Welcome to our resource for MG Car Information.
MG MGB Technical - 18 Gb vs 18V engine
is it possible , to see the differents between an 18gb, gg, and an 18v fom the outside of the engine
assuming that there is no engine nr tag on it
|The simplest is that 18V have a blanking plate below the front half of the exhaust manifold in place of the mechanical fuel pump used on other models, none of the 18Gx engines had that.|
Otherwise you can usually date the engine from block and head casting numbers, info here http://www.mgb-stuff.org.uk/enginetext.htm#dating, lots elsewhere. Bear in mind heads can be changed.
|Also the 18GB has the rear mount for the dynamo further back than that for the alternator equipped 18V.|
|FWIW the 18GD on and the 18V seem to have both sets of bosses.|
|Don't know what you can do with the information but the oil dipstick tube on the GB is threaded into the block. On the 18V, it is press-fit.|
This thread was discussed between 06/12/2017 and 14/12/2017
MG MGB Technical index
This thread is from the archive. The Live MG MGB Technical BBS is active now.