by Jan Knobbe
Going into the new year, we thought it would be interesting to look at how far technology as come over the years we have been upgrading engines. We opened in 2005, and a lot has changed over the past 18 years!
Fifteen years ago we were working on twin cam and evo engines. Engine upgrades often included valve jobs and hand porting. We took 88 cubic inch motors to 96 cubic inches or 96 cubic inches to 103 cubic inches. Big builds then produced 110 cubic inches to 117 cubic inches.
Now we are working with twin cams and M8s. Engine upgrades often include CNC porting of heads; air research benches to see what the air flow is; big valves and four valve heads. Technology in cam shafts have progressed. Cam shafts now allow more air in and out of cylinders causing much better cooling of exhaust chambers which then increase horsepower with less octane detonation.
M8s have come a long way in five years with two over and four over valves along with CNC porting heads. This allows almost doubling what the air flow is in the factory head. With the M8 cam configuration of a single cam there is less drag on the cam chest which allows freeing up of horsepower very different from the factory twin cam. M8 standard upgrades are 107 cubic inches to 124 cubic inches and 114/117 cubic inches to 128 cubic inches. These upgrades are dependable daily drivers. We know this because we have modified our personal bikes. Major engine upgrades can exceed 155 cubic inches.
Years ago 88 cubic inch motors were built up to 96 making maybe 95 horsepower. Now factory motors are 107 cubic inches and 114 cubic inches making 100 horsepower. When built up to 155 cubic inches they make 200 horsepower at the ground. There are also pro chargers and turbo chargers available for you gear heads.
The evolution of motors is never ending. There are always better and smarter ways of gaining horsepower. We are proud of our efforts to stay current and knowledgeable about what is out on the market so that we can continue to provide the best possible service to our customers. We work with each individual customer to fit their needs.
If you’re interested in making some changes, come talk to Jan to see what modifications will work for you and your machine. Call us at 636-775-1385 and ask about our January engine upgrade specials.