>Your post about vacuum came in just after I sent my Zemco post. My two bus >installations were on a '72 and a '84 (current). Both had sufficient >vacuum for the Zemco units. In other words, the cruise would hold full >throttle whenever necessary. Perhaps the Zemco design requires very little >vacuum. Could well be-- I bow to the voice of experience. I wonder if it might have had a built-in vacuum reservoir, as I had discussed before? >I agree about the sensitivity adjustment. Yes, the Zemco has one. Good to hear. I'd like to put one on a bus... and another on my '66 Mustang, which is quite zippy. Be nice if I could install two identical units, and adjust to fit.
>I disagree about the vacuum canister. I think that the vacuum motor always >leaks so as to make it fail-safe. (!!) Uh... wouldn't this tend you make your exhaust valves "fail-certain"???
>Thus, while the canister may help at >first, it probably wouldn't last on a long hill. Besides, on neither of my >bus installations did I see any sign of running out of vacuum. That's the best news of all-- I was mostly worried about lack of vacuum. Sounds like it's a non-problem on Type-4 engined VWs. Mike, do you happen to know the model number of the unit you used? Or, maybe have a phone number or location for Zemco? Thanks, Steve Maher smaher@gi.com '80 V6anagon '71 VW Transporter
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