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MG MGB Technical - Crown wheel & pinion BTA 1224 & 5

I have a 3.9 crown wheel and pinion. The C/Wheel has P/No BTA 1224 and the Pinion is P/No BTA 1225. I am told they are for an MGB, preceding BTB 653. Can anyone throw any light on this?
C Manley

I have a part number for midget 3.9 crown wheel & pinion set as BTA1223, so I would hazard a guess that that's what you have.

I might be interested in taking them off your hands if you want to part with them.
Dave O'Neill 2

The C/Wheel is approx. 165mm in diameter and the Pinion is approx. 155mm long end to end. They are genuine unused MOWOG itemes as you can see from the image.

I was going to put them on e-bay this weekend but i'd be happy to give a Bulletin Board user first refusal. I would want 75 plus postage but to not break the BBS protocol please contact me offline on the mail address shown if you would like them.


C Manley

Did you resolve what your CWP was for? Was it early MGB, or Midget? I,m looking for an early B 3.9:1, & would like to know what the part nos are.Same item as MGA 1600 Mk2 I believe.
DG Harrison

The 1600 Mk 2 MGA uses a 4.1 ratio
P D Camp

This thread was discussed between 08/10/2010 and 03/11/2010

MG MGB Technical index

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