Cheers guys, googles it to find a few people saying 19, so off to Halfrauds, back to find wouldnt fit, back to Halfrauds for 21mm. Fits fine. Start compression tests only to find couldnt fit the socket into number 4 as the head bolt is in the bloody way.
Anyway dry/wet compressions shows number two is flucked anyway. So for now the Be-1 is dead. Busy throwing money at the Skyline this month so mothballed for now.
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