MG-Cars.info

Welcome to our Site for MG, Triumph and Austin-Healey Car Information.

Parts

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 MGB Technical - Blue or Black OD gearbox

I'm debating whether to install a blue or black OD gearbox in my 72B ? your opinions please.
Thanks,
Barry
Barry 72B

Chrome bumper cars i.e. 72 have black label ODs, rubber bumper blue label. The main knock-on difference is that Mk2 black label ODs require a 1280tpm speedo (which presumably you have), blue label a 1000tpm (which presumably you would have to obtain).
Paul Hunt

Paul- Thank you
Barry 72B

I may be wrong but I think the earlier Black label boxes are top fill with the dipstick and the blue ones are side fill,no dipstick, easier in my opiniion.
Mike
MK Mike K

On a short side note: any idea how much a blue label and a 1280 speedometer will throw off the readings? I'm not quite on the road yet and for sure will GPS it, but just curious what I'll find.
T Lea

The *gearboxes* were top-fill for chrome bumper and side-fill for rubber (and having both the side-fill is definitely *not* easier in my opinion, either to check or to top-up), but the labels are on the OD so you could get a mix and match.

1000tpm drive vs 1280tpm speedo, i.e. 22% lower i.e. quite a bit and definitely ticket territory.
Paul Hunt

This thread was discussed between 14/11/2009 and 17/11/2009

MG MGB Technical index

This thread is from the archives. Join the live MG MGB Technical BBS now