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Thread: Ignition Advice

  1. #21
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    Nov 2019
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    Illinois
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    Thanks again guys for all your help on this. It's been about 20 years since I have had a "Hot Rod" and things have certainly changed. I'm trying to learn all of this since it seems to be the way to go now. I've talked to Rich at FAST Man EFI a few months ago, but at that time I was looking to go with a Sniper. Now that I'm looking to go MPFI, I'll contact him again. Mike

  2. #22

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    I'm here. Go to my website fastmanefi.com to send an email to me. 209-247-6497
    Last edited by fastmanefi; 01-30-2020 at 03:21 PM.

  3. #23

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    Quote Originally Posted by MikeP View Post
    Dual Sync Distributor - EFI Timing Control
    - Dual Sync Distributor - $350
    - 6201 6A Box - $233
    - 8253 Coil - $237
    - Total = $820
    I have a similar application. BBC, HP EFI, MSD 6A and dual sync distributor. What's the best reference to use for wiring? Ideally from the HP installation instructions. The MSD was previously used on a C950 system and worked fine. After some recent updates, the engine makes peak horsepower (~610) at 6000 RPM (with a carb). The more I search, the more confused I get! What’s confusing is that the dual sync has lots of info related to the Sniper, but nothing specifically that I can find for the HP?

  4. #24
    Join Date
    Dec 2009
    Location
    Connecticut
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    24,221

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    Quote Originally Posted by skips69 View Post
    What’s confusing is that the dual sync has lots of info related to the Sniper, but nothing specifically that I can find for the HP?
    https://www.holley.com/products/igni.../parts/565-200 (Holley EFI Dual Sync Distributor Instructions)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 11.8:1 comp, TFS R-Series FTI ported intake, BBK 80mm TB, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 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 MT tires.

  5. #25

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    Yes, I’ve seen this document. There are no wiring diagrams. Page 16: https://documents.holley.com/techlib...10555rev16.pdf. Would that be the wiring reference for my application?

  6. #26
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    Dec 2009
    Location
    Connecticut
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    24,221

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    What? Page 16 is for a non-ECU controlled timing application. The Holley Dual Sync Distributor is plug & play into the HP/Dominator EFI main harness.

    Originally Posted by Danny Cabral
    FYI: Holley EFI now sells their own Dual Sync Hall-Effect distributors (LINK).
    They're a small cap design, "plug & play" with Holley EFI, and no need for a modified Firing Order.
    The crank & cam sensor signals also provide sequential injection capability (MPFI applications).
    It's "plug & play" (into the 10-pin ignition connector on the EFI Main Harness) and requires a CD
    ignition box (Instructions). The MSD 6201 Digital 6A CDI box & 8253 HVC-2 coil are a great match.
    The MSD CD ignition box is wired as shown in the Holley EFI Wiring Manual:
    http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual - Figure 11, Page 20)
    https://www.youtube.com/watch?v=AM7r-DauCak (Holley EFI Dual Sync Distributor - YouTube Tech Video)
    A blank cap (LINK) is available, if the user decides to convert to Coil-Near-Plug/DIS later (no CDI box).
    Of course, this component can also be used as a crank and/or cam sync/oil pump drive unit.

    The Custom Ignition Parameters (in System Parameters) for the Holley EFI Dual Sync Distributor:
    Ignition Type ............. ― "Custom"
    Crank Sensor Type ..... ― "1 Pulse/Fire"
    Sensor Type .............. ― "Digital Falling"
    Inductive Delay .......... ― "100.0 usec" ( Synchronization info, adjusted per application.)
    Ignition Reference Angle ― "50°" ( Inherent rotor-phasing of this unit.)
    Cam Sensor Type ........ ― "Single Pulse" ( "Not Used" for TBI, unless CNP ignition.)
    Sensor Type .............. ― "Digital Falling"
    Output Setup Type ..... ― "Points Output" ( CDI box ground trigger.)
    Dwell Time ................. ― "2.0 msec" ( Do not set this to 1.5 msec!)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 11.8:1 comp, TFS R-Series FTI ported intake, BBK 80mm TB, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 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 MT tires.

  7. #27

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    Dual Sync plugs into the HP main harness. Points wire from the main harness goes to the CD box.

  8. #28
    Join Date
    Dec 2009
    Location
    Connecticut
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    24,221

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    Yes, the loose white Points Output wire (from the EFI main harness) triggers the MSD CD ignition box.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 11.8:1 comp, TFS R-Series FTI ported intake, BBK 80mm TB, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 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 MT tires.

  9. #29

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    Thank you for your resplies.

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