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TR2/3/3A Lucas Ignition Coil for TR3A

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angelfj1

angelfj1

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Apparently the correct ignition coil for a TR3A is a Lucas model HA12(Lucas part no. 45208A) See photos thanks to Don Elliott.

Does anyone know the difference between the HA12 and the LA12 (Lucas part no. 45207A) and the SA12(Lucas part no. ????)? I have an opportunity to acquire an LA12 and an SA12, but I have no idea what they looks like or their tech. specifications.

Thanks
 

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Frank - The LA was their low performance model and SA is the competition of sports model. Mine is HA (high perpormance). Why they would do these three and what the advantages are in certain cases, I can't say, but don't go for LA12 model (low).
 
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