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I have found that the 93 jet is optimal at this altitude. I believe that jet was legal in the CJKC back when I had a JR1 racing. The factory jet is a bit rich here and could foul the plug if the float is higher than normal. Minor adjustments with the needle and float level are allowed in the LO206 rules. raise the needle on cool days and lower on hot.
Here is a good article on growing the sport of karting.
I want to share from our experience and other accounts about the cost of LO206. The LO206 when run by the Briggs rule set along with a long lasting spec tire is a very good combination. This has been proven in Canada and in other areas around this country. The LO206 was one of the largest classes at the Rock Island Grand Prix this year (49 racers in Medium and Heavy). Most racers are able to run competitively from out of the box and for up to 3 years with proper oil changes and lapping the valves after every season AND are top finishers from year 1 to 3. Complete packages from mount to exhaust to clutch can be found for $700-$800. If you mess up and need a just a new engine, they are around $550. The sealed short block if you can replace it yourself is around $250. Much less expensive than any other engine, even a clone package (cost of these are getting out of hand out east because of rule sets). With this package, there is minimal gain to be found in tweaking the engine. We and most others have found the most gain in setup and driving skills (practice). This is why the CJKC went with the LO206 for the JR1 class and the Kid Kart class (JR LO206)
Lots of information can be found online:
https://www.briggsandstratton.com/engines-racing/racing-engines/local-option-206
http://karting.4cycle.com/forumdisplay.php?f=152
http://ekartingnews.com/forums/forum/briggs-stratton-4-cycle-racing/@David Fedler wrote:
A LO206 costs the least but is actually rather expensive to run competitively over a season.
David, Please explain how this would be true. I have never heard anyone say this package can cost anywhere near the cost of any other kart specific engine.
From a racing dad and mom who put 2 kids on the track for several years, we don’t race anymore for two reasons, Cost (the main reason) and time. My oldest grew out of the CJKC and the next step was TAG (Takes Another Grand) or Shifter. This would require lots of money and the time to put it all together properly for race day. I honestly did get tired of those really late Saturday nights getting everything set for a very early Sunday morning. My younger son was not into racing as much and he simply said it was OK to not run when we were trying to decide this past year. For me, I always wanted to race but had no time or money for the 3rd kart. I almost started racing with the Briggs Mod guys back in 07 (guys and gal with those noisy karts blatting around the track then high fiveing each other after the race) but the very next year, they were done.
Grassroots racing does not exist in Colorado any longer. The Briggs Animal got us racing in ’06 and the LO206/World Formula kept us on the track with the CJKC. Its too bad there is not a place for adults to race at this level. I always got the impression that the “Briggs guy” was looked down upon.
Would we do “rental racing”? Maybe, depends on how much it costs.
Would we do “Arrive and drive” Probably not
Would we race an LO206 or World Formula class. Possibly if Sunday morning, Probably if it could be some evening. Yes these engines are slower than TAG but so is a rental and everyone else would be relatively the same speed.
Would we race ever race TAG or Shifter? Wish we could but No. Simply too expensive on equipment and tires and could never spend more money on TAG engine than a small block chevy would cost me.@richardhensley wrote:
Les,
Are you going to build one and race on Sunday?
Probably not, I saw this post only a few days ago and I have not worked on a kart for me for quite a while. I will have to get one ready just in case since the interest in an affordable class may start getting some traction. I was for a World Formula class for adults several years ago when the kids were racing and I had a kart to run around the track with them on practice day, but TAGS and shifters were in style and the slow 4 cycles were not. I think what most forget is close racing is fun racing and close racing can be had without spending thousands. I think if a bunch of folks do get on the track with an LO206, Animal or comparable clone engine, they may be surprised how much fun you can have. Good luck guys, I which I had more time to get ready and join in.
Les
Hmm, I think I have enough stuff in the garage to build 3 karts.
If you have an old chassis, Brad has one of these kits on ebay:
I believe it includes clutch mount, pipe everything except the axle sprocket. I believe it is a much better engine and better deal than the ARC kit.
LO206 is the way to go. Stay tuned to this thread on EKN. Rob Howden is trying out the LO206 at the Rock Island Grand Prix. http://ekartingnews.com/forums/topic/ekn-lo206-project-racing/
@[email protected] wrote:
Haven’t karted in a while, and many here are more qualified, but my first thought was magneto.
A bad coil or spark plug could miss-fire at high cylinder pressures when at full throttle. I would not rule out either. Does your rpm gauge still give you a reading when it cuts out?
Alright! Now 2 choices for an affordable class for the 12-15 year olds. The CJKC and IMI Club series. The World Formula is an affordable and reliable engine for this class. Just change the oil and fill the gas tank, and it is a T.A.G!
For those that cannot afford TAG for your Jr, Give it a try, I think you will really enjoy this engine.
From 2 years ago 😀
@Les Prins wrote:
For us, the JR2 animal class was that affordable class for us last year and we were hoping to continue with it this year. I think a World Formula class would even be better than the JR2 Animal with less maintenance (with a rev limiter and it runs gas).
The new Micromax package sounds good but is just too expensive for us in upfront costs. We simply cannot afford it.
Will there be any other options for next year in Jr1?
How about a factory sealed 4cycle engine, rev limited to 6100 rpm? Total package costs around 700 bucks + mount,chain and sprockets. Bolt it on and run all year. It is run nationwide like so you can easily sell it if you need to. Lots of good things being said around the nation about this motor, very close and fun racing. Just a thought for the club level racer. Equal engines at minimal cost and no need for builder blueprinting for your son/daughter to run up front.
@Greg Welch wrote:
I still remember 1997 pulling around 250 entrants for a club race.
Back then, what were the classes like? What was the most popular class for adults and Jr’s?
Just curious.
MIkey, I know someone who maybe can borrow you a kart, you may need to have a few set of tires handy, they would only last 10 laps…..70 hp
Looks and sounds like this: http://www.performancevtwins.com/
Doug, I would rather run a World Formula or Animal engine with that type of chassis. A box stock clone would be painfully slow on our sprint tracks and I would not trust the stock flywheels with the governor removed either. The magnet has been known to come off and I don’t want my family to be anywhere near it if it does.
The clone are around 100 bucks when on sale. Usually around 160. Add in the labor needed to be done to make it race ready, a safer flywheel, and the clutch, you are now getting closer to what the new Animals cost. There is a new Briggs Animal motor that is factory sealed at the bottom end with a 6100 rev limiter to make a good box stock class for around $480. The info is here if anyone would like to check it out http://news.briggsandstratton.com/racing/index.cfm?ms_id=81&
I’m still waiting for someone to start a less expensive class for Sr’s and the 12-15 age group that can’t afford an expensive TAG or shifter kart and new tires every few races. I know we can’t afford to go a 12 race season with a TAG Jr and Jr1. Faster more expensive karts may be exciting but it is not the answer for keeping the existing racers, getting new people into the sport, and former racers back IMHO. I think with the price of fuel and money getting tight, there will be even fewer racers next year.
We are looking forward to MAYBE running less demanding schedule at The Track next year to save money and is a closer track for us. We will have to see what Jim’s club series is offering for classes and make our decision then.
