So I am currently running a 3.0 pulley on my Maggie, but sadly I am making a lot of belt dust so I can only imagine I am still getting belt slip. I have already fabricated a pulley under the snout to add in more belt wrap as well as 100mm pulleys and have done as much as I can except for a RIP cut pulley. I cant find one or even who would make one so that I can hopefully end this saga of slip without going 8rib on such a small blower. Where did you guys get yours from in the past?

And I was also thinking about this while working on the car, I still have the Evap purge solenoid mounted to the intake plenum of the blower but it wobbles around an awful lot. Would this be a location that I could be losing much important boost? I thought about ordering a block off plate as I tuned out the solenoid and has nothing currently connected to it.

Thanks in advance.

 

I'm currently running a 2.8 RIP cut pulley on my 112 with the two 100mm idlers. I still have some belt slip but not nearly as much belt dust building up, I ordered my 2.8 online and had a local machine shop cut it for me as I couldn't find anyone selling them either

 

I ran a 2.9 for about 5 years without any belt slip? What size and brand of belt are you running? How much boost are you seeing on the gauge or scanner?

 

I would suggest the first thing to change should be the overdrive crank pulley. I had a supercharger years ago, but I think I got my 2.6" pulley from Pulley Boys. I had to custom order it. I think there was a supercharger pulley for a ford that had the same size shaft that offered a 2.6". I would think you could have used spacers or a lathe to make fit properly for alignment. If I was doing it again, I would go that route. I know adding the idler for belt wrap helped a lot.

 

Can't comment on EVAP cause mine is hooked up but I'm running 2.8" with 100mm idlers at 8 lbs with no issues.

 

I'm running the gates fleet runner green back belt and a HD tensioner. I'm seeing 9psi on my gauge at WOT.

I've tried to cure this over the years swapping from a gator back belt, adding the additional idler and HD tensioner. My supercharger pulley is ridiculously smooth so I'm thinking no matter the wrap on the snout it's the pulley.

I don't see how an overdrive pulley is going to help me in any way with this either, I'm content at how hard I'm spinning the blower right now.

I don't know if it being in front of a T56 is part of when it could be slipping or not, I can't hear the belt slip bit the evidence is hard to not notice with the dust.

Pic of my snout and setup.

 

When I say first thing to change is the overdrive crank pulley I mean when you are working from a completely stock setup. If you increase the crank pulley size it will turn the supercharger faster and you will still have the same amount of surface area on the supercharger pulley. I had the same extra idler on my setup when I had a supercharger on the first design. It definitely helped.

 

I also added a 100mm pulley on my HD tensioner