View Single Post
Speedy Squirrel Speedy Squirrel is offline
Rocket Scientist
Join Date: Jun 2008
Location: Detroit
Posts: 952
If my understanding is correct, you would not gain as much, because the 964 based 911 turbo had and electronic ignition map. I think your distributor has no vacumn "can" on the side. Is that correct?

All of the 1989 and older 911 turbo's used a combination of vacumn advance/retard and centrifugal advance. This is OK, but pretty old-school by today's standards. It was also compromised by the fact that ignition retard is used to raise idle speed when the engine is cold (emissions). In order to make this work right, the base ignition timing is also retarded from optimum, which in turn throws off the centrifugal/vacumn advance. The whole timing curve is just not quite right.

With electronic ignition timing (still using a distributor) I won't be needing the vacumn advance/retard (the can on the side) mechanism. The 3.2L distributor does not include it (being a DME motor). That is why I want to adapt one to the 3.3L turbo engine. I could just remove the can and it's linkage on my 3.3L turbo distributor, but that is not as cool!
Old 02-22-2009, 08:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)