Proper torque sequence for blower-to intake bolts?
Can someone tell me the proper torque sequence for the supercharger-to-intake bolts? Possibly with a pic? I unfortuneately have a wicked vaccum leak and aweful whistling noise (and a hissing) and I think it'* due to the fact that I just winged it putting the blower back on. Runs fine except around idle, and whistles REALLY LOUD just above idle, so I know it'* a vaccum leak.
The book (at least the one I have here while that filcher DrJay has my FSM'* in WA) says nothing. So standard rules apply. I've done 2 now, and I use a random pattern at 1/2 torque, then a zigzag up and back, every other one, front to rear at full torque.
I too couldn't find any thing in any of the manuals except GM does say:
Supercharger to lower Intake is to be torqued to 19 ft.lb
Boost Control Solenoid to Bypass Actuator to 22 ft.lb
and Bypass Actuator to Supercharger is torqued to 22 ft.lb
but no pattern is indicated, so when I did my */C I torqued from the center out in a crossing pattern in three steps 10 lb 15 lb then 19 ft.lb
6 2 4
3 1 5
this is a standard rule of thumb for torque patterns if they are not indicated in a manual and should tighten even over the mating areas.
TIP: don't forget those yellow coolant passage o-rings