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Re: MGB Engine production data

To: Jeff Fayne <fayne@ibm.net>
Subject: Re: MGB Engine production data
From: mmcewen@gpu.srv.ualberta.ca
Date: Wed, 25 Dec 1996 11:09:04 -0500
>mmcewen@gpu.srv.ualberta.ca wrote:
>
>[misc deleted]
>
>> I assumed that this meant that my engine is a 18GH RWe H ------.  Does your
>> engine have a J stamped below the main number?  According to Clausager this
>> would be correct for the number 25916 which describes a California
>> evaporative loss control engine built between October '69 and August '70.
>> The complete range of numbers for 18GJ engines is 22647 - 43548.  These are
>> found in cars numbered 187701 - 218651.
>>
>> My car, being an H series was numbered differently but is correct for
>>the year.
>>
>> I think you have the correct engine, especially if you find the J marking.
>>
>> John McEwen
>
>This discussion leads me to a question:
>
>I have a 70 MGB, car # 208609 with engine number 18GH-RWE-H33177. I just
>finished tearing down the engine in preparation of having some machining
>done.
>
>I noticed that the rods in this engine are of the 5-main angled split
>type which were used in the GB-GF engines. According to Moss & VB this
>engine should have the horizontal split type. I have some history of the
>car, but nothing to indicate that the engine was changed. Is it possible
>that MG still had the old rods/engines around in 1970 or am I looking at
>a pre-70 engine?
>
>                        - Jeff

Hi Jeff:

According to Clausager the change to the later style rods did not occur
until June of 1970, which is quite late in the production year.  It should
be quite likely that most '70s used the earlier-style rods. The production
year ran from August to July.

John McEwen



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