Eaton M112 supercharger clang sound

[dpancer]

I noticed when I took the blower off the car there was slight contact of the rotors. As I rotate the gears back and forth you can hear a slight clang and the rotors rubbing a bit. This blower has about 20,000 miles on it. It doesn’t feel like there is any side-to-side play in the rotors when I have my hand on them and rotate them a bit. Could this be the needle-bearings, with so little miles (stock pulley was removed for 2.76 50 miles ago only)?

I have searched quite a bit and have not found a vid with the similar problem. I'm hoping some Eaton experts can quickly diagnose this for me.

Here is a video I recorded last night right after I put it back together.

03 Cobra Eaton M112 Clang/Noise/ Rotor contact - YouTube

 

[pittguy]

What's the coupler look like. very common for the plastic coupler holes to start oblonging .

 

[dpancer]

coupler is 100%, that was the first thing i checked when i took it apart. but in the video i was spinning directly from the gears with the snout off.


I guess I should add that when the blower was on the car it made no noticeable sound. It felt like it was performing well and holding boost perfectly.