Re­place 2G Al­ter­na­tor With 3G Al­ter­na­tor

Hot Rod - - Wrenchin’@random -

23] The com­pleted 3G in­stal­la­tion sure stands out, ready to sup­ply the higher cur­rent de­mands of Sanchez’s fu­ture re­stored 1966 Galaxie. Hopped-up FE first, brand-new Coy­ote later?

24] Al­ter­na­tors have come a long way from the 1960s. Ac­cord­ing to PA Per­for­mance test data, the best “60-amp” 1G makes only 15 amps at 900 en­gine rpm—ques­tion­able if all ac­ces­sories were run­ning at full blast with ag­ing wiring. The “130-amp” 3G is al­ready mak­ing 81 amps at the same rpm! No ex­cuse not to up­date to­day.

25] The 3G is also a smart up­grade for Ford’s first in­te­grally reg­u­lated 2G al­ter­na­tors, circa mid-1980s to mid-1990s. The 2G had de­cent out­put, but suf­fers from re­li­a­bil­ity is­sues and is prone to burn­ing up. Here’s one wiring method for re­plac­ing it with a 3G.



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