Compiled by Tim Palmer, Green Country Corvair Group
Having recently come across some NOS rebuilt generators and needing one for my brother's Greenbriar project. I set out to understand what GM was doing with the generators. The following table was generated from parts books, assembly manuals and my barn of parts out back. This is not the last word on generator numbers as you see, there are gaps in table. Also GM did not always update the assembly manuals or parts books as well as they should have.
To aid in identification the armature's part number is stamped on it. Also all true Corvair armatures us a left hand nut to hold on the fan. This is not true for the alternators.
The 1951434 end frame is drilled for both generators but has only one mounting pin. Part numbers or casting numbers do not seem to be on the end frames. I have not finished my research on pulleys but one thing has come out. Early HI performance and Turbos used a different pulley then the standard Corvair. I'm not sure why.
The exploded picture of a generator is one you won't see in the regular GM Corvair parts book. It comes from the illustration book. You might want to copy it and put in your parts book.
|Generator Tag||Correct for:||Amps||Description||Regulator^|
|1100357||60 all.||30||Terminals point up.|
Not as long as others.
|1102226||61-63 all except trucks and wagons.||30||Terminals point up.||1119001|
|1102227||61-63 trucks and wagons only.||30||Terminals point to rear of car.||1119001|
|1102247 (16-U)||60-64 all. Replacement part.||35||Terminals point to rear of car.|
|1102336||64 all.||35||Terminals point to rear of car.||1119305|
|1105135||60-64 optional for all.||35||Multiple part fan and pulley.|
Optional low speed cut-in.
^ Regulator 1119261 was used as a general replacement part for 60-63, except with generator 1102336, 1105135.
^ Regulator 1119635 was used as a general replacement part for generator 1105135.
|GENERATOR TAG #||ARMATURE||FIELDS||PULLEY END FRAME||COMMUTATOR END FRAME|
|1105135||1950521||1950516 RH, 1950517 LH||1950519||1950510|
|YEAR||Standard Engine||High Performance or Turbo||Optional Low Cut in Generator (1105135)|
|60 to early 61||6255811||1922950-fan, 1931102-pulley w/guard|
|61||3789839||3798280||1922950-fan, 1877887-spacer, 1949357-pulley|
|62||3789839||3798280||1922950-fan, 1877887-spacer, 1949357-pulley|
|63||3789839||3798280||1922950-fan, 1877887-spacer, 1949357-pulley|
|64||3848042||3848042||1922950-fan, 1877887-spacer, 1949357-pulley|
|6255811||2-9/32“||3/8”||Used on 60. Except with generator 1105135.|
|3789839||2-9/32“||3/8”||Used on 61-63 without high performance or turbo. Except with generator 1105135.|
|3798280||2-7/8“||3/8”||Has guard. Used on 61-63 with high performance or turbo. Except with generator 1105135.|
|3848042||2-7/8“||3/8”||Has large guard. Generator can not be mounted with the pulley on. Used on all 64. Except with generator 1105135.|