Posted 16 April 2018 - 05:22 PM
Thanks Nick,
From that thread, Mokespider wrote:
There were 3 series in the 1275 block castings pre-A+ that I know of and I'm quite sure, this is one of them.
The early series were thin flange. These are a fairly rare. These were also machine up to take the smaller big end crank, which were thinner across the thrust faces, though it's likely that the last of them were wider, but I'm not 100% sure on this.
Later ones (not long after those ^) were basically the same, but thick flange.
The last of them were similar again to these ^ but the tell tale being an added lump to the casting for the later tensioner type timing chain set up. From the blocks I've had my hands on over the years, these were generally the best of any 1275, A+ included.
Mine has that added lump.
Rorf, what do you mean? Elaborate please.