40 or 44 IDF Webers, size matters |
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40 or 44 IDF Webers, size matters |
930cabman |
Apr 14 2021, 05:00 PM
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#1
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Advanced Member Group: Members Posts: 3,144 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States |
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 |
nditiz1 |
Apr 15 2021, 06:11 AM
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#2
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Senior Member Group: Members Posts: 1,191 Joined: 26-May 15 From: Mount Airy, Maryland Member No.: 18,763 Region Association: MidAtlantic Region |
Simplicity for me too. I worked with the black magic of the D-jet, but had more working knowledge of carbs. I had a harder time diagnosing an issue with the D-jet and started to take away things that could potentially cause issues, but were not needed i.e., Cold Start Valve, decel valve. Ultimately trying to get back to a simplistic system.
This does not mean that carbs are simple. They have their own set of rules you must follow and several have spent hours tuning them to the point where - well it gets me down the road. Suffering from poor mpg, bucking, overheating, just to name a few. Most of these stem from dirty carbs, incorrect jets, or linkage setup. If you start with a good working set and know your engine you can follow the methodical steps to get everything dialed in. What really helps is knowing how everything works together. I learned a big part of this a few years back when trying to tune a set on a new top end 2056. Learning that one could drive around with the main stacks removed was an eye opener. That is how you can set the idle jet and know exactly when the tip in starts for the main so as to not have a flat spot. That combine with an AFR can really help you dial them in perfectly. |
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