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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGA - easy genny pully question, I think !

I'm building a generator from a box of parts I got with this car. There is a box of pullys, all the same, steel w/square boss riveted together. However, there are two different sizes, 3 1/8" & 3 5/8" OD, which is correct. Maybe one size is for a earlier or later car, don't know. Anybody have an answer and a guess what the other size fits? TIA Jack
JW Jack

There were four different size pulleys, toe for the standard cars and two more for the Twin Cam. See here:
http://mgaguru.com/mgtech/care/csm/mg205.pdf
http://mgaguru.com/mgtech/care/csm/mg237a.pdf
http://mgaguru.com/mgtech/electric/et123.htm

Smaller pulley (and shorter belt) runs the generator faster for better charging at moderate engine speed.
Barney Gaylord

Once again, thank you Barney. Don't know why the PO had a collection of pulley's, guess he didn't know which was correct (neither did I). Jack
JW Jack

This thread was discussed on 16/05/2013

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