Over boring the 2.25 litre, or using a larger BMW unit?
We’ve never found any evidence in the archives about Bristol considering buying in a larger BMW unit back in the day. ( the 2 litre was developed under the prewar licence agreement with AFN).
And the centre 2 cylinders of the Bristol 6 are already perilously close together, risking gasket failure there if overbore was tried ( though someone did race without liners for a few more ccs)
Bristol had a well planned path towards bigger engines with their own design 3 and 3.65 litres twin cam all alloy engines which was far into development - and one was even destroyed on the test bed.
The Chrysler was (successfully) chosen at short notice when the cost of further development of Bristol’s 160/220 project couldn’t be met, and one Armstrong unit was tried.
One version has it that an auto gearbox ordered by Filton for testing arrived with a Chrysler v8 attached though I don’t know the source.
Yours in Bristol
Stefan and the Bristol Owners Heritage Trust.
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