Anyone have a picture of a smog pump installed on a 1.8? Options

[DaveB]

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.

Thanks,

DaveB

[JeffBowlsby]

@Dave_Darling

Thanks Dave, great to hear from you, hope all is well.

My chart is based on some factory literature which organized it that way. The cat req. for 1975 1.8s is the last line of the chart.

PS, I may have misundertood your full comment. The factory called the heavy steel exhaust stubs (F-pipes) mounted to the heads on the 75-76 exhaust 'reactors' beacsue the heat they store helps burn off unburnt fuel as an emiision thing. Perhaps you wwere aware of that.

[Dave_Darling]

The factory called the heavy steel exhaust stubs (F-pipes) mounted to the heads on the 75-76 exhaust 'reactors' beacsue the heat they store helps burn off unburnt fuel as an emiision thing. Perhaps you wwere aware of that.

I was not aware of that! I thought that thermal reactors were the extra complicated exhaust headers that came on the ~75-77 911s, and assumed that any on the 914 would have been similarly complicated!!

Thanks for the education, Jeff!

--DD

[wonkipop]

The factory called the heavy steel exhaust stubs (F-pipes) mounted to the heads on the 75-76 exhaust 'reactors' beacsue the heat they store helps burn off unburnt fuel as an emiision thing. Perhaps you wwere aware of that.

I was not aware of that! I thought that thermal reactors were the extra complicated exhaust headers that came on the ~75-77 911s, and assumed that any on the 914 would have been similarly complicated!!

Thanks for the education, Jeff!

--DD

jeff is right. those exhaust stubs were intended to better exploit the retarded timing that all 1.8s (74 and 75 all states) were set to at idle. they all did lower combustion temp - less NOx but the exhaust and to some extent head temps increased. late combustion.
the unburnt hydrocarbons were intended to burn in the first section of the exhaust.
those stub pipes assisted with that in 75. Van B helped me get my head around that.

pretty dumb primordial thermal reactors but "reactors" none the less.