1982 Chevy C10 4.1-liter engine emissions recirculation

[Brownie82C10]

What's the name of the crooked (Z-shaped?) hose that helps with the recirculation of engine gases in a 1982 Chevy C10? I couldn't find a replacement hose I needed at one point a few years ago (the old one had shrunk, cracked and become hard and nonflexible), so I clamped a filter on the end of a new stubby hose. A photo of the filter is attached. A guy behind the counter at an auto parts store told me about this workaround. I'd like to find the correct hose and put things back the way they're supposed to be. I wonder now where the other end of the hose should go. Thank you.

 

[Turbo4whl]

Crankcase breather hose? Goes from the valve cover to the air cleaner. Would hook to a breather mounted in the air cleaner.

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The air cleaner breather element is still available. As far as the correct hose you'll need something else. You might ask the parts house guy if you can go back and look at the molded heater hoses. Cut a piece out of a hose with the correct bend(s).

 

[fast 99]

Only problem is coolant hoses are generally not oil proof and will swell.

 

[Ricko1966]

At the valve cover does that 90 degree fitting swivel or is it fixed.If it swivels I'd just buy emissions hose aim the valve cover nipple forward,route my hose in a C shape.Put a hardware store spring inside the hose to prevent collapse.

 

[Brownie82C10]

Getting back to this matter, I thought I'd post a picture of the workaround for the emissions hose I still can't find — and still would like to have. The hose and filter (a Spectre 3991) are outlined in red. As I recall, the original hose had two bends and went back up under the air filter tray somewhere. I should've kept the old hose for reference.

 

[Brownie82C10]

Happy Fourth of July! I have a better photo for reference. I'm looking for the formed emissions hose that goes from Point A on the C10 6-cylinder engine to point B underneath the air filter tray. The specific name of the hose would be good to know. A source for it would be even better. Thank you!

 

[pinballlarry1]

Sorry I did not reply earlier, I also have 6 cylinder 250 ('81) like yours. When I renovated the head last year, I was able to simplify the engine exterior greatly and am very happy with the results.

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Here is the fresh air supply hose that came off of mine:

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The GM 9985393 is the spec number for fuel, oil and emission rated vent hose, it seems to cross to a part number 9438842 for 3/4" 10 foot bulk hose, but I could not find anyone that stocks it. That hose supplies filtered air to the two plenum boxes welded on top of the valve cover. I searched for a suitable replacement valve cover, but ours uses a unique bolt pattern so nothing else fits. I decided just to leave the valve cover alone and here we are now:

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Contact me directly Joe, I will never use this one again, you are welcome to it, I can ship it in a small flat rate box.

 

[Brownie82C10]

pinballlarry1, thank you for the detailed reply and part ID — and nice job on your truck! Mine is a daily driver. I'll contact you directly.