Beltfed Posted January 10, 2013 Share Posted January 10, 2013 Can someone tell me how much vacuum I can expect the v12 Zephyr engine to make? Health unknown. Just finished repairing the wiper motor and one wiper tower, after plating both. I have my test vacuum pump set at 8 in. Hg and their slow. Thanks. Link to comment Share on other sites More sharing options...
nearchoclatetown Posted January 11, 2013 Share Posted January 11, 2013 Any engine in good condition should pull 18-20 inches of vacuum at idle. Do a google on vacuum gauge charts. Link to comment Share on other sites More sharing options...
rons49 Posted January 13, 2013 Share Posted January 13, 2013 Any engine in good condition should pull 18-20 inches of vacuum at idle. Do a google on vacuum gauge charts.for every 1000 ft elevation expect 1 Hg less. Link to comment Share on other sites More sharing options...
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