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I just finished replacing my supercharger bearing and wanted to share some information to anyone who is attempting the replacement themselves. I ordered a new bearing off ebay (link below) and was very pleased with the shipping speed and quality. More product reviews to come since I'm doing a lot of maintenance in the coming weeks.
Tools Required:
15/16in open ended wrench
17mm socket with breaker bar
Bearing driver kit (can be borrowed from AutoZone/O'Reilly)
Blue Thread Locker
The replacement took me about 30-45 minutes
To get the new bearing inside the pulley I placed the bearing inside my freezer for 6-8 hours to let the metal contract. Doing this allows you to slide the bearing inside the pulley with little to no force and eliminates the need for a bearing press. Additionally, you can place the pulley (after removing the old bearing) in the oven at 250F for a few minutes to allow the metal to expand which makes the installation easier. I took the time to sand the clutch side of the pulley a little with some low grit sand paper to make for better engagement with the supercharger. I also removed one of the 3 shims and noticed a smoother engagement with NO SQUEAKING ANYMORE (hallelujah). PM me with any questions if you need help.
One question did you heat the pulley and cool the new bearing or just cool the bearing to instal?
Nice write up. Thanks for posting.
I came back from a ~30 mile drive so my pulley was pretty hot already, so hot I had to use gloves actually. You dont need to get it red hot in the oven, just hot enough to not be able to hold it with your bare hands. Hope this helps!
There might be a cheaper source out there but I wanted to guinea pig the eBay bearings and see if theyre legit. They claim to be genuine Nachi and as shown in the pictures they are! I paid $56.98 with free shipping from Sacramento and recieved them within 2 days. I wouldnt trust a generic brand bearing but if anyone would like to be the guinea pig on those Id like to see how they hold up.
I used a generic Bearing from bearingsdirect about 125k ago and its still working fine... i think i paid $30 for it....there is a lot of misconception about this bearing....a lot of people think it spins at the the same speed as the supercharger but it does not. when engaged it does not spin at all since it locks the spindle to the pulley and since the supercharger engages above ~2500 rpm it will never spin more than that unless you "cruise" at 120+ mph which i dont think anybody in this country does...and even then the supercharger will only be turned by the air rushing through the blades which will be a lot less then 5000 rpm.
10-17-2017, 08:06 PM
