Ok, so here is my problem. I purchased the BilletFlow idler pulley to eliminate my belt slippage. Very quality part and installed very easy. Thanks to Doug for another great product and regardless of my results, this product clearly is a tremendous improvement in belt wrap.
Every post I have seen says this part eliminated their slippage but I have a different experience. I have a 2.80 upper and no lower. The first belt I tried was a gatorback 73.5 which took up all the adjustment on the tensioner. I couldn't wait to try out my car with my new part. I ran the car hard in several gears and at 5000 RPM's my boost starts to fall and by the time I am to 6000 RPM's the boost is barely holding at 10 (around 13 before 5K). I thought maybe my belt might be the problem since it had been on and slipping for about 1K miles so I replaced it with a slightly longer Gatorback (the tensioner is now in the middle). The results were the same. I wiped clean all the areas around the upper pulley and made a few high RPM runs, with both belts there was new belt residue.
Doug at BilletFlow was nice enough to call me on Saturday when he heard about my problem but he insists I am the only person with this problem. He said he spoke to Rick @ Amazon and he was running a 2.70 upper with absolutely no slippage (I think he also said Rick had a lower on as well but don't quote me).
I am hoping some of the experts here might be able to suggest some possibilities as to why I am the only person with slippage. I can see how there might be very minor belt slippage but there should not be enough to loose 3lbs, should there? Is there something else that could account for the loss of boost at high rpm's (overspining, altitude……..)?
Thank you in advance for taking the time to share your thoughts.
Every post I have seen says this part eliminated their slippage but I have a different experience. I have a 2.80 upper and no lower. The first belt I tried was a gatorback 73.5 which took up all the adjustment on the tensioner. I couldn't wait to try out my car with my new part. I ran the car hard in several gears and at 5000 RPM's my boost starts to fall and by the time I am to 6000 RPM's the boost is barely holding at 10 (around 13 before 5K). I thought maybe my belt might be the problem since it had been on and slipping for about 1K miles so I replaced it with a slightly longer Gatorback (the tensioner is now in the middle). The results were the same. I wiped clean all the areas around the upper pulley and made a few high RPM runs, with both belts there was new belt residue.
Doug at BilletFlow was nice enough to call me on Saturday when he heard about my problem but he insists I am the only person with this problem. He said he spoke to Rick @ Amazon and he was running a 2.70 upper with absolutely no slippage (I think he also said Rick had a lower on as well but don't quote me).
I am hoping some of the experts here might be able to suggest some possibilities as to why I am the only person with slippage. I can see how there might be very minor belt slippage but there should not be enough to loose 3lbs, should there? Is there something else that could account for the loss of boost at high rpm's (overspining, altitude……..)?
Thank you in advance for taking the time to share your thoughts.