MGB MGA Austin Morris recurved distributors, lucas, electronic ignition british leyland Advanced Performance Technology

For maximum performance from your British Sports car engine the timing of the spark must be accurate, and when compression ratio and camshaft in particular are changed a recurved distributor is essential.

APT favors a brand new Lucas unit, these are re-curved for us by Aldon automotive who probably supply 75% of the re-curved distributors for British cars worldwide.

Maximum compression ratio for any road car running today's pump gas should be at the most 9.6:1
(unless the car is always at above 3000 feet elevation).

For road cars with less than 10.0:1 compression ratio you should use a vacuum type distributor, to make sure there is enough advance at idle and cruise.
Use manifold vacuum if possible, only switch (in most cases) to "ported" vacuum if the engine rattles for a couple of seconds when you go quickly from cruise to full throttle.

If your compression ratio is above 9.6:1 you may be best to go with the non-vacuum road performance type distributor. Aldons refer to these as "yellow" and race as "red".

Part Number	Description	Pkg'd	Price US $
101BR.......	Non Vacuum Lucas Race Distributor (45D type)	EA	$364.84
101BR2......	Vacuum Lucas Performance Distributor (45D type)	EA	$368.86
45D-VAC	Lucas 45D Std. Vacuum Distributor MGB MGBGT MgC	EA	$269.00

Part Number	Description	Pkg'd	Price US $
700-0231....	Crane XR700 Electronic Ignition System, Replaces Points	EA	$142.48
IGN-1.......	Pertronix Ignitor For 23/25D4 Type Distributors	EA	$109.50
IGN-11.......	Pertronix Ignitor For 23/25D4 Type Distributors, Positive Gnd	EA	$129.95
IGN-2.......	Pertronix Ignitor For 45D4 Type Distributors (Red Heel)	EA	$109.50
IGN-3.......	Pertronix Ignitor For 45D4 Type Distributors (Blue Heel)	EA	$109.50
COIL1.......	High Performance Street Coil, up to 7500 RPM	EA	$49.50
COIL3.......	Crane Extra Heavy Duty Race Coil (all ignition systems)	EA	$85.60
COIL4....	Lucas Sports Coil MGB MGBGT MgC	EA	$46.00

Part Number	Description	Pkg'd	Price US $
BP6ES.......	NGK Extended Tip, Copper Core Spark Plug (all)	EA	$3.47
BP7ES.......	NGK Hi-Performance Plug, Extended Tip, Copper Core	EA	$4.98
BP8ES.......	NGK Race Plug, Extended Tip, Copper Core	EA	$4.98
BP9ES........	NGK (cold) Race Plug	EA	$4.98
C25D	Condenser For Early, Lucas 23D Distributors	EA	$6.75
C4..........	Condenser For Later Lucas 45D Distributors	EA	$10.60
CAPDC101	Side Entry Distributor Cap, Lucas 23D, Lucas Brand	EA	$29.95
CAPDC101-X	Side Entry Distributor Cap, Lucas 23D, Brand X	EA	$10.00
CAP108......	Top Entry Distributor Cap, Lucas 45D, Lucas Brand	EA	$19.95
CAP194......	Side Entry Distributor Cap, Lucas 45D Distributors (Special)	EA	$35.99
CS8.........	Points Lucas 45D Distributors (Red Heel) Quick Fit	EA	$6.65
DSB101	Points Set Lucas 23D Distributor, "Quick Fit"	EA	$6.41
DSB191......	Points For Lucas 45D Distributors (Blue Heel)	EA	$14.27
LBP089......	Lucas Non Vac 45D Back Plate Complete w/Points	EA	$22.76
RA1	Rotor Arm For All Lucas 23D Distributors	EA	$5.99
RA4.........	Rotor Arm For All Lucas 45D Distributors	EA	$5.90

Ignition & Distributors, MGB MGA