Welp, I hit exactly 170k miles and the supercharger appears to have gone out. BAS/ASR light and CE light came on and it's pretty noisy. Looks like I have some fluid splash from somewhere and my belt is getting cooked (could smell it in the cabin).
Here's a video:
Question: Should I have the Eaton rebuilt or just replace? I thought there was some rebuild kits available on-line. What would you guys recommend in this situation? Are there any decent repair kits available or no?
These are Lysholm screw compressors (inventor, Alf Lysholm, maker, Eaton) and they run with very close tolerances. Rebuilding is eminently possible, as long as they are in working order. If they (like yours) have bearings that are worn down so they mesh the rotors, they may be beyond repair. Remachining the rotors to specs may even be impossible vithout adding material - a specialist job (precision milling and teflon coating will be needed. So, removing the compressor is neccessary as a first step, and depending on internal damage, it can be Schrott
and a rebuilt compressor may also be more expensive if your worn out compressor isn't rebuildable and can returned.
But a rebuild may be a smart thing to do if you a) are lucky and your own unit is rebuildable or b) can source a used, undamaged compressor for a good price. (I don't know what a rebuilt compressor is at your place, but if the cost is in the ballbark of the cost for a used compressor, a rebuild set and 4-6 hours of labor, it's decent.
The rebuild sets (see Ebay, there are several and other cars use the same compressor) have new bearings (needle rollers inside, roller bearings outside, new drive and the special lube oil that goes with it "for life". Skilled home mechanics can do this, ON A FUNCTIONAL UNIT! - if they have access to a hydraulic press for the inner bearings - it's not really hard or complicated, and with new parts and a worn compressor will be "like new" more or less.
If you get a warrantied preowned unit and don't rebuild, make sure you change oil in it, and even relubricate the needle bearings, to give it a sporting chance to survive.