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by **E.Groscup** » Sat Jan 19, 2008 9:21 pm

Greetings all, I am having a problem smogging my 77 Vega Kammback. All of the pulse air system is missing. Could someone please post or email a pic. of this on a car? Anyone have one on an engine that was removed or is being parted? thanks, Erik

by **cjbiagi** » Sat Jan 19, 2008 9:27 pm

Erik, I sent you a scan from my GM parts manual.

by **marco_1978_spyder** » Sun Jan 20, 2008 11:08 am

I have 2 air pumps that came from 1980 231 V6 motors.

If this is what you need let me know.

(about the size of an alternator, pulley driven air pump)

by **spyder_xlch** » Sun Jan 20, 2008 12:02 pm

Not meaning to hi-jack here, does anyone know where I can find info on what emission devices came on what models/engines? I'm not talking about the under hood sticker.

by **norcalace** » Sun Jan 20, 2008 1:36 pm

I've got all he smog pieces from a '72 if anyone is needs them.

by **E.Groscup** » Sun Jan 20, 2008 2:13 pm

Marco, thanks for the offer, but the pulse air system on the 76/77 Vega 2300 didn't use a pump. It is a check valve(s)? that let a little fresh air into the exhaust whenever there was a negative pressure in that exhaust port. Spyder, my smog lady here has a book that would have the info you need. Do you have a specific car that you need info for? I can probably get copys of individual pages if need be, otherwise I can get the isbn# of the book and there must be other copys out there. I am attaching the page out of my shop manual that sort of shows what I am looking for. Erik

by **rpoz-29** » Sun Jan 20, 2008 4:12 pm

I looked on ebay...a guy had a complete 77 engine/trans for sale last week, but it must have sold.

by **djv8ga** » Sun Jan 20, 2008 4:22 pm

Check valve?...do you mean E.G.R valve?

by **spyder_xlch** » Sun Jan 20, 2008 4:30 pm

I was kind of just wanting to know what came with or without AIR pumps, what if any came without EGR or cats, etc. I know my 79 Spyder with 305 came without an AIR pump. Most vehicles sold after 75 had cats. I'm sure all H-bodies did. I'd love to find an underhood sticker that says non-catylist.

by **vegatex** » Sun Jan 20, 2008 11:11 pm

Erik, I know what it looks like, but I'm not sure where I can get you a picture. It had a block with four venturi tubes that look like horns coming off the manifold. No air pump-- the venturi created the pressure for the pulse air.

by **cos2482** » Mon Jan 21, 2008 5:58 pm

Erik,

Is this what you are looking for?

Jim

by **spyder_xlch** » Mon Jan 21, 2008 6:02 pm

I had a Chevette with the same system as that. Might be another source for those parts.

by **marco_1978_spyder** » Mon Jan 21, 2008 7:55 pm

Not that this will help anybody but,

they put that thing on the 1980 2.5 Iron Dukes too.

The box was a little thicker as I recall, but otherwise the same.

by **spyder_xlch** » Mon Jan 21, 2008 8:18 pm

Might be easier for Erik to find in the junkyard. I wonder what other models came with them?

by **cos2482** » Tue Jan 22, 2008 12:20 am

Pictures of yet another,

You guys are right. I remember also seeing something like these installed on the Chevettes and the iron dukes in the later 70's . Can't be the same part number with the same length tubes, could they?

Jim

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