Join Date: Mar 2007
Location: San Antonio, Texas
The design of headers like Spruell's along with the similar Darstan headers sold by both Vintage Customs Alfa and Wes Ingram show a curved #3 primary in very close proximity to both the steering box and brake master cylinder. If you are running these headers it is a very good idea to fabricate a heat shield between the primaries and the other components. Looking at the original Alfa TI Super/GTA headers along with modern interpretations is a good indication that there is some disagreement over whether there is any advantage to be gained by designing such all-equal-length primaries.
As Ed's photo shows, there are lots of very stout engines running headers with designs similar to the original TI Super/GTA's. With this in mind I chose the full Alfaholics system for my hot-rod 2 liter build. In all my years of Alfa driving I've never had headers that didn't require at least a small amount mechanical persuasion in order to fit properly. Not so with the AH full stainless system. I was mentally preparing for a session of skinned knuckles and the obligatory blood sacrifice but to my great surprise the AH headers slipped right on with no trouble at all. Initially, the sound of the AH exhaust system was a little louder than a stock exhaust. It was a good sound although lacking in some of the drama that we closet "boy-racers" might like. Over time, however, the AH exhaust has opened up and now has a real Jekyll and Hyde character---relatively quiet around town but definitely prominent as the revs go up.
Jim . . . '72 Super 1300, '70, 1750GTV, 2nd series,
'62, Lancia Flaminia Zagato3c, 2nd series