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Thread: HOW TO Big block hubs with machined hubs/knuckles

  1. #1
    Team Shonky Vauxhall Iain's Avatar
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    Default HOW TO Big block hubs with machined hubs/knuckles

    Note: "Proper" in quotes in the title, I've got no experience of using the ones machined for Nova bearings and I'm sure with the proper machinework are perfectly safe.

    I did this recently on my Nova so figured some info here would be good. I used the following post by Chip on Vauxsport so hats off to him for the excellent information and measurements:

    http://www.vauxhall-sport-forum.com/...ly-t16071.html

    What you need:

    • Standard Nova knuckles
    • Standard 'big block' hubs (about 35 each for FEBI items from VauxhallWorldParts)
    • Audi 80/VW Golf Synchro bearings, checking measurements with the link above. Some useful part numbers to get them (Thanks to Matthew172 for the info): BRT bearings: BRT 1299, QH: QWB 510, First Line: FBK 081
    • A machinist

    Summary of what you need to do:

    • Get the ID of the Nova knuckle opened out to the OD of the new Audi bearing. Regroove the circlip grooves to use the ones from the bearing kit
    • Machine the new inner hub to look like a "very machined" hub you can buy off the shelf but don't reduce the OD of the inner bearing part at all. If you don't have one of the heavily machined ones to show the machinist this is roughly what you want doing, touching the shiny silver parts only:



    • Press them together as you would normally with the new bearings and check they spin/don't catch anywhere

    Couple more pics:







    Hope this helps?! At least its somewhere to put all information regarding the subject...

  2. #2
    chippy shoulder
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    Ohhh shiny

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    Go low or Go home. Moderator Benn's Avatar
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    That's great. It's one i wanna do next, so having part number is even more helpful.
    All I wanted was a Pepsi, just one Pepsi
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    Club Member Club Member kingwick's Avatar
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    What are the benefits of these over normal Vauxhall ones ? Thanks

  5. #5
    Go low or Go home. Moderator Benn's Avatar
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    Vauxhall ones need to be machined down. So this way there are stronger.
    All I wanted was a Pepsi, just one Pepsi
    Far from suicidal
    Still I get them tendencies
    Bringing back them memories
    That I really miss when I reminisce

  6. #6
    North Events Co-ordinator Moderator boffer8's Avatar
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    Cheers for part numbers, dead helpful.

    Do you know how much you need to reduce the stated areas by?
    If Carlsberg did Motor clubs, then IDMC would probably be the best motor club in the world.


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