Assorted Ignition Modifications

The Original Ignition System

Distributor: Lucas DM6A

Coil: Lucas HA 12 volt

Spark Plugs: Champion UN12Y

Modified Ignition System

Distributor

Having converted the Bugeye to electronic ignition with a Crane system, I knew that I wanted to use electronic ignition with the Bloody Beast, but unlike the Crane system, I wanted to use a system that would be housed in the distributor such as a Pertronix. After doing some research I decided to replace the entire distributor with a newly introduced Dutch product, the 123 Distributor. The United States distributer is https://123ignitionusa.com

More information about the installation is provided in this website post: https://valvechatter.com/?p=12431

One appealing aspect of the 123 is that the advance curve is determined by simply adjusting the settings by turning an adjustment on the outside of the distributor and “clicking” it into place. Sixteen curves are available from which to select. Since my purchase the vendor has introduced a programmable bluetooth distributor that can be managed with a laptop. The model number of the unit I used is 123/GB-6-R-V.

For initial set-up, I chose the recommended “B” setting. While the distributor is a “drop-in” in for the BJ8 with an electronic tach, a kit is supplied to adapt it for the mechanical tach drive of the BT7. The shaft did need to be drilled and the drive dog from the original Lucas unit installed with a few spacing washers. My unit was supplied by a German vendor Brits’N’Pieces.

123 Distributor

123 Distributor

Coil

Rather than the original Lucas Coil, or Lucas Sports coil, I decided to go with the Pertronix Flame Thrower Coil in the Bloody Beast. The coil was originally mounted on top of the generator, but since I am using an alternator, that mounting position was not available. I mounted the coil on the vertical upright shroud support post.

Pertronix Flame Thrower Coil

Pertronix Flame Thrower Coil

 Ignition Wiring

To complement the Pertronix Flame Thrower Coil, is used Pertronix ignition wiring as well.

Ignition wiring

Ignition wiring

 

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Chapter 76 Week Forty-Six October 29, 2007

I am not quite ready to start the engine because I am waiting on my custom made propshaft, currently being fabricated by Dale Engineering. However, there were some close to final matters that needed attention as the day to fire up the engine approached. Jack Harper from Coachworks, Ltd. who assembled my rebuilt engine, came to the house to assist with readying the engine.

Our first step was to “pump” some engine oil into the engine to ensure that everything was coated. Jack attached a compressed air canister with two quarts of oil to the oil pressure pipe union and then forced the oil into the engine with air pressure. As we neared the end of the oil transfer one could see the oil emerging from the top of the rockers and then the end of the transfer was signaled by a large “burp” that one could easily hear.

Jack Harper engine oil

We made sure the pointer and timing mark were aligned and then went about checking the valve gap for the assembly. I used the starter to turn over the crank as we checked each rocker/valve. We then secured the Capesport Alloy rocker cover and added another 5 quarts of oil. The rocker cover was sourced from Cape International.

Capesport Rocker Cover & Ignition Wiring

The oil I chose to use is Valvoline racing oil, 20-50 with ZDDP.

Valvoline 20-50 Oil

I had taken the NGK spark plugs out to rotate the engine. We put a little anti-seize on each plug, checked the gap and re-installed each one.

In recent months the 123 distributormanufactured by a Dutch company, 123 Ignition, has received some very good press. I had originally planned to use a Mallory Unilite distributor, but I decided to give the 123 unit a try.  One appealing aspect of the 123 is that the advance curve is determined by simply adjusting the settings by turning an adjustment on the outside of the distributor and “clicking” it into place. For initial set-up, I chose the recommended “B” setting. While the distributor is a “drop-in” in for the BJ8 with an electronic tach, a kit is supplied to adapt it for the mechanical tach drive of the BT7. The shaft did need to be drilled and the drive dog from the original Lucas unit installed with a few spacing washers. My unit was supplied by a German vendor Brits’N’Pieces. Jack installed the distributor and I installed the Pertronix igntion wiring to the plugs and to the Pertronix “Flamethrower” coil. The coil was previously mounted vertically on the shroud brace. Several of the wiring leads on the original wiring harness for the ignition were no longer needed so I simply used plastic ties to fold them down and secure them, in case they might be needed at some point in the future.

123 Distributor

123 Distributor drive dog

123 Distributor.  Purchase Information and instructions.

My next step was to add coolant to the radiator. I used Prestone 50/50 premixed formula. Fortunately no leaks!

I had been using an old battery for checking out electrical function throughout the restoration process, but it was now time to buy the battery I would be using in the vehicle when it was a road car and not a garage car! I decided on the Optima. I purchased it at the local Batteries Plus store. They are not cheap at about $160 dollars, but I like the idea of the no-leak gel in the boot of a car. The model number I purchased was: Part Number: 34 (8002-002) RedTop®; Battery; Group 34; Cold Crank Amps 800; Crank Amps 1000; Reserve Capacity 110; Ampere Hour 50; Top Terminal; L-10 in.; W-6 7/8 in.; H-7 13/16 in.; UNBOXED. The battery was secured in place with the battery fixing bar and rods.

Optima Battery

Because the Smitty Bell housing fit a little high in my car????, I custom fabricated a gearbox cover extension to provide a little more room for the housing. This also required custom fitting carpet. I had ordered a couple of extra yards of carpet when I ordered my interior from Heritage Upholstery and Trim for this purpose. I first covered both sides of the cover with Dynamat Extreme and then cut and glued the carpet to the cover.

