Zenith tuning on 2.4E spec
 

I'm in need of the pelican brain once again.

Recently rebuilt a '71 2.2T but upgraded the engine a little to 2.4e spec using 2.4 crank, e cams, ported heads and 9.6CR. Sport muffler as well. Should be a nice driver.

Engine starts and idles (although a little low rpm) and runs ok.

The original 2.2T Zeniths are completely rebuilt, but naturally needs some tuning to match the new engine specs.

I'm thinking

Idle 55
Mains 125
Air correct 125

How does that sound to the guru's?

The car:
http://forums.pelicanparts.com/uploa...1731332162.jpg

That's a great looking car. Have you checked out Paul's website here: https://www.performanceoriented.com/performance-tuning-part-2. There's a table for tuning that may at least get you in the neighborhood.


Lucas

On my 2.4 engine, 35I, 35E ports with E cams and headers I ran 30MM venturis, stock Idle and air correction jets, main jets changed to 145. I live in Colorado, so 5000 plus elevation.

Dyno of engine in link below.

https://forums.pelicanparts.com/porsche-911-technical-forum/1151593-dyno-summary-testing-early-2-4l-2-5l.html

john