Aldon Automotive Performance Distributors – Ford X-Flow 103FX1 With Contact Breaker Ignition

When modifying an engine with performance camshafts and often utilising twin side-draught carburettors, the standard distributor’s ignition curve frequently becomes inadequate. This mismatch between the ignition timing and the engine's altered characteristics results in diminished performance and compromised driveability. Aldon Automotive Performance Distributors address this issue by providing precisely calibrated ignition advance curves tailored to various states of engine tune.

These distributors are meticulously assembled using new Lucas or Bosch units, then dyno-developed to ensure optimal timing for modified engines. Many versions offer the option of a mechanical advance system, ideally suited for applications employing twin side-draught carburettors. Aldon distributors aren’t simply about increasing power; they're about restoring and enhancing the driving experience of your classic or tuned vehicle.

Aldon offers a range of options to match popular camshaft upgrades, ensuring compatibility and maximising performance gains. All distributors are available with the traditional contact breaker (points) ignition system. However, for increased reliability and consistency, many models can be specified with Aldon’s ‘Ignitor’ electronic ignition system. The Ignitor is designed as a fit-and-forget solution, seamlessly integrating within the distributor cap to preserve the original aesthetic of classic vehicles.

Beyond improved dependability, the Ignitor electronic ignition also contributes to enhanced engine driveability and overall performance. By eliminating the need for regular point adjustments and maintenance, it provides a consistent spark across a wider range of operating conditions.

Applications & Model Breakdown

Below is a detailed breakdown of Aldon distributor models and their specific applications:

• BMC ‘A’ Series Applications:
• 100AY: Non-vacuum distributor, suitable for most tuned 'A' series engines using camshafts such as Piper 270/285, Kent 266/276 & 286.
• 100AYV: Similar to 100AY but with vacuum advance (generally recommended for compression ratios under 10:1).
• 100AYS: Identical to 100AY, but features a distributor cap with side-exit HT leads – necessary for Sprite/Midget applications.
• 100AYSV: Combines the characteristics of 100AYV with a side-exit distributor cap.
• 100AYP: Uses the 100AY advance curve but incorporates a later-type drive dog for compatibility with ‘A’ Plus blocks in Metro applications.
• 100AR: Non-vacuum distributor designed for rally and race-tuned 'A' series engines, compatible with camshafts like 649, Sprint or Supersprint, as well as Piper 300/320 & Kent 296/310.
• 100ARS: Identical to 100AR but with a side-exit distributor cap.
• 100ARP: Combines the 100AR advance curve with a drive dog suitable for ‘A’ Plus blocks in Metro applications.
• BMC ‘B’ Series Applications:
• 101BY1: Vacuum advance distributor, designed as a replacement for original distributors on standard MGBs and Marina TCs with HS4 SU Carburettors. Note variations in vacuum connection points on later models (use 101BY2 if the vacuum pipe connects to the inlet manifold).
• 101BY1S: Identical to 101BY1, but with a side-exit distributor cap for specific pre-rubber MGB applications.
• 101BY2: Vacuum advance distributor suitable for standard MGBs and Marina TCs fitted with HIF4 SU carburettors, improving driveability while minimising 'run-on'.
• 101BR1: Non-vacuum distributor for tuned ‘B’ series engines using camshafts such as 714, 715, Piper 270/285 and fitted with side draught carburettors.
• 101BR1S: Identical to 101BR1 but with a side-exit distributor cap.
• 101BR2: Vacuum advance distributor for road-tuned ‘B’ series engines using camshafts like 714, 864, Piper 270/285 while retaining SU carburettors.
• Ford X/Flow and Twin Cam (All Lucas Based):
• 103FX1: Non-vacuum distributor for X/Flow engines with side draughts, retaining the standard ‘GT’ camshaft.
• 103FX1S: Identical to 103FX1 but with a side-exit distributor cap (often required for 1100/1300 engines with twin side drafts). Fitment may be affected by block skimming.
• 103FXY: Non-vacuum distributor suitable for tuned X/Flow engines using camshafts like A2, BCF1, Piper 270/285, Kent 234/244 in conjunction with side draught carburettors. Do not use a vacuum unit with side draft carbs.
• 103FXYV: Non-vacuum distributor for X/Flow engines with twin choke down draught carburetors where a vacuum fitting is possible.
• 103FXYS: Identical to 103FXY but with a side-exit distributor cap (fitment considerations as per 103FX1S).
• 103FXYSI: Identical to 103FXYS, fitted with an Aldon Ignitor electronic ignition system.
• 103FXR: Distributor for race-specification X/Flow engines – engine specification details are required.
• 103FXRS: Identical to 103FXR but with a side-exit distributor cap.
• 103TC: Non-vacuum distributor suitable for most twin cam engines, from standard to full race specification.
• Ford OHC (Pinto) – All Bosch Units & Ford V6 (Essex Type): (Full details available upon request.)

Please note that this is not an exhaustive list and Aldon Automotive offers a wider range of performance distributors. Contact us with your specific engine configuration for tailored advice.