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> Anyone have a picture of a smog pump installed on a 1.8?
DaveB
post Jan 28 2022, 01:55 PM
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Need help again. I found out my car was originally from California. Any indication of smog equipment is gone. So how is the smog pump mounted to front of the engine? I've seen the parts and would like to see an engine with this installed.

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DaveB
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wonkipop
post Jan 28 2022, 09:47 PM
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neat set of docs @914Mels


@DaveB

attached docs @JeffBowlsby pointed us 74-1.8 owners at last year when he alerted us there was a 49 states and a cal version of the 1.8 in 74, despite other accounts saying it was a 50 state engine.

bit more difference in 75. these docs outline it.

Attached Image Attached Image Attached Image

jeff has the whole document (75 training manual) on his website if you want to look it right through.

interesting idea putting the emissions equipment back on.

as far as i can tell the equipment on a 1.8 had no negative impact on horsepower.
the 1.8s suffered from reduced horsepower due to low compression for unleaded fuel, but the emissions equipment itself produced no losses. at least at that point in time.
the L jet electronic fuel injection helped these little motors cope.
possibly some impacts on driveability and throttle response.
and like all 1.8s 74 and 75 running hot at idle due to ignition retard from vac chamber on distributor to lower NOx (remembering the 2 way cat does nothing for NOx so they were doing it by running lean and retarded at idle/or cruise).


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it looks from the info that jeff had that it was only the 75 49 state 2.0 that had a smog pump.
and CAL 75 2.0 had EGR and CAT but no smog pump.



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thinking a bit more about your cat location question.
the 914 has a short exhaust system.
don't think the cat was bothered by trouble heating up or having a correctly hot exhaust system like conventional cars with much longer exhausts where it makes sense to get them up nearer to the engine.
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DaveB   Anyone have a picture of a smog pump installed on a 1.8?   Jan 28 2022, 01:55 PM
Van B   Is it a 75 model then?   Jan 28 2022, 02:27 PM
JeffBowlsby   1.8s even for the CA-market never had air injectio...   Jan 28 2022, 02:37 PM
DaveB   1.8s even for the CA-market never had air injecti...   Jan 28 2022, 03:02 PM
Steve   Check out the originality forum. http://www.914wor...   Jan 28 2022, 02:40 PM
Dave_Darling   Yes, the pics in that thread are from a 2.0 liter....   Jan 28 2022, 02:55 PM
JeffBowlsby   @Dave_Darling Thanks Dave, great to hear from yo...   Jan 28 2022, 03:02 PM
DaveB   I have a different question on the smog system. Wh...   Jan 28 2022, 03:53 PM
wonkipop   I have a different question on the smog system. W...   Jan 28 2022, 06:33 PM
Dave_Darling   The factory called the heavy steel exhaust stubs (...   Jan 29 2022, 03:05 PM
wonkipop   The factory called the heavy steel exhaust stubs ...   Jan 29 2022, 03:12 PM
Van B   Geez this question brought out some serious expert...   Jan 28 2022, 03:15 PM
wonkipop   there was an intact cal 1.8 that sold through soth...   Jan 28 2022, 06:44 PM
wonkipop   @DaveB out of interest dave, is there still a pa...   Jan 28 2022, 06:51 PM
914Mels   Need help again. I found out my car was originall...   Jan 28 2022, 08:09 PM
wonkipop   neat set of docs @914Mels [b]@[url=http://www...   Jan 28 2022, 09:47 PM
DaveB   @wonkipop I did find what looks like a stencil ...   Jan 29 2022, 02:39 AM
Van B   Looks like a 604 same as mine. Which is also why t...   Jan 29 2022, 09:04 AM
DaveB   Looks like a 604 same as mine. Which is also why ...   Jan 30 2022, 12:55 AM
wonkipop   @[url=http://www.914world.com/bbs2/index.php?showu...   Jan 29 2022, 03:03 PM
DaveB   @wonkipop I'll take picture of any stickers ...   Jan 30 2022, 01:48 AM
wonkipop   @914Mels those docs you posted are great. test p...   Jan 29 2022, 05:06 PM
wonkipop   relax dave. all cars in the USA had to move towar...   Jan 30 2022, 02:52 AM


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