level.
It is also my opinion that nationally karting has suffered from the same rules that you support for Briggs. Their rules make karting more complex and expensive, this is one of the main reasons that karting has not been able to ever grow beyond a certain level. There has to be some part of this sport that is inexpensive to get into and inexpensive to run, especially for children. The rules have always left too much room for experimenting and blueprinting which results in the added financial ?competition? element to the formula.
There have been hundreds of customers in my shop looking to get into the sport with their children and the two most common objections are cost and complexity. If we can offer a package, which is inexpensive to purchase, low maintenance and simple to understand and operate, the objections will be overcome. This will also keep people in the sport longer when they are having fun being competitive without having to spend money on the engine every week.The Honda engine for Jr1 is a GX200 which will be using a Tillotson carb with linkage, EC Birt manifold, Mikuni fuel pump, K&N style air filter, RLV stainless exhaust with muffler, 2-Disk adjustable clutch, engine mount, Each engine is disassembled, governor removed and then they are measured and matched for cylinder to piston height, head CC. The valves are adjusted, manifold matched to head, ignition clearance set. Then they are inspected and side cover, head and valve cover bolts sealed by the tech director. You will be able to adjust the carb and clutch only with no modifications allowed on either. We have decided to use the rope start instead of the onboard electric to keep the cost down. You may add a starter nut if you wish to use a hand held starter. The gear ratio will be set for each track to keep the rpm below 6000. The lap times are comparable to the Comer 80. The price to purchase the package is $850 and will be available from most kart shops in Colorado. You will also be able to rent an engine package by the race for $35 or you can sign a contract to lease purchase a new engine package and keep it on your kart for $75 per month for 12 months. This is the same engine which we use for kart rentals with a different carb, manifold, exhaust and clutch. The engines will not have a problem with the valve train when used below 6000 rpm. We have over ten years of experience with the Honda and it is the most reliable engine for this class. We run them hard for three or four years before we work on them.
Freeze, (the original Briggs aficionado)
If Briggs really knew what they were doing they would not have to make so many changes to their engines. How many versions of the flat head and Animal are out there? They still have not figured out that the screws that hold the exhaust to the head are too small along with all of the other weaknesses like no two engines are built the same. What has Briggs ever done for Colorado racing in way of support or anything for that matter?
I am not looking for the cutting edge, fastest cart on the track right now, I am looking for reliable first.
The TAG 4-strokes are the cutting edge, they are fast on the track and they are the most reliable.
Biland rebuild is $875 complete and you only have to do it every 200-300 hours. That is about 4-5 years of racing and practice. You will have to change the cam belt every 50 hours, 15 minutes to do it $11 for the belt. Change oil and filter every 10 hours, $13 with oil.
The New Biland is $4275, Oral $4375, Vampire $4575, TKM $3000 Aixro XR-50 rotary $5500
Engines4racing is the North American importer for all of the engines with parts and engines instock. We are the only service center at this time. (Engines4racing is owned by IMI Motorsports)
303-833-4949 http://www.engines4racing.com will be online next week.
Rotaxian
2-strokes will always be cheaper to buy but in the short term. When you add up the rebuilds you will have to do the price of the 4-stroke is just about the same in the long run. And you will not have to have a spare engine in the trailer. The future of karting is the 4-stroke and it is coming sooner than you think.
Garrick
Leopard is the most popular 2-stroke engine in the USA for TAG. Rotax is the second most popular, I will figure it out too. Rotax should be about $100 more.
Leopard parts for complete rebuild
Piston and ring $107.53
Pin $ 20.78
Needle bearing $ 29.53
Clips $2.18
Rod kit $288.68
Main bearings $43.74
Seals $21.88
Base gasket $2.96
Outer Head oring $3.28
Inner Head oring $5.47
4 Stud orings $4.36Total parts $530.39
Labor $250.00
Total for just engine
Rebuild, no clutch parts $780.39Biland 250cc 4-stroke. 200-300 hours before rebuild. I have new and used engines in stock. Biland has been the most reliable TAG kart engine in the market for the last 5 years. IMI Motorsports 303-833-4949
Won 1st place TAG Masters TAGUSA World Finals 2007
1st place TAG Masters SKUSA SuperNats 2007I am sure that everyone coming will have their own agenda; I know I have mine and George has his. George will have his chance to pitch the WKA just as much as we will talk about the CSC and club races. We are not even at the meeting and George wants to shelf any talk about the CSC. Like it or not George the CSC is the most succesful karting program in this state and its success is the result of cooperation between members of this panel. All of the issues between the CSC, club races and kart shops are interrelated and we should and will address all of them. There is no need to have separate meetings for each of these concerns. There have been plenty of private conversations between many involved parties over the past few months going over the major concerns of karting in Colorado. I look forward to hearing input from the racers and hope that we can work together to accommodate the majority of them with our final decisions. The karting scene in Colorado is not broken and in dire straights; it only needs a few tweaks as we go along to make things better. I do not think we need to start over from scratch with a whole new program like you do George.
Eddy,
The majority of the racers do not even know all of the options. That is purpose of this meeting to introduce all of the possibilties. The discussion has just begun for most people in this group and it is to early to come to any conclusions.
I don?t think there was one of my customers that attended the two private meetings that Scott had arraigned. All of those who attended are Comer 80 racers. If you think that a class that uses an engine that will cost $1500-$2500 or more to be competitive is the answer than you are lying to yourself. The Comer group has thoroughly thought out what is best for them, not for the rest of the group. The group of Comer racers you are referring to are not my customers they are your customers George. Five racers have asked for this engine package, not 34. Many of those listed are Briggs racers and I am sure they will not include themselves in the Comer crowd. If you used Honda engines for 20 years then you should be supporting the only engine that has been available that would suit all of the racers needs. You can put a seal on a Comer 80 and you will be sealing in the pitfalls of this engine and will never achieve parity between engines. The Comer is not consistent between engines and to seal them without blueprinting and expect parity is a joke. If you blueprint all of them you are adding to the cost big time and still not achieve parity. The same is true for the Briggs. Honda is the only engine for JR?s that has been used in racing which can achieve parity between engines without spending a fortune. The Honda engine has been used successfully in Canada and England for over a decade with written rules with a limited amount of blueprinting. The voices of five people have been heard and to insinuate that this is the consensus of all of the racers is deceiving. There are no masses that support this concept they are proposing in Colorado. There are many looking for an answer for JR?s and to leave out all of the options and falsely conclude that the Comer 80 is the answer by this biased meeting is a sham. There was not one Comer 80 that was competitive that was low budget and stock.
