Quote:
Originally Posted by 86TOYO2k17
A positive displacement like harrop, edlebrock, cosworth, sprintex they can make a lot of boost down low very quickly and instantly as soon as you get on it no waiting time but become less efficient top end... but that instantaneous low end torque is also what snaps rods.
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This is a bit misleading since you didn't also mention it as a con for turbos. A properly sized turbo makes target boost at an earlier RPM than PD superchargers and present more danger to the rods. PD chargers need rpm to increase boost too.
Also didn't see mention of the potential for turbo install/maintenance issues that can result is boost spikes. Boost spikes can destroy an engine quickly and gear-driven chargers don't have that exposure.