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Red Lining 200 1978

posted by  Visiondark on  Thu Jan 15 13:08 CST 2004
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A possibly silly question here. 78 B21 engine, anyone offhand know the redline for that motor? It has the GT dash in it and doesn't state a redline on the tach. I usually keep it between 2500-3500 for average driving and 3000-4000 to accelerate quickly on a rare occasion. Thanks








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    Red Lining 200 1978

    posted by  someone claiming to be bosozoku on  Fri Jan 16 01:23 CST 2004 [RELATED]

    I thought the redline on all of the motors, from B20 onward, was 6500 for short periods of time, and 6000 continuous. My parents' '74 142 had the "yellow zone" on the tach begin at 6000, and the "red zone" begin at 6500. My 240 wagon has an open red zone starting at 6000, and a closed red zone beginning at 6.5k. The engine seems to have a rev. limiter which cuts it out at about 6200rpm. The 142 was a B20, and the 240 is a B230F, but I'm guessing that the B21's are rated the same by Volvo.
    .
    -b.








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      Red Lining 200 1978

      posted by  Visiondark on  Fri Jan 16 07:57 CST 2004
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      Thanks very much for the info. My wife's '97 850 redlines at 6500 as well, wasn't sure how that was and it's not like I planned on taking my older motor up that high. But wanted to be safer than sorry in case I ever accidentally stomp on it or slip a gear.

      Thanks again, Justin








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        Red Lining 200 1978

        posted by  someone claiming to be bosozoku on  Fri Jan 16 09:19 CST 2004 [RELATED]

        Even though my car's old, I occasionally take it up to 5,500rpm and
        hold it there for a minute or so. This is known as an "Italian
        tuneup," and helps blow carbon and other accumulated junk out of
        the combustion chambers. After this procedure is done, the car
        generally idles more smoothly than before. YMMV, of course.
        .
        -b.







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