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Judson itch....

Discussion in 'The Hokey Ass Message Board' started by summersshow, Apr 14, 2013.

  1. summersshow
    Joined: Mar 3, 2013
    Posts: 899

    summersshow
    Member
    from NC

    I have this itch... Just to mess around with a Judson supercharger. I have a tr-2 with one im building but its too expensive just to play with....


    Anyone have experience with Judsons? Im thinking of buying a vw, putting a Judson on it, just cause I could scratch that itch for around 2k...
     
  2. metalshapes
    Joined: Nov 18, 2002
    Posts: 11,130

    metalshapes
    Member

    Your TR2 special is cool.

    The Judson blower is one of the things that makes it so cool.

    Period modifications on a vintage racecar...

    A Judson on a VW is Off Topic for the HAMB, and a thread about that will probably get Deleted.


    We do have a Aircooled VW Social Group, where you could post about something lik that.

    ( go to my profile page and look though the social groups I'm in to find it )
     
  3. summersshow
    Joined: Mar 3, 2013
    Posts: 899

    summersshow
    Member
    from NC

    Well im not trying to start a thread about the vw... Just the judson... The vw is the cheapest judson model. But I figured someone would have some experience with judsons on flatheads, inliners, model as and the like....

    Trying to start a convo on the judson...
     
  4. metalshapes
    Joined: Nov 18, 2002
    Posts: 11,130

    metalshapes
    Member

    Yeah, just leave the VW part out and it will be fine.

    And honestly, I dont think you could build an entire car for less mony than it would take to get the Triumph engine running right with the blower on it.

    Go through it methodically, and dont get greedy with the boost...
     
  5. metalshapes
    Joined: Nov 18, 2002
    Posts: 11,130

    metalshapes
    Member

    What I would do is,

    Build a second Triumph TR2 engine on SU's or Webers.

    And put that in the car so you can enjoy it while you take your time on the Judson engine.

    The way that car is set up, you could probably switch engines in an afternoon...
     
  6. summersshow
    Joined: Mar 3, 2013
    Posts: 899

    summersshow
    Member
    from NC

    To build that triumph motor correctly and have it stay together will cost $2,894 in parts, roughly $800 at the machine shop, than putting everything together... Not to forget the Judson setup is worth 4-6k, and im going to feed it with a fish... Its not cheap doing it right... Motor will be at about 200hp. Car is light enough 2-3 people could pick it up.

    Some judson kits for (unnamed) makes can be found for around $500 with same (unnamed) car being bought in decent shape for $1,000-1,500...

    The (unnamed) car was just a way i was thinking of playing around with one... Anyone out there with Judsons?
     
  7. F&J
    Joined: Apr 5, 2007
    Posts: 13,291

    F&J
    Member

    The unamed car it was made for was the 36 AND the 40 hp. 1200cc for both

    My feelings on the subject are that such a small supercharger can't be used with greatest results on even a bone stock 1600. The flanges for the intake and the carb really can't be enlarged IMO, without some rewelding of the cast iron body, to get the bigger bolt pattern and ID.

    I don't know if that case/rotor length, which was made longer for the other brands of applications, would be a reason not to try enlarging?

    If you need measures, I have one here...not mine...not for sale.
     
  8. noboD
    Joined: Jan 29, 2004
    Posts: 8,979

    noboD
    Member

    I put a Judson on a friend's -- back in high school. It overheated and didn't run much faster. Everyone else I talked to that ran them had the same experinance. BUT there is a cool factor. I know where a NOS one is I've been trying to buy for several years for my '64 --.
     
  9. F&J
    Joined: Apr 5, 2007
    Posts: 13,291

    F&J
    Member

    forgot to say; don't buy one for any decent money without taking the rotor out to inspect..

    If the oiler was not used, or not enough, the milled deep slots in the aluminum rotor will get worn to a very noticable taper. The rotor is junk at that point, and would cost a ton to remake from a solid billet and then install the hardened shaft,

    Also look at the case bore for deep grooves caused by sand. New vanes will re-seat into the grooves, but will take a while,

    So, if you have some sand grooves in the main case, but there is no taper on the rotor slots for the vanes, at a decent price, I'd probably buy it.
     
  10. metalshapes
    Joined: Nov 18, 2002
    Posts: 11,130

    metalshapes
    Member

    Dammit.

    Now you tell me.

    That would have really helped me, if I'd known before...:rolleyes:
     
  11. There's a couple of guys, George Folchi in CT for one, the specialize in Judson parts, bearings, rotors, vanes, etc for them
    If you car overheated with one on, you did something wrong.
    You can find quite a bit of info on something called the Judson Registry, don't know the URL but Google it; it shouldn't be hard to find, and it covers not only the unnamed cars, but Triumph, MG, Morris, even recall seeing one for a Hillman.
    I ran one on an unnamed car with a 40 horse, acted like a 1600 dual port 8)
     
  12. summersshow
    Joined: Mar 3, 2013
    Posts: 899

    summersshow
    Member
    from NC

    Anyone ever run one on a flattie? Or a Banger?

    I think one on a banger could be quiet interesting. I know they use to make a kit for a flattie...
     

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