The HS45D4 distributor is compatible with these standard Lucas parts:

Distributor: Lucas 41427, 45D4, 41630
Rotor: Lucas 54422803, DRB104C, (superior red rotor included with distributor)
Distributor Cap: Lucas 54427109, DDB108

Replaces 4-cylinder Lucas 45D4, 48D4, 54D4 Vacuum-advance Distributors

We inspect each distributor thoroughly; everything is checked, adjusted, lubricated, etc. We then set and test the advance curve on a precision distributor testing machine.

Installing the HS45D4 Distributor
Rotate the engine until the rotor is pointing at No.1 Cylinder's spark plug wire. Remove each spark plug wire from the old distributor cap, one-at-a-time, and insert it into the new distributor cap in the same location and order (cylinders 1-3-4-2, counter- or anti-clockwise).

Remove the old distributor and remove its clamp. Coat the new distributor's shaft and O-Ring with motor oil before sliding it into its hole. Look down into the engine's distributor hole to see how the distributor drive slot is oriented and turn the distributor shaft to match it. You might need to tap the distributor's rim gently to get the O-Ring started into the hole. Work the shaft down all the way, turning the rotor gently, as needed, until the distributor shaft gear settles into its slot and the rotor will no longer turn.

Turn the distributor body until the rotor points to the spark plug wire of No. 1 Cylinder. Place the cap on the new distributor. Tighten the distributor clamp enough so that the distributor can't turn on its own, but you can still turn it by hand.

Timing the HS45D4 Distributor
Use a stroboscopic timing light. Timing should be set initially to about 24° BTDC at 3,500+ RPM, vacuum hose connected. Firing order is: 1-3-4-2, counter-clockwise (anti-clockwise). The ignition timing should be checked with the engine running, using a stroboscopic timing light, ensuring optimum engine performance and economy. Paint a small line of white paint on both the reference pointer and the appropriate mark on the timing scale to make them more easily seen. With the engine running at the specified speed, the appropriate timing mark should be in line with the reference pointer. Rotate the distributor body clockwise to advance the timing, or counter-clockwise to retard it. Tighten the distributor clamp. Reconnect the vacuum line to the distributor's vacuum canister port.

To measure coil primary resistance: Label and remove all wires to coil ( + or - ). Using a common digital multimeter in the 200 Ω mode, cross the red and black leads of the Ohmmeter. Allow 10 seconds or more for the reading to settle and write down the reading. Still in the 200 Ohm mode, measure between coil’s + and - terminals. Allow a few seconds for the reading to settle, until it stabilizes. Subtract the previous reading, taken with the leads crossed, to compensate for Ohmmeter’s inherent resistance. Do not use a low-resistance coil, such as the MSD or Accel coil; they don’t have enough primary resistance for this application.

Test the charging system's maximum voltage: If the charging system voltage, measured at the coil's + terminal, is more than 13.9 volts at any RPM level, the voltage regulator likely needs replacing or a 1.4 Ohm ballast resistor should be wired between the coil's + terminal and the red HotSpark ignition wire. Too much voltage can damage the ignition module and other electronic components.

Austin Rover (Leyland) (See also Daimler, Jaguar, MG, Land Rover, Range Rover, Triumph)
Points-based Models:
1974-on Lucas 45D4, 54D4, 4-cyl CCW, centrifugal/vacuum-advance

Hillman
1974-79 4-cyl all models - Lucas 45D4

IHC Truck
1957-64 4-cyl all models - Lucas 45D4

Innocenti (Italy)
1974-on MkII & III, Mini 90, Miini 120 - Lucas 45D4 distributor, 4-cyl, CCW, vacuum-advance

Land Rover
1977-89 Lucas 45D4 distributor, 4-cyl, CCW, vacuum-advance

Lucas Distributors
45D4, 48D4, 54D4, 4-cyl, CCW

Matra (See Talbot)

MG
All 4-cyl all models - Lucas 45D4
1974-83 Lucas 45D4 distributors, 4-cyl, CCW, all models

Morris (See Austin Rover)
1974-75 4-cyl all models - Lucas 45D4

Range Rover
1977-79 4-cyl 2-liter - Lucas 45D4

Reliant
1974-on Fox, Kitten, Robin, Rialto - Lucas 45D4 distributor, 4-cyl, CCW, vacuum-advance

