To be fair about Alfa engines, they were fine if assembled by a racing engine mechanic. The same was true of the Lotus twin-cam and, for that matter, the MGA twin-cam. Throw them together on a production line, and you had endless trouble. I had an Abarth 750 twin-cam, another lash-up on a pushrod block, and you were lucky to get 1000 miles before the head gasket blew.