Reply to "Weber Carbs, timing advance"

bosswrenchMember

Thanks for the backup, Doug- its been awhile since I played with Webers. If I ever get my enthusiasm revved up again and finish my home-made side-draft intake manifold for a set of brand new 48 DCOE carbs, I will definitely be calling you.

On IR vacuum advance, I found that 'prettifying' the motor with unnecessary AN lines (rated at 3000 psi burst pressure) is counter-productive. Using a plain 1/8" ID rubber hose from the Weber intake to a dizzy vac adv worked fine, while 'other' plumbing I tried gave radically different results. I can only assume my 18" long rubber hose acted as a damper for the IR intake's violent pulsations, while more rigid lines faithfully transmitted every pulse and confused the mechanical advance mechanism. Ultimately, I found only one (1.0) hose was necessary.

3/14/2112:24 PM

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