Weber 44 IDF's - keep - or find original d-jet? |
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Weber 44 IDF's - keep - or find original d-jet? |
Gatornapper |
Oct 9 2017, 04:03 PM
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#1
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Senior Member Group: Members Posts: 1,259 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 |
Dave_Darling |
Oct 10 2017, 03:00 PM
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#2
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914 Idiot Group: Members Posts: 15,048 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
If the cam has been changed out for a carb-friendly one, you'll never get the D-jet to work right.
Sir Andy got his car to work OK with 44s, but he swapped in smaller venturis. I don't remember the size, possibly 36es? The larger carbs on the smaller engine will give you a week vacuum to pull fuel into the air stream. Mixture quality will suffer at low RPMs, and low-end torque and drivability will probably be worse. It will be able to wind way up at WOT, but the stock cam and heads limit your useable RPM range anyway. That said, they can be made to work. But 40s are generally preferred on 914 motors. As Rob C. said--if you know carbs and don't want to learn D-jet, stick with carbs. Use your best judgement on what size will work for you. If you're selling the car, it's usually best to do as little as possible to it. You almost never get back the full cost of work done to a car when you sell it. --DD |
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