40 or 44 IDF Webers, size matters Options

[930cabman]

We are converting a stock 2 liter 4 cyl from D jet to Webers. My gut is telling me a 40 IDF with 32mm venturis is the correct starting point. I am considering purchase of a complete set of 44 IDF's, but are unable to locate 32 mm venturis. Assuming 32MM venturis can be found are 44 IDF"s too large for a stock 2 liter?
thank you

[ClayPerrine]

I am on the side of Fuel Injection.

I have run both Carbs and FI on a variety of engines in 914s. I have had a L-Jet four, a D-Jet four, a Carbed four with both Dells and Webers, a Carbed six, a MFI six, and a Motronic six.

The carbed four was the worst of the bunch. I never could get the carbs to stay synced, I always had problems with hard starting and fuel smell issues. I also had issues with hydraulic lock when it rained. Picture me in a driving rainstorm in the parking lot at work trying to get my car started so I could drive home.

Putting the stock D-Jet back on that engine made all the problems go away.

The second worst was the MFI six. It was great when it was running right. Fantastic throttle response, great power and it SOUNDS great. But when it got off, it was a bitch to fix. Hours spent with the protractors, and a wrench to get each stack synced, then syncing the pump to them as a group. (IMG:style_emoticons/default/headbang.gif) Even when it was right, cold starts were an excrsize in frustration. Ether in the air cleaner. Cough sputter die. Another shot of Ether, cough sputter.. start running on 4 cylinders. Keep it running until the other two finally start to fire. Wait 5 minutes for it to warm up before I could drive.


The best is by far the Motronic. Turn the key, it idles... rain, shine,cold or hot. Second best is the L-Jet. But it is the father of the Motronic. It has cold idle issues, but that can be overcome with a little heel/toe until it warms up a little.

The d-jet is better than carbs. Even the carbs on our factory six irritate me.

I would buy a Bowlsby harness and put the D-Jet back on the car. Better gas mileage, better performance, and less gas stink.

Just my $.02.

Clay