Reviving NOS Webers, Initial Settings? |
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Reviving NOS Webers, Initial Settings? |
bbrock |
Mar 20 2019, 08:55 PM
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#1
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
I didn't want to hijack the other thread but have a question about my own Webers. They are Italian 40IDFs I bought in the late 80s or early 90s. Other than finger tight bolting them on to my engine to see how cool they looked, they have never been used. No fuel has touched them. I don't remember if I even opened them to set the float levels. BUT... they were stored in a humid basement for several years before I moved to a civilized climate. So, the magnesium housing is tarnished on the outside and the plating has deteriorated on a few of the levers and such. Pretty minor stuff from what I can see.
My question: is there is anything special I should do or check other than inspecting for corroded parts and normal setup as I prep these for service? |
72hardtop |
May 30 2019, 02:42 PM
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#2
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Member Group: Members Posts: 120 Joined: 11-September 13 From: Seattle/HB Ca./Fujieda-Japan Member No.: 16,378 Region Association: Pacific Northwest |
At your altitude stay with the 28mm vent size combined with 47.5 idle jets, 120 mains, 200 air corrector jets, F11 tubes, Float height 10-11mm (w/gasket in place ball NOT depressed), fuel pressure no more than 3.5psi, float drop 28-32mm
As for LM-2 readings.... LBI it by ear don't use LM-2 for adjusting. End result should be in the 13-14AFR range at idle. Timing should be at min 7BTDC at idle (28BTDC full at 3200rpms) vac hose off. WOT - 12.5:1 - low 13.2:1 or so Part throttle/cruise....16-17AFR Load = Throttle position A 16-17AFR at part throttle/cruise is cooler running than 13AFR at cruise. No lean tune tuning with centrifugal only distributor. Get an SVDA on it. |
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