 Old Judson VW superchargers |
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| Sprout |
 Feb 13 2020, 01:03 PM
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#1
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Member  Group: Members Posts: 125 Joined: 5-October 18 From: Kansas City Member No.: 22,544 Region Association: Upper MidWest  |
Came across this ad from 1971 for Judson VW superchargers. Does anyone know of anyone ever using one in a 914?
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Replies(1 - 7)
| jim_hoyland |
Feb 13 2020, 02:54 PM
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#2
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Get that VIN ? Group: Members Posts: 9,809 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California 
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| Mueller |
Feb 13 2020, 02:59 PM
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#3
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914 Freak! Group: Members Posts: 17,155 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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I've only seen pictures of roots style supercharger being used on a 914.
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| jim_hoyland |
Feb 13 2020, 06:31 PM
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#4
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Get that VIN ? Group: Members Posts: 9,809 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California
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And there was this members; later sold and removed, RayJay ?
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| porschetub |
Feb 13 2020, 07:10 PM
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#5
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Advanced Member Group: Members Posts: 4,877 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Not really ,very old tech and only very low boost,external oiling required,better choose is the later Eaton blowers as used on so many more modern cars but in reality it would be a bitch to get it all working on a T4.
The Judson's are priced through the roof as the early beetle guys fit them for bragging rights but the power increase is rather limited and with 36 and 40hp there is little more you can do to make more power. The Judson stole HP to make a little extra but was the must have part back then. A better solution was kits offered in the early 60's by german companies using the twin single throat Solex from the early 356 and a sport muffler,some went further. |
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| poorsche914 |
Feb 13 2020, 08:50 PM
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#6
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T4 Supercharged Group: Members Posts: 3,139 Joined: 28-May 09 From: Smoky Mountains Member No.: 10,419 Region Association: South East States |
Here's mine... B&M supercharger with a single progressive carb.
Built in the late '80s, I am convinced it has never truly run "great" after talking to both the builder and the guy who bought it from him. My summer project is to install a Megasquirt system that should really wake up this motor's true potential. https://www.youtube.com/watch?v=dDbVgTY7a_s (IMG:style_emoticons/default/driving.gif) |
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| Robson51 |
Feb 13 2020, 09:10 PM
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#7
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Member Group: Members Posts: 88 Joined: 18-November 19 From: seattle Member No.: 23,654 Region Association: Pacific Northwest |
I ran both a Judson and a Shorrock on a Bugeye Sprite for almost 20 years. 6 pounds max boost, and mainly it increased torque, and caused lots of head baskets to fail.
I’d use a contemporary supercharger out of a junkyard before going down the road with a Judson |
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| Mark Henry |
Feb 14 2020, 07:51 AM
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#8
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
The head and head stud design of the T4 doesn't enjoy boost, I can make way more reliable HP from a NA engine.
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