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Thread: Spark dwell time

  1. #21
    Tuner in Training
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    Sep 2011
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    I am currently running drifter coils in my car at the moment and as best as I can determine they work exactly the same as the ford ones despite apparently having slightly more windings and better insulation. The supplier of these coils can not tell me the ideal dwell time per volt.

    Supplier --> http://www.autotradqualityparts.com....ncluded/268245

    I think I will have to set up an oscilliscope to measure the current in one of these coils while the car is idling. I should then be able to increase the dwell time until the coil charging slope shown on the oscilliscope flattens out indicating that the coil is fully charged.

    Then I can compare this coil with custom dwell time to the stock ford coil and the stock dwell times

  2. #22
    Advanced Tuner
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    Feb 2010
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    1mm preload doesn't really mean much. Unless you have tested is with an air supply and gauge you won't have and indication of cracking pressure or pressure to fully open.

    You can test and adjust this on the car but it won't help a bad port job.

  3. #23
    Advanced Tuner
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    Oct 2011
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    Get yourself a mityvac kit. Awesome for setting/testing actuators.

  4. #24
    Advanced Tuner JETURBO's Avatar
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    Feb 2013
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    519
    Use hole eclipse as reference benny

    Half a hole preload is normally a good start with plenty of D/C to play with but if the case requires it as far down to a 1/4 preload can work well but again a bad port job just makes everything crap to work with because u just cant tune out bad hardware issues

    Also benny 22 psi in hard is a huge wack and i assume u know what your doing but there is alot to be said about timing power vs boost power and keeping an engine in one piece, but other than this u may find a lower desired may help with the total duration boost level
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  5. #25
    Tuner in Training
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    Sep 2011
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    Thanks Guys for the feedback.

  6. #26
    Potential Tuner
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    Feb 2019
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    1
    Quote Originally Posted by Eric@HPTuners View Post
    Wait 10 minutes and update.
    Eric, I am currently trying to create a spark cut launch control. I have read that setting a dwell time of 0 is essentially that. If that is correct then wouldn't a dwell time vs rpm with a trigger of clutch depression or wheel speed do what I'm trying to accomplish? And if so how would I go about getting such table?