Do you have OEM CA emissions / smog equipment still in place?
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Just curious who has CA emissions equipment still on their motor. I'm trying to reconstruct the missing system on my current Blazer build. My other blazer has its original equipment still intact.
Let's see some photos documenting the CA emissions systems. |
Re: Do you have OEM CA emissions / smog equipment still in place?
My truck has the Federal emissions package, so I can't take pictures to help you. However, if you need to see what was used, the Chassis Service Manual has pictures and schematic diagrams of the systems used, to help you. Someone here was gracious enough to scan in the entire manuals for a number of years; you should be able to find what you may need from those manuals.
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Re: Do you have OEM CA emissions / smog equipment still in place?
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Slowly coming together on the blue blazer.
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Re: Do you have OEM CA emissions / smog equipment still in place?
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I can take more if you need them. I guess I should have called and let you look at it early that morning when I came back through Albuquerque.
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BTW, mine has what sounds like an exhaust leak. I had new exhaust installed, but the noise is still there. Do you have any ideas.
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It looks like the vacuum line from the (california/emissions) carb has been plugged (in your 1st pic) and I believe this normally runs to the emissions unit. Coley |
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Re: Do you have OEM CA emissions / smog equipment still in place?
I've read the pump can seize over time and makes a racket but wouldn't suspect that would sound like an exhaust leak. If the diverter valve diaphragm fails it can produce a vacuum leak (read it can be cured by placing a BB in the signal hose to the valve) and continuously dump air into the exhaust manifolds that can cause back firing.
I found a guy who rebuilds divertor valves for the corvette crowd. Rock auto recently had a close out on some USA made reproduction diverter valves for like $10. These are plastic and the hose tubes oriented differently but I may use one until I can have the original unit rebuilt. Next time Larry! Thanks for the pics! |
Re: Do you have OEM CA emissions / smog equipment still in place?
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Here's an AIR schematic for a small block - generic and not specific for a pickup though.
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Re: Do you have OEM CA emissions / smog equipment still in place?
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I've been able to scrounge some NOS pieces to rebuild the system in my Blazer.
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....even a pump.
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The emissions decal for CA emissions half tons in 72 made use of this LM decal (not reproduced to my knowledge).
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Re: Do you have OEM CA emissions / smog equipment still in place?
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Example pic of AIR brackets and AC brackets for SBC 1972
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Re: Do you have OEM CA emissions / smog equipment still in place?
I have a complete AIR System on my 68 if you need any more info/pictures. As I recall, at least in 68 only the standard transmission - half tons had AIR systems. There were probably different rules in later years.
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Re: Do you have OEM CA emissions / smog equipment still in place?
Guess I am lucky. My 3/4 ton 1970 had no emission controls, outside of the spark and fuel calibrations. Good luck getting it all together, so many people removed all that stuff years ago.
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No 3/4t trucks had AIR - I believe these were emissions exempt. |
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Looking good Pete!
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He traded it in on a new 69, 350 engine, 350 automatic, and it did not have an emissions system. |
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3/4 ton trucks and heavier seem to have had fewer smog control requirements in 68. |
Re: Do you have OEM CA emissions / smog equipment still in place?
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Re: Do you have OEM CA emissions / smog equipment still in place?
My truck was a California truck for most of its life and came with all the emissions stuff (pump, brackets, hoses, connections, pipes, etc) when I got it.
That stuff was all removed and off within a couple of hours once I got the truck back to B.C.....and now all in a box under the bench in the shop...probably never to see the light of day again, lol. Coley |
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