right went to machine shop and jed who works there(boss is away) is going to measure the engine, check the clearances and see if it will hone out, he thinks it might, so need to take the engine out weds/thur.
iain who sponsors me and has raced cars for 30 years and has his own garage, thinks the damage might of happened before the car was even started, as there was a small brass plug missing from the head.
he ported and welded the head up to optimise the combustion chambers a few years earlier but never used the engine/cams/throttle bodies etc as the car they were for wouldn't work and never got finished. i bought all the gear off him and built the engine, but the small brass oil way blanks in the head hadn't been replaced and he'd forgot they were missing. he told me head was finished, so when the engine was built it had no oil pressure on the starter until i found this eruption of oil inside the head, whilst cranking. the shells were damaged and were replaced, and he thinks this may have caused the piston damage as well
will get it all measured, i may get away with a re-ring + re-hone but need to wait and see
bad mistake but with the timelapse and different people doing different things over three years an easy one to make
cheers