Methanol water Injection Supercharger DOUBLE-SEALED Cup type Needle Bearing pair

Description

The High Speed Lab Supercharger Shop
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e custom pulleys we make.
Check out the picture of our custom pulley in this item. Pulley shown is not included in this item purchase. The one pictured may not be the exact one available for this vehicle.
This listing is for a PAIR of
THSL brand
True Double-seal cup-type needle bearings, factory pre-greased.
(2)
Premium THSL brand true double-seal needle bearing pair, 1mm longer. Install sub-flush below surface of interior housing face that the bearing is being pressed into in the supercharger housing. This upgrade is a better choice bearing for water/methanol injection equipped vehicle (2) [*This is the Optional upgrade from our Quality THSL Single-seal needle bearings]
Eaton superchargers use two needle bearings, one on each rotor shaft.  Some of them are cup-type, just like the PAIR in this item listing.
If you plan to replace both, purchase ONE ITEM (1) to receive a pair.
THIS IS NOT A HOLE THROUGH NEEDLE BEARING.
We have Hole-through needle bearings available but, this is not the item listing to purchase if you want a Hole-through bearing such as those found in some Jaguar Eaton superchargers. Contact us for the hole-through type needle bearing.
IMPORTANT DETAILS:
Note ( use extra caution on blind bearing holes )
This true double-sealed needle bearing is 1mm wider/longer than some cup-type bearings it replaces.
The Eaton supercharger case hole is typically 23.2mm deep in the G3 M45,62,90 & 112 hole through housing.
This leaves about 1.5mm or .050" clearance.
Use caution with blind bearing bores such as the G3 M62 & 90 used commonly on 2000 & earlier GM cars.
When installed the cup bearing must not protrude must be sub-flush in bearing hole.
Original Eaton Cup Type needle bearing dimension 17mm ID 23.8mm OD 20mm W or long.
This double-seal Supercharger Cup Type needle bearing 17mm ID 23.8mm OD 22.4mm W or long.
See pictures show a cup bearing being removed from a 96 GM supercharger and this double-seal cup-type needle bearing installed.
The pictures also show a double-seal cup-type needle bearing with a black circle around it.
The bearing is about .5mm or .020" in the bearing hole.
This is a blind bearing hole in this picture.
The grease gun & tool is how I remove a bearing from a blind hole.
This THSL brand needle bearing is replacement for both the F390978 and FC65477 because this eBay item is an upgrade with the change from a single-seal to a double-seal.
This bearing is an upgraded replacement.
I prefer this type because it is what I use in my supercharger rebuild services when the customer wants an upgraded needle bearing installed.
It is a better choice if alternative fuels like Methanol injection are being used because the purpose of the true double seal design is to keep liquids out of needle bearings.
These needle bearings must be installed sub-flush to the interior face of the housing. Improper installation can lead to contact by the rotor(s) on the needle bearing face and ultimately cause damage to and failure of the supercharger. This can be avoided by installing the needle bearing correctly, sub-flush to the face of the rotor cavity on the inside of the housing. Although we can not warranty your work, if you get in over your head, you have another choice. You can have these professional installed if you decide this is not a service you are prepared to perform. Contact us for a quote.
Needle bearing part numbers this item replaces directly:
INA FC65477 USA
INA F390978 USA
If you can't seem to find what you need, please ask questions.  Whenever possible, send cellular phone quality photographs to help our Shop Foreman identify what you are working with.  We understand that it can be tough to make sure this item is exactly what you need.  With pictures, our Shop Foreman will be able assist you to help make sure you buy what you need.
If you are interested in buying a quantity larger than a US Postal small flat rate shipping box can hold, please email to request a total.
Thank you for your interest!
The High Speed Lab Supercharger Shop
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