I am considering adding a larger pulley to my combination in order to make up for boost loss at altitude. I am looking for opinions. I know the standard call of max pulley combos are 2.8/4lb or 2.93/6lb. I am considering going with a 2.8/8lb. Now before I get flamed hear me out...
Let's examine a Turbo combination for a second. Turbo cars do not lose boost at altitude, the wastegate controls the boost and the turbo is not fixed to the motor so it simply spins faster to make up for the thinner air. Now our supercharged engines can not do this because the ratio is fixed. While i realize this may put the blower out of efficiency range it is really no greater stress on the motor. If a 2.8/4 lb sees 16-17 at sea level but only sees 12-13 up here, than changing to a 8lb lower up here should put the motor right back where it was at sea level (or close to). Thoughts?....
Let's examine a Turbo combination for a second. Turbo cars do not lose boost at altitude, the wastegate controls the boost and the turbo is not fixed to the motor so it simply spins faster to make up for the thinner air. Now our supercharged engines can not do this because the ratio is fixed. While i realize this may put the blower out of efficiency range it is really no greater stress on the motor. If a 2.8/4 lb sees 16-17 at sea level but only sees 12-13 up here, than changing to a 8lb lower up here should put the motor right back where it was at sea level (or close to). Thoughts?....
