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Thread: Distributor Mod - Cam Sensor Stealth Ram

  1. #11

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    Today we bench tested the cam sensor using the modified distributor only, no ECU. My question is, what is the supply voltage to the sensor coming from the ECU? What is the value of the pull-up resistor? In testing, I used +5V supply voltage, and a 1000 Ohm pull-up resistor to get a square wave pattern on the scope. Using a variable speed drill motor to turn the distributor, we achieved a narrow square wave. Difficult to get a steady RPM and a consistent wave.

  2. #12
    Join Date
    Dec 2009
    Location
    Connecticut
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    22,086

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    Quote Originally Posted by Darrell Buehl View Post
    My question is, what is the supply voltage to the sensor coming from the ECU?
    The Holley ECU has +5V, +12V & Ground sensor supply pins.
    http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual - Pin-Outs, Section 2.1, Page 6)
    http://forums.holley.com/showthread....3598#post53598 (Wiring Additional Sensors - HP & Dominator ECU)

    What is the value of the pull-up resistor?
    You'll have to contact Holley Tech Service (LINK) for that information.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #13

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    Now that we have tested our Hall-Effect cam sync distributor, it's time to complete the ignition. We have installed a 60-2 Hall-Effect Holley crank trigger and plan to use the Avenger ECU to control the ignition system. To rig this system, we will need a coil and an ignition box. My customer has a Mallory Pro-Master coil and is considering an MSD 6A box. However, the Holley Wiring Manual only shows diagrams for MSD, Holley and Crane 6AL type systems, no surprise there. It would seem a waste of technology not to mention money on an ignition box, that would not be using most of the features such as an MSD6AL-2. Your thoughts & suggestions please.

    Do you or Holley have dimensions for the 271R960A harness? Thanks.

  4. #14
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    22,086

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    Quote Originally Posted by Darrell Buehl View Post
    My customer has a Mallory Pro-Master coil and is considering an MSD 6A box. However, the Holley Wiring Manual only shows diagrams for MSD, Holley and Crane 6AL type systems, no surprise there.
    What's the difference? They're all wired the same way.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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