Yeah, this LS one has a bunch of ports as well, I figure I'll just be going wild with a pipe tap and plugging them all. The blower itself isn't lacking for random ports drilled in it either. :doh:
I see what you're saying now, if the engine rolled backwards or something faster than the tensioner could react it wouldn't take much for the belt to get crooked on one of those flat
pulleys pretty easily. Cool deal, I'll go ahead and plan to incorporate a pulley with the flanged OD opposite the tensioner side of the belt.
On the actuator I actually used, and still have, a variable pressure switch and 12v air spool I used to actuate my external wastegate on my twins. No real reason for it, I just found it easier/cleaner to run wires than air hoses, but it wasn't bad to work with. Probably be a quick, easy way for me to get things working.
Honestly, for the work and RPMs this thing sees I may not need a bypass at all. I'm still going to leave room for it in the piping though, just in case.