We have now discovered the route cause of the engine issues on our 1963 Jaguar SS100 engine. Unfortunately this does however mean the engine needs to be removed in order to rectify the problems. The block face is warped and will require re-facing. The uneven surface could have been caused by a number of factors but does suggest that we have had previous overheating issues at some stage.
Once removed, the engine will be totally stripped, removing pistons, crankshaft etc.
The block will need to be honed and to be reassembled with new piston rings. We have advised to replace the piston rings in case there are any imperfections in them. It makes sense to carry out this task whilst the engine is in this current state as any issues undetected would undo all of the hard work in rebuilding.
The crankshaft bungs and waterways will be removed to ensure the oil ways are free of sludge.
