L20B Matchbox

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L20B matchbox Datsun factory Electronic Ignition came in these USA vehicles:

• 1979 200SX (S10)
• 1979 Datsun 510 (A10)
• 1979 Datsun 620
• 1980 Datsun 720

If buying used, there are two things to watch out for:

• Advance plate bearing gone bad ($75)
• Vacuum advance canister not holding vacuum ($30-$100)

CAUTION: These often go bad after 20 years. Inspect carefully before buying.

If buying new, you will need these used:

• Timing plate
• Distributor Support (pedestal base)

The support Pedestals is different than L20B points type, though looks similar the spacing is different:

Because the L-series uses an offset-slotted drive, it can be fitted in only one position. This makes getting the correct distributor, pedestal and timing plate very important. It is possible to remove and "re-index" the driveshaft inside the engine, but not recommened. It is possible to use a Z20 matchbox, but all the same problems apply.