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Supercharger Knocks

G

gloryabides

New member
I am working on a 1997 Pontiac Grand Prix GTP 3800 supercharged.
The intake started leaking water and I had to replace it. Before I started working on the car, I noticed a knock coming from the top side.
When I took the supercharger off, and partially cleaned it, I noticed when I spun the shaft, the impellers were knocking together.
After I reinstalled it and got the car running again, the knock is still there. Now that I know what the knock is, is there a overhaul kit made to overhaul the supercharger?
Or is there something else I Can Do?
Any help in this matter would be appreciated
 


Replace coupler, re-seal, new fluids dumped in, enjoy...99.9% of the time the "knocking" you hear sounds like tumbling rocks at idle and goes away whenever you gave it throttle...it's the coupler...which connects the pulley/snout shaft to the pair of rotors. You can also try re-packing the needle bearings in the back of the case when you slide the rotors out.
 
blueguy91 said:
Replace coupler, re-seal, new fluids dumped in, enjoy...99.9% of the time the "knocking" you hear sounds like tumbling rocks at idle and goes away whenever you gave it throttle...it's the coupler...which connects the pulley/snout shaft to the pair of rotors. You can also try re-packing the needle bearings in the back of the case when you slide the rotors out.
Click to expand...

Like you know anything about blowers...
 
Thanks,
Replaced coupling and that fixed the problem.
Didn't pull rotors out to pack needle bearings.
No more rocks!!!
Thanks again.
 
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