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Gatornapper |
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,241 Joined: 22-September 17 From: Woods west of Richmond, VA Member No.: 21,449 Region Association: South East States ![]() ![]() |
Questions re: Weber 44 IDF carbs:
1. Is anyone running these on a stock engine, and if so, how do they perform? National Carburetors kit for stock engines is 34 ICT's, lightly modified 40 IDF's, and only 44's on heavily modified engines. 2. What problems do you introduce using 44's? other than dumping too much fuel in the engine...... 3. Venturi's are 45mm, someone pointed out that one should use 40mm venturi's - is that with a stock engine? 4. Anyone run 44's and then convert back to EFI? How did that go? Labor cost? TIA, GN |
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Dave_Darling |
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914 Idiot ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 15,000 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California ![]() ![]() |
If you like staring at analog circuits, you can download the circuit diagrams for the D-jet ECU from Brad Anders' page there. The diagrams were drawn up by Frank Kerfoot, who I believe was a sparky at Bell Labs at the time. I was able to get ahold of a copy and scan them, and Brad volunteered to try to make sense out of them. (Better anyone else than me!!!)
The D-jet is electronic, but just barely. Everything is analog, and the basic injection pulse width (time the injector is open) is determined by the inductive coupling between two coils of wire, moderated by a metal rod that is physically moved by air pressure.... It's massively funky to someone who is more used to 1s and 0s! Anyway, sounds like you have a plan, which is more than half the battle. --DD |
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