I have the 3.12 pully and im getting 9.5-10 psi @7000 rpm

defenetly belt slippage, I would bet money on it. Even if it dosnt squeek it dosnt mean its not slipping @ high rpms.

 

you will be able to hear the bearings grind on the assembly. get a metal tool and put it next to it and the other end to your ear. You can tighten the belt tensioner till you think its not going to go anymore. when you push down on the belt, the center of it should not go down at all but it will want to bend on the edges of the belt.

 

im not crazy enough to take mine to 7000 rpm, I have a non rev up motor.

looks like i need to get the timrod setup going on

 

well i tightend mine down pretty good and took the cog belt off so i could just hear the jackshaft and pulleys and it is silent so that is a good sign. On another note my cog tensioner pulley is getting pretty loud, I probably need to replace it because I have been driving with it installed wrong

 

Dont worry to much about it . They seems to get louder with time . There is a lot of things that can effect the PSI the blower makes .

 

i figured the bearing in it was going out in that pulley. I was just going to buy another one for $37, the kit was used anyways.

 

Listen to the bearings grind?. At what amplitude or frequency of the grinding do you believe it to be correct?

Tighten the belt tensioner till you think its not going to go anymore...Any idea about tq #?

you push down on the belt , the center should not go down.. What part of the belt are you referring to to find the center?

Is this in the Vortech manual... My point is Vortech should have provided the appropriate data in there install manual rather than leaving it to the customer to try to figure it out...