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MG MGB Technical - Alternator/Neg.Ground Convertion

Hey Guys,
I am a regular contributor to the Magnette BBS, but have never used the "B-Technical BBS" before. I have a 1967 B-GT that is all orginal. It is one of the 1st anniversary specials and was ordered with every option available (some dealer installed) except for the heated rear windsheild. In addition to Lucas fog lamps, cigar lighter, and Cool-air AC, I have added a modern CD player. The car still has its original electrical set-up (ie. twin 6 volts, positive ground, and generator). Not surprisingly, the generator burned up on a long trip recently.
I was planning to convert the car to negative ground and put an alternator on. The negative ground would allow me to discard the voltage inverted needed for the modern radio and the alternator should be a more reliable current source. My question is which alternator should I use. My first thought was to use an original style Lucas unit from a '69 or later B. A gentleman named Frank from Moss Motors tech support suggested research a higher output alternator considering the number of accessories on this car. Any specific suggestions would be greatly appreciated, as this is my everyday car and I need to get it sorted ASAP.

Thanks,


Paul
Paul

Go to Rick Astley's excellent MG Electrical site and bookmark it for future reference! Go first to this page, http://www.mgcars.org.uk/electrical/pwr_conversion.html, for the specific info for your conversion, and then go back to the home page and grab it. There is lots of great info there!
Bob Muenchausen

http://www.mgcars.org.uk/electrical/index.html This is Rick's Homepage URL.
Bob Muenchausen

The dynamo shouldn't have burned out, the control box has a current regulator to stop this happening. MGAs didn't have the current regulator relay and *could* burn out the dynamo on sustained high loads.
Paul Hunt

This thread was discussed between 27/05/2002 and 28/05/2002

MG MGB Technical index

This thread is from the archive. The Live MG MGB Technical BBS is active now.