As some of you know, I was having trouble with sorting out the dizzy for my carby-turbo setup. I wanted something that would advance off boost and retard on boost, with out going electronic or anything like that. I was also advised not to lock the dizzy as it means the engine is sluggish off boost.
Anyway, here's how the problem was solved: After looking around, I found a place in Oregon called Dale Manufacturing. Dale, the owner makes vaccuum diaphragms to suit Fiat Spyders which people want to turbo.
This unit is designed to give regular advance off boost, and to retard the timing with the turbo kicks in. It gives about 15 degrees of vacuum advance and 10 degrees of pressure retard (once the car hits boost). Anyway, I ordered this diaphragm from Dale and took both that and my dizzy to The Good Ol' Boys Race Shop in Albany Auckland.
Mike from the shop took to both my dizzy and the unit, adapting both so they would fit within each other and work together. He reckons that it's going to be perfect for what i'm doing.
Here's a few pictures to show you what it looks like:
http://www.dalemfg.com