Here's Nose Drive Bearing Part Numbers (1st gen S/C)
04-25-2004, 10:51 AM
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Here's Nose Drive Bearing Part Numbers (1st gen S/C)
Just an FYI for all the do-it-yourselfers out there:
Instead of just shelling out $170 for a remanufactured nose drive, I figured I'd do a littel research. I assumed that all a new nose drive was, is an old one with new bearings and seal, boxed with some special gasket compound and oil. So I decided to bite the bullett and tear mine a part to see what could be done. You see, we have a local bearing shop that has every bearing ever made, so I figured that odds were in my favor.
After pulling it apart this is what I found:
UPDATE:
Front Bearing P/N: NSK 6204 ($3.71)
Front Oil Seal P/N: CR 7965 ($3.25)
Rear Bearing P/N: NSK 6303 ($6.27)
Lockrite Gasket Maker: ($6.00) - Anaerobic - 'for aluminum'
*4oz S/C Oil: ($7.00 )
*Any GM parts dealer, Info courtesy of Magnuson.
TOTAL cost for complete nose drive rebuild...PRICELESS (Under $30.00)
I actually got Koyo replacement bearings, I'll UPDATE with the proper cross reference P/N's later today.
UPDATE:
It looks like the model numbers are the same for Koyo and NSK, like somebody else mentioned.
I hope somebody else can benefit from this info, Enjoy!!
Instead of just shelling out $170 for a remanufactured nose drive, I figured I'd do a littel research. I assumed that all a new nose drive was, is an old one with new bearings and seal, boxed with some special gasket compound and oil. So I decided to bite the bullett and tear mine a part to see what could be done. You see, we have a local bearing shop that has every bearing ever made, so I figured that odds were in my favor.
After pulling it apart this is what I found:
UPDATE:
Front Bearing P/N: NSK 6204 ($3.71)
Front Oil Seal P/N: CR 7965 ($3.25)
Rear Bearing P/N: NSK 6303 ($6.27)
Lockrite Gasket Maker: ($6.00) - Anaerobic - 'for aluminum'
*4oz S/C Oil: ($7.00 )
*Any GM parts dealer, Info courtesy of Magnuson.
TOTAL cost for complete nose drive rebuild...PRICELESS (Under $30.00)
I actually got Koyo replacement bearings, I'll UPDATE with the proper cross reference P/N's later today.
UPDATE:
It looks like the model numbers are the same for Koyo and NSK, like somebody else mentioned.
I hope somebody else can benefit from this info, Enjoy!!
Last edited by yoda-g2; 04-27-2004 at 09:06 AM.
04-25-2004, 09:04 PM
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Yup, but with a socket, an BFH, and a little TLC, you can tap them out no problem. 
We didn't bother using the press, I just get nervous when I can't tell how much pressure is where, just imagine cracking that aluminum housing :pat:
We didn't bother using the press, I just get nervous when I can't tell how much pressure is where, just imagine cracking that aluminum housing :pat:
04-25-2004, 09:29 PM
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Originally Posted by yoda-g2
I actually got Koyo replacement bearings, I'll UPDATE with the proper cross reference P/N's later today.
Originally Posted by yoda-g2
.... just imagine cracking that aluminum housing :pat:
Last edited by toy283; 04-25-2004 at 09:32 PM.
04-26-2004, 03:39 AM
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Originally Posted by yoda-g2
Yup, but with a socket, an BFH, and a little TLC, you can tap them out no problem. We didn't bother using the press, I just get nervous when I can't tell how much pressure is where, just imagine cracking that aluminum housing :pat:
We didn't bother using the press, I just get nervous when I can't tell how much pressure is where, just imagine cracking that aluminum housing :pat:Might cost you a few $$$ though.
04-26-2004, 08:31 AM
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Yeah, it wouldn't be the end of the world if something happened, you'd just lose your core deposit. I just wanted to point out that you can still do this yourself even if you don't have access to a press. That might scare some people off from trying it.
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04-26-2004, 03:50 PM
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Originally Posted by mhawker
Great info Yoda-g2! You should do a full write up with pics.
Mike
Mike
Please help us all out and do a writeup and submit it to Corey for posting in the tech section.
04-27-2004, 09:12 AM
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I updated the part and price info.
:pat: Ok, don't hate me, I didn't have my digi cam when I took this all apart, and now it is nicely installed on my S/C, which is on my rig... :pat: I should've thought about a write up. Sorry I'm not worthy to be a YT member.
To redeem myself though, if someone is thinking of doing this, they can mail me their nose drive and I'll happily do the swap for them, and do a write up. Any takers???? Mine was a 1st gen S/C, but I assume that the 2nd gens should be just as easy.
Let me know!
:pat: Ok, don't hate me, I didn't have my digi cam when I took this all apart, and now it is nicely installed on my S/C, which is on my rig... :pat: I should've thought about a write up. Sorry I'm not worthy to be a YT member.
To redeem myself though, if someone is thinking of doing this, they can mail me their nose drive and I'll happily do the swap for them, and do a write up. Any takers???? Mine was a 1st gen S/C, but I assume that the 2nd gens should be just as easy.
Let me know!
04-27-2004, 02:32 PM
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Originally Posted by yoda-g2
*4oz S/C Oil: ($7.00 )
*Any GM parts dealer, Info courtesy of Magnuson.
*Any GM parts dealer, Info courtesy of Magnuson.
04-27-2004, 05:12 PM
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Originally Posted by toy283
What's so special about this oil? My supercharger uses standard 75w-90 gear oil.
Originally Posted by Gadget
Good work!
What is a good source for the seal?
Gadget
What is a good source for the seal?
Gadget
Thanks, the seal is from a local bearing specialty store, I don't think they do internet ordering though, I could act as a middle man if anyone is interested in purchasing some.
04-27-2004, 06:13 PM
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Some superchargers use engine oil. Some use gear oil. Some are tapped into the engines oil system.
The Eaton superchargers have a sealed gear box and they use a special synthetic oil that has about the same consistancy as water. The GM dealer is the best cheapest place to get it from.
Gadget
The Eaton superchargers have a sealed gear box and they use a special synthetic oil that has about the same consistancy as water. The GM dealer is the best cheapest place to get it from.
Gadget
04-28-2004, 08:57 AM
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no luck
Originally Posted by mhawker
PS For anyone interested, I did a write up on how to change the nose drive without removing the SC. Do a search on my name and nose drive to find it.
10-27-2007, 11:56 AM
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I know this is an Old thread..... but does anyone know if replacement bearings and replacment numbers are the same for the 2nd Gen S/C as for the first? I'm about to replace my bearings in my 2nd Gen (makes a bad bearing sound) and wanted to use these part number references...
