Join Date: Jan 2005
Location: San Juan Capistrano
Yea, that explanation makes sense. Pertronix probably does a lot of volume in distributors for air-cooled VW's. So, just swapping the drive cog, and calling it an Alfa Romeo distributor is probably good business. The fact that the advance curve is totally unsuited to an Alfa doesn't seem to bother them.
Taking the spreadsheet & chart that 101/105 guy posted, and swapping the X and Y axes gives the kind of advance curve that we are used to seeing. That is, with RPM on the horizontal axis, and degrees advance on the vertical. See the excel file attached below.
If I were going to spend $300 on a new, electronic distributor, I'd get a Centerline IE405. Same price, and it is engineered for an Alfa - not a VW.
San Juan Capistrano, CA
'65 Guilia Sprint GT
Last edited by Alfajay; 02-21-2011 at 08:25 PM.