Head nuts Cylinder liner
Head nut washer
Minimum oil pressure light switch
Oil pressure sender
Bell housing to engine block spacer
Engine mount
Head stud
Rear crankshaft oil seal
Bell housing stud
Main bearing tab washer
Cigarette oil seal
The many forms that the Twin-Cam was offered in also included a turbocharged version
over 1650rpm, was the very first production car engine with variable valve timing. Alfa updated the system in 1983 from a centrifugally-activated system to an electromechanical one.
That engine produced 128hp, small compared to the sort of figures available from early, less complex engines built to a fast road spec. It’ s these sort of engines that Paul builds a lot.‘ They make great fast road engines. If you take a 2-litre, for instance, we’ ve got a fast road package now that we do. We know what works and what doesn’ t work. A decent fast road spec engine, that is manageable on the road, you’ ve got 155, 160hp. That’ s the limit for a fast road spec engine before it comes a bit fussy. A race spec two litre on a pair of 45 DCOEs is probably about 190hp.
Summer 2025 The Engine Rebuilder 31