330GT Front suspension | FerrariChat

330GT Front suspension

Discussion in 'Vintage (thru 365 GTC4)' started by GT ROCK, Mar 6, 2022.

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  1. GT ROCK

    GT ROCK Karting

    Jul 24, 2015
    95
    UK
    Full Name:
    Keith
    Hello Folks,
    I finally got around to rebuilding the front suspension on my 330GT mark 1
    I have got as far as you can see in the picture and am now at a point where I have to deal with the spring.
    As I cant get a spring compressor in there I presume I have to do it with a jack and maybe straps, any tips on where to jack and where to split to release the pressure, ie top or bottom?

    Thanks,
    Keith Image Unavailable, Please Login
     
  2. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    2,043
    You need to ask that question on tomyang.net

    That is where people with the older cars meet to discuss questions like this. Great people and very knowledgeable.
     
    Bryanp and TTR like this.
  3. GT ROCK

    GT ROCK Karting

    Jul 24, 2015
    95
    UK
    Full Name:
    Keith
    Thanks, on my way.
     
  4. TTR

    TTR F1 Veteran
    Rossa Subscribed

    Mar 29, 2007
    5,897
    Riverside, CA
    Full Name:
    Timo
    What !?! :eek:
    FChat knowledge not good enough ? :confused:

    Per capita, I tend to agree. ;)
    :D
     
  5. GT ROCK

    GT ROCK Karting

    Jul 24, 2015
    95
    UK
    Full Name:
    Keith
    Perhaps more buyers and drivers than hands on enthusiasts here
     
  6. Jumprun

    Jumprun Karting

    Feb 7, 2012
    227
    Southern California
    Full Name:
    T. Martinez
    Don’t forget to search Tom’s blog as well as the forum.
     
  7. christc

    christc Formula Junior
    BANNED Silver Subscribed

    Mar 3, 2013
    470
    Germany
    Hi Keith,

    the spring has some pressure, so better be carefull. You might be able to dismount it with a jack but it is risky. I would suggest to build yourself a simple spring compressor. I used parts of an Austin Mini compressor and a Hazet part - see photos. I can provide parts numbers if you are interested. This way it is much safer&easier, especially if you remount the springs latter.

    BR
    Christopher
    Image Unavailable, Please Login Image Unavailable, Please Login
     
  8. GT ROCK

    GT ROCK Karting

    Jul 24, 2015
    95
    UK
    Full Name:
    Keith
    Christopher, that looks perfect for the job, I will get on with building one now, yes please with the part numbers if you have them to hand.
    Thanks
     
  9. christc

    christc Formula Junior
    BANNED Silver Subscribed

    Mar 3, 2013
    470
    Germany
    Hi Keith,

    the long tool is a standard Austin Mini cone compressor I modified.
    See link below for an example:
    https://www.moss-europe.co.uk/cone-compressors.html

    The top plate is from Hazet part number 902-11. Not cheap, around 60€ here in Germany. I ground it flat to fit but it still has lots of material to be safe.

    There are two different types of spindles with the cone compressor, one coarse the other fine thread.

    I used the coarse spindle as it allowed me to use the flat nut from a disc cutter to fix the Hazet plate to the spindle once the plate has been inserted in the spring.

    The big round distance pieces I had from other tools but I am sure you find something to use.

    Hope I explained it in an understandable way.
    Let me know if you need further info.

    For sure there are professional tools for it. I saw one from Hazet but was not willing to spend the 700€ on it.

    Perhaps others have better sekf build solutions?

    Cheers
    Christopher
     
  10. GT ROCK

    GT ROCK Karting

    Jul 24, 2015
    95
    UK
    Full Name:
    Keith
    Christopher,

    Thanks I am sorting it now, I thought I reccognised the grinding disc retainer.

    All the best
     
  11. christc

    christc Formula Junior
    BANNED Silver Subscribed

    Mar 3, 2013
    470
    Germany
    @Collesano
    Thanks, you are right, 4902-11 instead of 902-11
     
  12. GT ROCK

    GT ROCK Karting

    Jul 24, 2015
    95
    UK
    Full Name:
    Keith
    Thanks for the help, someone had recommended doing it with a jack but you got me thinking that a proper tool was the way to go. My friendly local garage lent me an internal spring compressor without me having to ask, the 2 springs are now out, tomorrow a big clean up and I start a shopping list.
     
  13. christc

    christc Formula Junior
    BANNED Silver Subscribed

    Mar 3, 2013
    470
    Germany

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