Supercharger rebuild

[Haltech 6]

Hi I am in the middle of rebuilding the supercharger off my L67 the rotor blades are quite dark and look a bit burnt almost, how do i know if I need to get them recoated.
cheers Chris

 

[Immortality]

Sounds like a buildup of oil and crap from the PCV system. If the rotor coating is coming off you would see shiny alloy.

Got a pic?

 

[Haltech 6]

I have taken some photos 2 of before I cleaned the rotors and 2 from after I have cleaned the rotors

 

[KustomKulture62]

Do the blades wear out or just the bearings and seal stuff.

 

[Immortality]

The rotors don't really wear out but the coating does tend to come off with age unless of course there is a major bearing failure which allows the rotors to touch the casing or each other in which case things would be stuffed.

 

[EYY]

They look alright. Apparently the rotors are teflon coated. It's very noticeable when they chip as it shows the bright aluminium underneath. I had a couple of l67 chargers here a while ago, and one had some play in the snout and the rotors were able to touch/rattle against eachother and had worn off a fair bit of the coating. The other one was tight and had no noticeable wear like your one - I wouldn't hesitate to reuse those as-is.