What also would probably work would be a dual tensioner set up, where you would have a second tensioner on the other side of the blower. That would take up the slack that occurs on deceleration. You can see on a motorcycle chain what happens. When the rider shuts the throttle, the top portion of the chain between the sprockets goes from tight to producing waves, and the bottom gets tight.

 

Not sure how small you could make them:





I think my main issue was that the crank and blower pulleys were out of alignment by a whole rib (blower pulleys further forward). Will see what happens when I get the pulleys back.

 

Wow. I invented it two hours ago, and ATI stole my idea and put it into production that quick!

 

I was talking about the plug and play adapter.

 

Mercedes benz has been doing this for a while.

 

X-Link by DrX/Torque Rush of course. Secondary throttle controller and injector drivers by TRP as well.

 

Had .114 machined off the backs of the 3.0" pulleys. Everything appears to line up now. Played around with the tensioner position a bit. Looks like even with not much load the belt stretch consumes most of the tensioner's travel capacity. If it hits the stop, and it was close in this vid, the 2 sections of the belt that are moving in opposite directions will likekly come into contact.

 

Wow, that's a bit close for comfort especially since there's still a little bit left travel left in that tensioner. That might be why your shredding belts too right? Where you go from here, what pulley you gonna move?

 

Cool video. That explains a lot. Damn that belt stretches! For a quick fix you could put a stop bolt into the idler bracket to stop the tensioner right before it contacts the idler. Put then it may unload the belt and cause some slip at high boost.
Could you clock the tension back (CCW) so that the minimum stop is more to the passenger side and a shorter belt?

 

how hard was it to use dual TB's?? I have been thinking dual 78's would be better than a single 100mm...is there a special adapter??