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block heater

  1. Cummins Tech Section
    I have some ideas, but is it one thing or many things that make these 4bts so hard to start in the Winter? I assume: Cold air is harder to compress further Cold air wont be as high a temp at the top of the stroke Batteries dont put out the amperage at Cold temps Cold oil is harder...
  2. Cummins Tech Section
    Got a question, My engine came with a block heater but the guy who pulled the engine from the bread truck cut the wire mid length and trashed the plug. Im trying to wire a new plug on the wire and Looking at the end that screws on to the block, it appears that either wire can go to hot or...
  3. Cummins Tech Section
    hello, new here, first posting. am wondering if anyone has a part number or, lacking that, the dementions of the o-ring seal for the round block heater that mounts in a core plug hole. any help will be greatly appreciated. thanks, bill. (ps. 4bta)
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