And just like that we forgot all about Porting Blowers and turned all our attention to Cylinder # 5. I read a post today about port matching to the blower speed from Brett with Jokers that I thought was interesting and figured I would share it for those of you not on Facebook.

"My idea I had to do with opening up the rotor inlet face in the shape of the rotor profile in relation to the outlet. We went to a depth in the inlet that had a relationship with the outlet. This gives us our inlet duration in relation to the outlet. We later found out after a couple years of studying this inlet will work as LONG AS THE CORRECT RPM IS MATCHED TO INLET DURATION. What's this mean? The amount you port at the rotor face has to match a specific rpm in order to achieve an optimal efficiency range. To much port work will still make power over stock but you are robbing yourself of horsepower of up to 50+ HP and TQ if your not running the correct blower in correlation to port work. Simple saying to remember is more port work takes more horsepower and torque to turn the blower. You may ask the question “can I just spin it harder?”. The answer is yes but what becomes a restriction next, a cooling issue possibly or maybe some broken parts? When you push a supercharger harder you need to make sure your inlet volume is sufficient, make sure your intercooler system is ready for extra heat, throttle body size is adequate, flow post blower is willing to accept the extra air, and most importantly the parts inside the blower taking a toll. For example most of our base ports we sell will work at all levels on a car. I would never sell a high end port job to someone going for a 10% increase in HP cause it will absolutely kill power and wont be beneficial to your needs. Simply put you can make more HP with less pulley keeping the blower cooler and more efficient for a longer period of time".

"There is a range of rpm in every blower platform in which you can range your port work. Would you rather have a complete power band or one peak number that is flat below the curve and barely pulls to rpm? Well I have the answer for that. Our new race ports now utilize the proper duration of inlet duration based on that persons blower rpm. We ask you your pulley combo and we port the blower to your pulley combo. We tailor your blower for your application resulting in the best possible performance for your car. Note if the port work is tailored for a specific blower rpm DOES NOT MEAN it wont work with other pulley combos. However I would not go selling a guy with a .10 smaller pulley then stock a race package port!
My ideas worked by hand but couldn't be brought to their full potential unless a CNC could help profile, remove and design the inlet material I wanted or needed. I want to thank LMT for the talent they bring to my business".