Tinware writing, Was this on all cars…?? Options

[Clubsport32]

Hi All

Have seen this on an unrestored car…does anybody have anymore details…? I assume the 022 refers to the 1.7L but what about the other number?

Any insight would be appreciated…thanks

Andy

[wonkipop]

a bit more information re EC engines in USA cars.

the 74 412 ran L jet alongside the 1.8 914.
i found an image of an original EC in a 412 Variant.
its a very different setup to the 914.

1. the 412s ran EGR in 74! (IMG:style_emoticons/default/blink.gif)
2. far as i can tell (not 100% on this) from image the EGR was connected to a TB port on forward facing side of throttle body (using orientation of the TB in a 914 - to rear of car in 412). the vacuum line from the EGR connected to the cast bump directly below the idle screw (see images above of 914 throttle body). the bump below was left undrilled and not used as it was in some 914s for idle retard. they drilled out the upper bump and fitted a coupling. the vacuum line to this port also tee-ed off near the TB and ran to a second port in the intake manifold plenum.
3. the distributor was not a dual vac chamber advance/retard but had only a single vacuum advance chamber. the vacuum advance hose connected to the TB port on the rearward side of throttle body ( using orientation of TB in 914). as per some 74 914 the port is being used at cruise to advance for fuel economy.
4. the tune up sticker had a dist diagram with only one hose drawn and it was shown connected for idle setup.

i could not see an emissions sticker in the image i found. this engine would have had a version of the 914 classifications? ie either plain EC or EC-letter identifier. all 74 412s were fitted with the EC engine. very hard to find further information on the 412.

it is interesting how different it is. that it is running EGR before the 914 does. and it has a different set up for the EGR. i am not entirely sure how it works on the 412 but i think it might be recirculating exhaust gas at idle but also it is able to do it at cruise. i believe the 75 914 would have recirculated EG at cruise.

a 412 only ran an auto box in the usa so set up was probably tailored to engine characteristics for the gearbox?