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  #1  
Old 08-19-2012, 04:38 PM
blue 58 blue 58 is offline
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Default Tube to nowhere?

I got under the car for the first time to check things out, and I discovered an open-ended tube with no apparent purpose. It starts at the rear of the intake manifold with an "L fitting, follows the transmission down along the trans. dipstick tube, and then it just stops, open ended, near the transmission pan. Is it supposed to be connected to something? If not, what is it? Here's a pretty good photo of what I am referring to (this is not my car, but you can clearly see the black metal tube exiting the rear of the manifold). Thank you in advance.

http://image.streetrodderweb.com/f/3...352_engine.jpg
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  #2  
Old 08-19-2012, 05:27 PM
Richard D. Hord Richard D. Hord is offline
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Hey Eric,
That would be draft tube, it is connected to the rear of the intake and as you move it removes any smoke that engine may produce! After car runs for a while (setting) you could possible see a little smoke coming out. Some newer cars would have a tube running to carburetor or intake to re-burn that annoying smoke. There was also a PVC valve inline!
Richard D. Hord
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Old 08-19-2012, 06:19 PM
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Thatīs one anoying tube. It spread oil all over the place under the car from it while driving also. Does anyone know ( partnumber ) what to buy and how to connect it back to the engine? Is it possible to connect it to the manifold?
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Old 08-19-2012, 07:09 PM
blue 58 blue 58 is offline
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Thanks so much. I was afraid it was a vacuume tube. I can deal with some smoke. Thanks again.

Eric
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Old 08-19-2012, 08:45 PM
Richard D. Hord Richard D. Hord is offline
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Quote:
Originally Posted by Anders View Post
Thatīs one anoying tube. It spread oil all over the place under the car from it while driving also. Does anyone know ( partnumber ) what to buy and how to connect it back to the engine? Is it possible to connect it to the manifold?
Hey Anders,
Here is what I've bought to put in between intake and Carburetor. Hope to get it installed soon and do a little plumbing and add PVC valve!
Richard D. Hord
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File Type: jpg mFVRtNoC9SjpNx_PU43U73Q.jpg (10.1 KB, 115 views)
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  #6  
Old 08-20-2012, 07:41 AM
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Thunder Downunder Thunder Downunder is offline
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Default Choke!

Hey guys, I think you will find that hose to the manifold is for the choke, near the transmission dip stick.
It takes air from the tube as the exhuast manifold gets hot, sends hot air to the auto choke, which will reduce as it gets hotter. When cold choke will rev bit higher as it gets hot air will reduce.

Cheers.
Frank.
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Old 08-20-2012, 07:49 AM
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Default Engin breather pipe!

Oh!!! I see now, yes thats the engine breather pipe, where the oil filler breather cap is, air passes through it which will allow fumes from the engine to pass via this pipe, the cooling fan at speed will push air through the oil filler cap into the engine and then pass through the engine breather pipe.

Cheers.
Frank.
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Old 08-20-2012, 04:51 PM
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Quote:
Originally Posted by Richard D. Hord View Post
Hey Anders,
Here is what I've bought to put in between intake and Carburetor. Hope to get it installed soon and do a little plumbing and add PVC valve!
Richard D. Hord
Dang! I want that! Can you help me with name & partnumber for that? Also, if you know the correct PVC valve ( partnumber a.s.o ) so I can buy the right parts, it would be swell
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  #9  
Old 08-20-2012, 07:07 PM
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There is an excellent Tech Article on this forum that descibes a PCV System upgrade from Road Draft-

http://www.squarebirds.org/pcv_conversion.htm
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Old 08-22-2012, 12:55 AM
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Thanks. Just what I need to learn.
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