Sunbeam/Talbot
1974-76 Sceptre, Rapier - Lucas 45D4 distributor, 4-cyl, CCW, vacuum-advance

Triumph
4-Cylinder Models:
1974-on Dolomite: 1300, 1500 Toledo, Spitfire 1500 - Lucas 45D4 distributor, 4-cyl, CCW, vacuum-advance

Vanden Plus
1975 4-cyl Princess 1500 - Lucas 45D4

Wolseley
1974-75 4-cyl all models - Lucas 45D4


 

 

4-cylinder Lucas (45D4, 48D4 and 54D4 distributors) LUCAS 45D4 distributors: Austin: Allegro 1100, 1000, Mini Van + Pickup 1100, Clubman 1000, 1300 GT, 1800 S, 850 Mini, 1000 Mini, 1100, Innocenti 1000/1001, Relian BMC: Austin 850LC, 998 Mini, 850 Van + Pickup, Austin 1000 Mini, Austin 1800, Austin Maxi 1500, Austin Princess 1300/1800, Austin Allegro 1300HC, Austin 1300 France Morris Marina 1.3/440/575/1.8GT+HL, Morris 1.3, 1800 MKIII, Mini 1275 Leyland Apache Land Rover: 2.25 Leyland: Marina 1.8TC/II GT/HL 1.0, Midget 1500, Toledo 1500 Lotus: Elite, Eclat, Esprit MG: 1300, Midget 1500, B18V Wolseley: 18/22 Reliant: TW9 + E, Robin, Kitten Rootes Group (Chrysler/Dodge/Hillman/Singer/Sunbeam/Talbot): Commer, Carier, Imp, Chamois, Imp Sport, Hunter 1.5/1.7, Rapier 1.7/H120, Alpine, Avenger 1250/1500/1600, Tiger II, Pay Kan 1.7, Vogue, Sceptre Rover: 1800 HC Triumph: Dolomite 1854, Spitfire 1500

 

www.Hot-Spark.com/Installing-HS45D4-Distributor.pdf

 

Hello,

This is to express my thanks for the excellent service you recently provided me. The Hot Spark electronic distributor has behaved faultlessly during our 17,000 miles trip through South and Central America.
 

Kind regards,

Ross Letten
Australia

 

International Buyers – Please Note:

• Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.

• Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying.

 

 

HS45D4 Distributor	HS45D4 Distributor with 3LUC4-45D electronic ignition replaces Lucas 45D4 4-cylinder  vacuum-advance distributors
Replaces most 4-cylinder, vacuum-advance, points-based Lucas 45D distributors	Replacement distributor for Lucas 45D4 4-cylinder vacuum-advance distributors. Replaces stock Lucas 4-cylinder 45D4 distributor. Requires vacuum source from carburetor or throttle body. With 3LUC4-45D electronic ignition installed, instead of points/condenser. Everything you need included - no external ignition box required. Timing Set At: 30-32° BTDC @ 3,500+ RPM (full advance), vacuum hose disconnected and plugged. Use stroboscopic timing light, no load on engine (car sitting still). Application: Replaces 4-cylinder, vacuum-advance Lucas 45D4 distributors. Requires available vacuum source on carburetor or throttle body. For 12V negative ground electrical systems only. Includes rotor, distributor cap, distributor clamp and everything you need - no external ignition box required.   Coil Required: Stock Lucas 3+ Ohm points coil OK. Coil must have 3.0 Ohms or more internal primary resistance. Bosch Black Coil recommended. In stock: Available:
Item Number: HS45D4 Price: US $139.95 Shipping: US $14.00, via USPS Priority Mail (2-3 business days) to anywhere in the USA Replaces most 4-cylinder, vacuum-advance Lucas distributors. Item Name: HS45D4 Distributor with 3LUC4-45D Electronic Ignition We assemble each distributor; everything is checked, adjusted, lubricated, etc. We set and test the advance curve of each distributor on a Sun distributor testing machine for optimal performance with vehicles using 4-cylinder, vacuum-advance, points-based Lucas 45D distributors. Ready to install. Includes cap, rotor, distributor shaft O-Ring and everything you need - no external ignition box required. Price: US $139.95 Price with Shipping Shipped within USA $123.95 USD Shipped to Other Countries $153.95 USD

 

 

 

Foreign Orders: Shipping discount available if purchasing multiple items.

 

 

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