Welcome to our resource for MG Car Information.



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 TD TF 1500 - Dist. rotor woes

I rebuilt the engine in the '50 TD, and runns like a top. I changed the wires, cap and rotor. I replaced the rotor with the "red one and the engine would not start. Exchanged it with the original and it fired right up. I tried a Lucas rotor and it would not run. The original rotor is getting sloppy and I would like to replace it. All the rotors look correct, I just can't figure why they will not work.

The original has a long leg on it, but the new ones do not and by the arc marks it seems that this should make no difference.

Anyone have any ideas?
C.R. Tyrell

Had the same when I replaced mine with "red one".
Mine was not seating correctly.
A very slight rub with some fine emery cloth on the "leg/post" cured the problem. It was just a tad "too thick" to seat correctly.
Hope this helps....Good luck.
David Sheward

David , thanks for the tip. By "post" do you mean the steel surface above the cam?
C.R. Tyrell

Actually the "indent" in the rotor would be a better discription. That is what I hit with the emery paper ...not the distributor.
David Sheward

I will try it. Thanks
C.R. Tyrell

I had a similar problem with the red one. Bud made the suggestion of hitting the bottom of the cap with the side of the grinding wheel and taking enough of to let it sit down properly. Didn't take much, just a tad and it worked like a charm.
Mort 50TD (1851) Mobius

Mort, you're taking that out of context. It's intended to avoid problems caused by the thickness of some pertronix magnet collars. See However, it's of paramount importance for the rotor to have a good, close fit on the shaft of the distributor. Bud
Bud Krueger

Thanks for the correction Bud.
Mort 50TD (1851) Mobius

This thread was discussed between 30/05/2012 and 01/06/2012

MG TD TF 1500 index

This thread is from the archive. The Live MG TD TF 1500 BBS is active now.