25-03-2022, 04:16 PM
I spent this morning preparing the new engine for the Ulster rep prior to getting it on the test bed. Whilst looking for a few bits and pieces I found the first of the wedged low comp heads that I did. This head was on the engine with the pressure fed Reliant crank, fitted when the supercharger was removed. As wedged heads were discussed a short while ago, I have taken some photographs which clearly show the shape of the combustion chamber. The CR is in the region of 7 :1. I seem to recall seeing a photograph of an original GE Brooklands head and the shape of the combustion chamber was very similar. It is a long time ago so I may be wrong. For those interested the head is 37.5mm deep on the nearside and 33.5mm deep on the offside.