GEN 1 Supercharger rebuild

[Sunchaser]

Looking for some advice from any and all high mileage supercharged gen 1s (or maybe even anybody who knows a lot about whipples) i recently purchased a new to me gen 1 raptor. Great truck but its recently started making some bearing noise coming from the whipple. I will be sending it out soon (80k supercharged miles) and i was talking to the supercharger rebuilder and they were saying at this mileage the rotors could need to be recoated. The price difference between bearings and bearings + coating was significant, how neccessary is this coating? I couldnt care less if im losing some efficiency but if there is a chance it can ruin the whipple ill do it. Just looking for some clarification on this as i keep finding conflicting info. Thanks!

 

[pcs]

what supercharger are you running? the coatings on the rotor packs does increase efficiency. you can run “naked” rotor. how much more is it to coat them?

 

[Sunchaser]

Its the 2.9L whipple specifically for the 6.2L engine. Bearings (stage 1 rebuild) around 700$. Bearings + coating (stage 3) was around 2500-3500$ depending on rotor condition

 

[Sunchaser]

Im really curious about roush blowers because it seems like there is more of them out there and high mileage ones at that. Wondering if they have to go through a similar process.