In <Pine.SUN.3.91.950621160406.23626A-100000@northpole.med.uvm.edu>, W. Ray
Gibbons wrote:
>Despite being only 25 years old and not knowing a blessed thing about cars
>or the meaning of life, Greg was right about the location of the fixed
>timing mark on an MGB 18GH engine.
>
>I had driven it to work, so I looked. There the little thing is, hanging
>like a mechanical uvula behind the crank pulley, dead center on the bottom
>(it looked a lot like a multifaceted oil drop). What a wonderful place
>for it; you need pretty long arms to adjust the timing. Now, either the
>car is running with the timing 60 -120 degrees advanced or retarded, which
>seems fairly improbable, or mayhap there's a rubber layer in the pulley
>that has slipped. Just because I am curious, I'll check the static timing
>as soon as I have time, and see what I get.
Seems to me you have a late model pulley and earlier timing cover. As
mentioned, I've seen that before. The advance on this engine can be
quite dramatic (some 40-50 degrees at higher speeds), but that should
not happen at idle, unless the springs have fallen out of the
distributor.
A. B. Bonds
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