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Author Topic: HIF SU mixture screw  (Read 299 times)

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  • AMGBA Club Member
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  • MG information: 1973 harvest gold B-GT
HIF SU mixture screw
« on: June 19, 2022, 10:32:05 AM »
Thank you John Twist for great YouTube segment on tuning SUís.   My Ď73 GT had not run in 30+ years.  The car now runs but very rough. I used the YouTube segment but the rear unit would not enrich. I pulled the unit back off and discovered the screw frozen in the body full clock wise. Itís been soaking in liquid wrench but dare I try to use the heat method. Great stuff on YouTube. Thanks in advance
Bill Paul
Original owner.


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Re: HIF SU mixture screw
« Reply #1 on: June 19, 2022, 11:44:11 AM »
You should contact John Twist directly at:

John H Twist
University Motors Online
100 East Beltline Avenue SE
Grand Rapids MI 49506-2410
Cell  616 307 6737
American MGB Association
phone/text: 773-769-7084

North America's oldest and largest club for all MGBs, MGB-GTs & Midgets.  A nonprofit organization founded in 1975 and offers color magazines, emagazines, technical advice, member recommendations on service shops, registration of your MG, a tradition of service & FREE member classified ads that appear in the magazine & on the website.


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