70s air pumps

["Watry, Andrew (LNG-MBC)" <Andrew.Watry@domain.elided>]

Are the air pumps installed on late-70s 115 and 116 cars the same, other
than the pulley and bracketing? That is, can you fit the pump off an Alfetta
onto a Spider if you change those items and keep the original air manifold,
header, etc?

A more general question:  Air pumps were used what years? 1977-1981?  I
believe 75 and 76 115 and 116 cars didn't have them yet, and were quite
detuned to meet smog regs, but introduction of the air pump and catalytic in
1977 did most of the cleaning work and allowed more aggressive cam timing,
the two-point distributor, etc.  And they must have disappeared with
introduction of Bosch injection in 1982, right?

What, if any, is the consequence of running one of these with the air pump
disconnected (other than dirtying the air), assuming you've already passed
your smog test?  Do you risk ruining the catalytic?

Thanks

Andrew Watry
Berkeley, CA

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