In a previous thread in archives, http://www.aussiefrogs.com/forum/arc...p/t-89720.html scotty dread commented:
"The 8G on the other hand, has its spark plug in a small chamber above the combustion chamber which feeds into a pair of flame ports which connect to the combustion chamber - this gives two flame fronts in the main combustion chamber (essentially twin spark with one spark plug). It had a beautiful set of intake manifolds / throttle assembly with 2 x double barrel side draught webers (or solex) and a proper air cleaner, as well as a lovely exhaust manifold.
The 8G motor really is a work of art, there is reason for the stigma."
And geokoeng commented that:
"Being nostalgic is not being the best, the R8G was not a good motor, it worked well enough for its time. Head did not like modified cams, and cracked a lot between valves and the fire holes, and out of the combustion chamber from the exhaust valve to the steam hole on the inside of the head, normally 2 and 3. I have also seen them form cracks from the water gallery in to the rocker area, white oil."
I am thinking of changing the standard R8 motor in my A110 to an R8G and in view of the above was wondering if that would be a good move? Are the issues serious enough or frequent enough to avoid the R8G motor although I understand the head can be repaired?