How many ohms?

Discussion in 'Electrical' started by bobba, Feb 16, 2014.

  1. bobba

    bobba New Member

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    hello all

    Just wanted to see if anyone knows what ohms a 97 dyna fxd wide glide evo engine runs as stock?
     
  2. Breeze3at

    Breeze3at Well-Known Member

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    Ohm's is the resistance. There are many different ohm measurements in a Harley's electrical system. What are you testing?
     
  3. Jack Klarich

    Jack Klarich Expert Member

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    Welcome to The Forum, if you are talking about ignition read here
    For Evolution® and Shovelhead® applications, ballast resistance is used to limit coil current. In these systems, the resistance of the coil primary windings serves as the ballast resistor. Primary resistance is typically 3 ohms. Newer Twin Cam 88® applications use a coil with very low (about .5 ohm) primary resistance. Coil current is limited electronically within the module by restricting the charging time.
     
  4. bobba

    bobba New Member

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    I was looking for a coil.
    Looked every where but could not find a sure answer.
    I thought it was 3 ohms but i have found in my build better not to make assumptions.

    Thanks for the help lads
     
  5. tourbox

    tourbox Senior Member

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    If you are still running the stock electronic ign. then the 3 ohm coil is correct. If it was converted back to a points ign. then you need a 5 ohm coil.
    tourbox
     
  6. r_k_dragon

    r_k_dragon Active Member

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    bobba,

    I don't suppose you'd be interested in the service manual for 97 dyna glide models. Slightly used.
     
  7. bobba

    bobba New Member

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    thanks for the help
    Sorted out the issue.
    Now on to the next one
     
  8. tourbox

    tourbox Senior Member

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    Well which coil did you need?
    tourbox