CJ2A AC Fuel Pump comparisons
3 were removed from CJ2A engines dating from Feb. '46 thru Dec. '47. The 4th is an NOS unit purchased a number of years ago under the impression that it was for CJ2A, but it's not.
3 are genuine AC, the 4th. is not AC identifiable, but appears similar enough to the AC units that it's either AC, or an AC clone (repro). The genuine AC are date clocked, the other is not.
Of the 4, only one might actually be original to a CJ2A, but it's missing the bowl, so original bowl type is unknown.
From left to right:
- 1945 dated: removed from a Dec. '47 CJ2A
- 1948 dated: NOS AC Type 461 (AC boxed)
- 1954 dated.: removed from '47 engine #108221 - CaPaC rebuilt
- Undated: removed from Feb. '46 CJ2A - newer mfg. rebuilt or repro
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'45 date - believed original
Casting number: AC RPD R1528089 lower body casting distinctly different than the others |
'48 dated - NOS AC 461
Flange stamp: 3306 for reference vs the others, re. finish colors. WON'T work on a CJ2A. |
'54 dated - rebuilt
Data Tag: Rebuilt - CaPaC 7766R |
not dated - rebuilt and/or repro
Data tag: circled "E" - 572 288I |
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Bottom casting different w/numbers
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No casting numbers
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No casting numbers
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No casting numbers
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Back side of casting same as front
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Back side of casting same as front
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Back side of casting has unused boss for primer lever
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Back side of casting has unused boss for primer lever
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no photo available
couldn't get the bowl off, it's stuck fast! |
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Inlet feed boss is flat topped
Vertical feed passage rectangular |
Inlet feed boss is flat topped
Vertical feed passage rectangular |
Inlet feed boss is flat topped
Vertical feed passage rectangular |
Inlet feed boss is circular
Vertical feed passage oval |
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Rectangular boss and reinforcing ribs between flange & body
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No boss or reinforcing ribs between flange & body
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No boss or reinforcing ribs between flange & body
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No boss or reinforcing ribs between flange & body
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Remnants of yellow chromate on lower casting.
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Lower casting irridescent yellow chromate. Upper casting irridescent clear chromate.
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Remnants of yellow chromate on lower casting.
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No chromate on lower body. Appears plain pot metal.
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no photo, bowl missing!
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Bowl type unknown
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"AC" cast in glass
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"AC RPD" cast in glass
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No markings
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Bail uses a 10-point star-wheel
Pressure cup missing, but was not permanently attached |
Bail uses a 10-point star-wheel
Pressure cup is permanently attached w/peened thread end. |
Bail uses an 8-point star-wheel
Pressure cup is permanently attached w/capped thread end. |
Bail uses a 6-point star-wheel
Pressure cup not permanently attached. |