3.0 dizzy differences
 

I realize that 3.0 dizzies spin ccw, but just learned that their curves are different. Is it the difference between US and Euro engines? Can they be easily re-curved? And does it matter which core dizzy is used when they are converted to twin plug? Final question...who are our options for twin plug conversions these days?

Here are the advance curves for the SC distributors
The distributors can be recurved pretty easily by a distributor professional. I recently had an SC dizzy completely rebuilt and recurved for carbs for under $400. Supertech sells twin plug distributors for SCs and will take your stock dizzy as a core.

Daniel Journey


3http://forums.pelicanparts.com/uploa...1648868171.jpg
http://forums.pelicanparts.com/uploa...1648868171.jpg
http://forums.pelicanparts.com/uploa...1648868171.jpg
http://forums.pelicanparts.com/uploa...1648868171.jpg
http://forums.pelicanparts.com/uploa...1648868171.jpg

I think the best distributor option for our 911's is from the 123ignitionusa.com the bluetooth model
Remember all factory advance curves were set for EPA standard , not performance
These curves are advance at the dist not the crank, so double the distributor advance and you have crank advance
The dist turns at half the crankshaft speed , so x2 for advance.
The 3.0 likes a max advance of about 30-32 total advance btdc depending on fuel , compression and elevation. I'm at 6000' and 9 to 1 compression and I run 32* all in
Ian