Gearbox cover extension 1

To assist with interior cooling and weight, I ordered a fiberglass gearbox and propshaft cover from British Car Specialist. The original cover was metal and mine was too far gone from rust. Using a fiberglass cover also made it easy to fill the original hole for the side shifter and cut a new hole in the center for the Toyota gear shift. I used an MGB trim ring and rubber seal for the gear shift lever sourced from Moss Motors. Using a helpful hint from Doug Reid, “Mr. Finspanner,” some JB Weld was used to glue four “T” nuts to the bottom of the fiberglass cover so that machine screws could be used to mount the ring, rather than sheet metal screws that overtime would fail to secure tightly in the fiberglass. 

Ignition

Spark Plugs

I don’t know if I will stick with the Champion plugs or not, but Mike Gassman installed Champion RN11YCA plugs when the engine was rebuilt and they remain in the engine at this point.

Champion Spark Plug Jag MK2

Champion Spark Plug RN11YC4 Jag MK2

Distributor

There are several options available for upgrade to an electronic ignition. I used a 123 Electronic Distributor on my 1960 Austin Healey 3000 and was very pleased with the installation so I ordered the same distributor designed for the Jaguar XK motor – negative ground. The company that produces the distributor is located in the Netherlands. This is the link to their website: http://www.123ignitionusa.com/jaguar.html.

I ordered the “Jag 6-R-V” from Classic Jaguar, 9916 Hwy 290 West, Austin, TX 78736     (512) 288 8800 Austin, TX. http://classicjaguar.com/cj/ign_sys.htm for $425.00.

This web site provides some useful commentary on the 123 distributor, although it should be clear that I am using the Jag specific model, not the generic british model.

http://jaguaretype.wordpress.com/home/technical/123-distributor/

123 Distributor

123 Distributor

 

 

 

 

 

 

 

 

 

Directions for Installation Provided with the Distributor

WITH THE OLD DISTRIBUTOR STILL IN PLACE

1. Mark the output towards cylinder #1 on the cap.

Remove the low voltage cable from the distributor to the coil, and remove the cap.

Now ask someone to crank the starter, and make a note: is the rotor rotating clockwise (CW) or is it rotating counter-clockwise (CCW)?

2. Crank the engine in its normal direction until you see that the rotor points toward the mark you made for cylinder #1, and verify that the static timing-marks of your engine align.

Do not rotate the engine anymore!

3. Check the firing order of the cylinders.

Use your workshop manual, or follow the cables from the cap to the spark plugs.

You start with cylinder #1, and remember to count in the direction that you have found earlier.

Make a note of the firing order, too. E.g. ‘1-4-2-6-3-5.’

4. Check which advance-curve is required for your engine. Use your workshop manual, check the model number of the existing distributor. Also compare the curve-listings for the various models in this manual.

 

OUT WITH THE OLD DITRIBUTOR, IN WITH THE 123 IGNITION!

5. Turn the ignition off, and (with the engine still in the static position for cylinder #1) and remove the old distributor.

6. Using an 8mm Allen wrench, open the cap at the side of the 123 Ignition. Rotate the micro-switch to select the proper advance curve using a small screw driver. Close the cap tightly.

123 Ignition JAG-6 Curves

123 Ignition JAG-6 Curves

7. Mount the unit carefully, and ensure that the drive-dog mates correctly. Find a position so that the vacuum nipple and cables come out conveniently. Fasten it in such a way, that you can still rotate the new distributor.

8. Follow the appropriate wiring diagram on the last two pages of the manual, but leave the black wire unconnected for now.

9. Turn the ignition on. A timing LED shines through one of the six holes in the aluminum disc. Rotate the body until the LED is “off.”

Now slowly rotate the body OPPOSITE to the direction that you have found under point 2, until the green LED just lights up. While turning the body, also press the rotor in the same direction to remove any free-play in the drive gear. Now, tighten the 123 Ignition securely.

10. Connect the black wire to the coil. Connect the spark plug leads in the proper sequence to the new cap (see point 4), starting with cylinder #1, to which the new rotor is pointing. Also connect the high voltage lead from the coil to the center position of the cap. Attach the cap to the 123 Ignition. Keep low-voltage wiring well away from the high-voltage cables and from moving parts. Do not connect the vacuum tube yet.

123 Ignition Wiring Diagram

123 Ignition Wiring Diagram

11. You can now start your engine. Use a stroboscope to adjust the maximum advance for your engine. If that is correct, you can attach the vacuum-tube to the nipple of the 123 Ignition with the ‘V’ option.

Coil

I also ordered the coil recommended by Classic Jaguar as an upgrade for the original unit. It was available for $35.00. It is an Intermotor Sports Coil.

Intermotor Sports Coil

Intermotor Sports Coil

Intermotor Sports Coil

Intermotor Sports Coil

 

 

 

 

 

 

Extension Assembly for Coil Bracket

There is a small bracket that mounts to the coil bracket that is used to attach the coil to the front of the cylinder head.

Coil Extension

Coil Extension

Coil Extension

Coil Extension

Bracket Extension

Bracket Extension

 

 

 

 

 

 

Ignition Wiring

Xks Unlimited fabricates an ignition wiring loom with Petronix wiring and press on leads for the cap of the 123 distributor. While expensive, the loom will result in a neat package across the top of the motor.

Pertronix Ignition Wiring Loom

Pertronix Ignition Wiring Loom