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1980 MGB_Can you fit an early exhaust to the late manifold

Last post 11-07-2007, 1:01 PM by TechTipAdmin@Moss. 0 replies.
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  •  11-07-2007, 1:01 PM 11307

    1980 MGB_Can you fit an early exhaust to the late manifold

    -----Original Message-----
    From: Dave

    Sent: Tuesday, November 06, 2007 11:29 AM
    To: moss.tech@mossmotors.com
    Subject: Ask a technical or parts related question (Req. #262905)

    Submitted Via: MossUSA
    Name: Dave

    Make: MG
    Model: B
    Year: 1980
    Comments: Since I am building a car for off-road ..... Can I remove my
    catilitic convertor And emilinate it by purchasing an exhaust pipe from a
    previous year ?  If so please provide part # .

    ____________________________________________________________________

     

    Hi, Dave,

     

    Unfortunately, there is no exhaust system designed for use on a late B without the catalytic converter. Those systems fitted to the early, pre-catalytic Bs (1963 to 1974) are designed to mate to the early dual exhaust header which mounts to the early dual manifold; your car has a combined inlet/exhaust manifold with a single exhaust outlet.

     

    One option is to find and install early MGB intake and exhaust manifolds with dual SU carbs instead of the single Zenith-Stromberg originally fitted to a 1980 B. This will not only give you better performance but also enable you to use a complete early exhaust system (several variations are listed on the "Exhaust System" pages of the Moss catalog).

     

    Alternatively, you can have a muffler shop custom fabricate a system to run from your single exhaust outlet, utilizing either the original middle and rear mufflers for a late MGB, or the mufflers from an earlier model B, or a pair of “glasspack” mufflers. Again, several variations of original mufflers and some "sport" systems are listed in the Moss catalog.

     

    Lawrie Alexander

    Moss Motors Technical Adviser


    Working on automobiles is inherently dangerous. Moss Motors, Ltd. is not liable for injury or damage due to incorrect installation or use of their products. All products are sold with the understanding that the safe and proper installation and use of the products is the customer’s responsibility. Follow factory workshop manual procedures and instructions, but use current shop safety standards and common sense. Some tasks will require professional advice or services which Moss Motors cannot provide.

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