Early versus late 1974 Options

[Lockwodo]

Would anyone happen to know what the breakpoint in VIN #s is for "early" 1974 versus "late" 1974 914s?

[wonkipop]

@lockwodo ,

the 2.0L guys will have to answer the question you have about retard being hooked up.
........but if 2.0s are anything like 1.8s the retard port is for emissions at idle.
doesn't mean to say they are the same, as 2.0s are D jet.

theoretically it should run better at idle without the retard hooked up.
i think.


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@JeffBowlsby .
i downloaded all the CARB documents when i was in the archive getting the 1.8 stuff.

maybe this is of interest to you.
i went back and had a look at them in my files after @lockwodo posted his questions.

Oct 72 CARB documents (covering 1.7s and 2.0s) for 73 model year.
both have vacuum advance and retard activated for distributor/throttle body.








Oct 73 CARB documents (covering 2.0s) for 74 model year.
now only has retard activated for dist/tb.







i'll leave 2.0 experts to work this out.
1.8 stuff gave me enough of a headache.

........it seems to say.
at minimum what is called a late 74 2.0 (hose layout only vac retard) was a california car? just like the 1.8s.

or.
74 2.0 L was a universal car (50 states) and had only retard.

or 74 did change at some stage during model year to conform to CARB.
and was a 50 states car when it did that change as well. ie they just applied CARB requirements across the board.

?????????