At 22:41 19/01/98 -0600, you wrote:
>Hello Terry:
>
>Your GT has a GH series engine which is correct for Oct 68 -- Aug 70. The
>first MGB 1800s were 18G (1962-64), then came 18GA, GB, GC..., GH, and so
>on until the 18V series (1971-80). So the first H is just part of the
>engine series designation.
(Snip)
>You know, it might not be too healthy to know all these numbers. I'd be
careful.
>
>Regards,
>
>David F. Darby
>Ozarks Highlands, Missouri, USA
>
David:
Thanks for your response. I've got the Clausager book - just missed looking
through it for the info. BTW, call me paranoid, but those are not the actual
#s. I scrambled 'em B4 posting. Excellent point, however.
And again, thanks for the advice.
Terry "Got It Straight" Williams
'79 BGT
'68 roadster
>----------
>> From: Williams/MG Guy <mgguyc100@newedge.net>
>> To: mgs@autox.team.net
>> Subject: B Engine Numbers
>> Date: Monday, 19 January, 1998 6:13 PM
>>
>> Hey listers...especially those with knowledge of the engine numbering
>coding
>> circa '68 - '70 for the MGB...
>>
>> My reference indicates the following:
>>
>> 1st prefix group - Cubic capacity, make & type
>> 1st prefix number: 18 = 1800cc
>> 1st prefix letter: G = MG
>>
>> 2nd prefix group - gearbox & Ancilliaries
>> Letter: U - Center gear change R - overdrive RC - automatic
>> RWC - Center gear change with overdrive
>>
>> 3rd prefix group - compression & serial number
>> H - high comp./L - low comp.
>>
>> All of this is well and good, yet later the reference piece speaks of
>other
>> prefixs, including WE - Center gear change-all synchomesh.
>>
>> OK, so here's the puzzle. On my '70 BGT, the engine # is 18GH-WE-H 21305
>> (sic - right off the plate, spaces & hyphens), which sort of makes sense,
>> 18G, then the first H, is that high compression, or is the *second* 'H'
>that
>> preceedes the actual serial number the compression 'H'? And the 'WE' is
>> correct, as it left the factory without an OD. So, if one H is for
>> compression, what's the other indicate?
>>
>> This brings me to my roadster. The original engine plate disappeared
>during
>> a rebuild, but I did record it as 18GH - WE 4591. As I'm about to replace
>> the engine ID plate with one from Clarke Spares (thx to all for that
>> advice!), I thought I'd have the original number modified to reflect the
>OD
>> that I'm installing.
>>
>> Still with me? How then would that read? 18GH-UR-H 4591 (U=center gear
>> change/R=overdrive), or should it be 18GH-WER-H (WE=center gear change
>all
>> syncro/R=overdrive)...OOOORRRR, how about 18GH-RWC etc. (RWC=Center gear
>> change with overdrive).
>>
>> Such a dilema. Can anyone with a circa late '68 to end of September '69
>OD
>> equipped car check to see what the correct sequence of letters that were
>> used might be?
>>
>> Thanks for any insight.
>>
>> Terry "Got a Code In My Head" Williams
>> '70 BGT
>> '68 roadster
>
|