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  1. SSVDP

    Undersquare vs. Oversquare Engines

    In simple terms engine output at all speeds is determined by intake valve size or actually circumference. Even at low rpm it is the most important factor. And intake valve size is basically determined by the bore size. F1 engines are impressive but not as impressive as the budgets to obtain that...
  2. SSVDP

    1983 Plymouth Scamp GT - Lacking in Performance

    Exactly! ThAt looks like the connector but I remember it up front near the fan - after 30'years I just don't remember that detail. Just release the oxygen sensor wires & put them in their own separate connector. And you should always add a generous amount of dielectric grease.
  3. SSVDP

    1983 Plymouth Scamp GT - Lacking in Performance

    There was a service bulletin on these to move the exhaust oxygen sensor wires into a separate connector. The problem was voltage tracking from battery to the oxygen sensor which then would lean out the carb. Yep! I worked in Chrysler engineering & a tech I was working with figured it out...
  4. SSVDP

    1983 Plymouth Scamp GT - Lacking in Performance

    There was a service bulletin on these to move the exhaust oxygen sensor wires into a separate connector. The problem was voltage tracking from battery to the oxygen sensor which then would lean out the carb.
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