1976 Is it a 49 state or Cali car? Options

[gnomefabtech]

Car came from Nevada but I can't tell if it was originally a California car. It still has injection but doesn't have a cat or smog pump. Doesn't look like it ever had either but I'm wondering since I'm going to try and register it here in California. Thanks in advance!!

Here is the Vin:

[technicalninja]

Wow!
Wonki is Sherlock Holmes...

I can give a couple of tips on emission control: The EGR system was developed solely for the reduction of NOX via introducing an inert gas (without oxygen-could have been anything) into the intake to dampen the temperatures achieved. A small amount of exhaust gas equaled a large combustion chamber temperature decrease. If you keep the combustion chamber below 2500F oxides of nitrogen are significantly reduced.

The air pump was utilized to add additional oxygen to the cat to allow the cat to burn the HC and CO out of an extremely rich mixture. (by today's standards). Without the supplementary oxygen the cat will stop functioning earlier.
Air pump keeps cat alive; it doesn't dilute the exhaust.

Damned interesting that cat cars got an automatic replacement at 30K.
Replacing a cat every 30k would get old quickly...

What I didn't know was why Nissan added EGR valves to the Z-car in 76 and then added nothing else (49 states cars) until 1979 when everyone went to cats across the board. The 75 Z FI manifold without EGR is a rarity.
Thanks Woki!

I've found getting into tangles with city and state officials is often more trouble than it is worth.

Good luck to you if you try. (IMG:style_emoticons/default/beerchug.gif)

[Chris914n6]

The air pump was utilized to add additional oxygen to the cat to allow the cat to burn the HC and CO out of an extremely rich mixture. (by today's standards). Without the supplementary oxygen the cat will stop functioning earlier.
Air pump keeps cat alive; it doesn't dilute the exhaust.

Not exactly. The air pump was added to trucks before cats were mandated. 1973 Chevy C10 for example. It was to finish burning the gas since carbs tended to run a bit rich.
Interesting side note. An air pump and EGR was used in the 2001 Chevy S10, but not used in the 2004 Blazer.

What I didn't know was why Nissan added EGR valves to the Z-car in 76 and then added nothing else (49 states cars) until 1979 when everyone went to cats across the board. The 75 Z FI manifold without EGR is a rarity.
Thanks Woki!

EGR isn't a mandate, it's a way to reduce emissions to pass regulations that year. For example the 2001 and 2002 Nissan Maxima didn't have EGR, but the <2000 and >2003 did. The new engine (VQ35de) introduced for those years was clean enough with just ECU tuning and design. On the other hand a 2005 VW Beetle has air injection but only runs from startup to warmed up.

[Dave_Darling]

The air pump was added to trucks before cats were mandated.

I dated a gal who had a 68 912. Every other year, it was a huge pain to try to get it smogged because it was supposed to have a smog pump. She couldn't find one, but the official sources that CARB used said they had one in stock. (I think she found out who was supposed to have it, and they listed it in inventory but you couldn't actually order it.)

Eventually she had the car converted to a 912-6, and apparently didn't have to worry about it after that due to having different requirements.

--DD

[wonkipop]

The air pump was added to trucks before cats were mandated.

I dated a gal who had a 68 912. Every other year, it was a huge pain to try to get it smogged because it was supposed to have a smog pump. She couldn't find one, but the official sources that CARB used said they had one in stock. (I think she found out who was supposed to have it, and they listed it in inventory but you couldn't actually order it.)

Eventually she had the car converted to a 912-6, and apparently didn't have to worry about it after that due to having different requirements.

--DD

68 912 is pre smog mate!
or pre serious smog. most it would have had would have been closed crankcase vent system. its even pre vapor emissions in 69.

you must mean a 76 912 E?
loaded with the same gear as 76 914 more or less.
(IMG:style_emoticons/default/beerchug.gif)
its probably pretty farked trying to own one of those in california just like the 914.
theoretically i suppose you can find a cat for a 76?
but i bet you can't find those thermal reactor log exhaust manifolds that were on a 912E instead of a cat! ? with a bit of luck the smog inspector probably wouldn't have a clue what to look for since that bit of tech died out pretty quick. i hear the reactors used to cook the engines in BMWs. Merc liked using them too. i remember my old USA girlfriend's grandmother had a 70s merc with a reactor manifold. first time i looked in that engine bay to check the oil for her i spotted it. thought to myself what the hell is that thing.

[Dave_Darling]

68 912 is pre smog mate!

Nope, not at the time. She had to have her car tested every other year, like most of us.

Short wheelbase long-hood 912, not a 912E.

--DD