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B21A Zenith-Stromberg Carburetor Vacuum Question 200 1981

posted by  RLC on  Wed Apr 6 00:59 CST 2005
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I have 16" vacuum. I thought I should have more. What should I expect? Valve Clearances have been adjusted. I only have 151,000 kilometers on my 1981 244DL, with a B21A engine. Is it likely the Rings are already giving the engine problems?








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Thanks, gentlemen 200 1981

posted by  RLC on  Wed Apr 6 16:29 CST 2005
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B21A Zenith-Stromberg Carburetor Vacuum Question 200 1981

posted by  someone claiming to be Rhys on  Wed Apr 6 03:34 CST 2005 [RELATED]

That's about normal for a four cylinder engine. In the old days V-8's with mild cams saw about 19-21 inches.







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B21A Zenith-Stromberg Carburetor Vacuum Question 200 1981

posted by  shaka on  Wed Apr 6 02:45 CST 2005
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last visit: Sun Nov 24 12:12 CST 2013
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My B21A also and the vacuum sits at a steady 16 as well. Depending on your elevaton above sea level it may be lower than the book suggests. If the vacuum is steady with no fluctuations the engine is likely fine.
--
Dave Kenney North of Lake Superior 1983 242 291000km







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