Briggs & Stratton Lo206 Engine Cam Shaft Spark Timing Pro 8" Degree Wheel KB. This degree wheel is specifically made for the Briggs Lo206 Engine, One side has the intake numbers, the other side has the exhaust numbers. You start with the intake numbers. To use this degree wheel you pop off the orange side cover off and install the red expander to the flywheel cup, tighten it up at top dead center with your pointer and you are ready to degree your cam to find out if you got a good one or a turd. the wheel is marked with starting point and all the numbers in green and the black lines on either side is the amount you allowed out - the first and last number you are allowed 8 degrees. Here is a short video to explain - Briggs Cam Explained! Here is a short video to explain - Briggs Lo206 Kart Racing Cam Timing Explained Here is a short video to explain -how to adjust cam timing! Some builders find the good engines on expensive dyno's or take them to the track and run one after another and the best engine builders use the truth degree wheel - if the numbers fall on the favorable side you got a good one. If you want to know if you got a good one this is the way to do it. We all know there are fast and slow engines - but what makes one faster than another from the manufacturing of briggs - its the CAM SHAFT. take apart 100 of these engines and you will find the manufacturing nearly all the same except on one piece - the cam shaft. This item is cast and then the pile goes into the oven for heat treating and they warp and move all over the place - big and small, twisted and warped and many are right in the middle of the spec and some are turds and some outstanding. Briggs and Dan Roche know all about the problem - call and ask him. Its luck of the draw - you could be sitting on the golden ticket or a pile, this wheel will tell you what you have and then we can move on to the rule book and the areas of engineering to make the most out of that engine. The degree wheel is the first step. We all know the Briggs lo206 engines are the same until the engine builders get done with the little performance tricks and this is the biggest of them all, cam calibration. Briggs gives a cam spec but the window is huge. 8 degrees on the first number and 4 degrees on every other number but you can still have numbers out so that's 6 degrees. It only take 2 degrees to make a rocket and this will allow you to get it to the favorable side. I have tried to get the rules to be tightened to within 1/2 degree for over 2 years now and Briggs wont do it so now what a few select engine builders are giving out, i will give to everyone. yes you want .006 at 51. that is the direction! Calibrate away and get some speed.
