first post here

I just bought a 1979 Dodge B100 with a slant six in. I am in the process of putting the airpump and cat back on and have no idea where the hose off of the diverter valve is supposed to go. Anybody?

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This looks like a job for a factory service manual.

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Casually looking for a Clifford hyperpak intake for cheap.

I have been looking for one but all I can find is back to 1980.

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Seeking

A steal at $65 including shipping:

http://www.ebay.com/itm/1979-Dodge-Van- ... 00&vxp=mtr

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Casually looking for a Clifford hyperpak intake for cheap.

$5.92 @ biblio.com

http://www.biblio.com/details.php?dcx=473118116&aid=bkfndr

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"Hey, I like that paint job you got. What they call that--sorta a cross between Piss Yellow and Puke Green, ain't it?" -- Bob Falfa

Well damn I just ordered one for $40 off fleabay

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WOAH! I need to check out Biblio more often!

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Casually looking for a Clifford hyperpak intake for cheap.

Well I got the service manual and it has next to nothing about the air pump and its plumbing. Matter of fact it's the only thing on the whole van not covered.

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Seeking

Look at the very back in the emissions section. It is there.

You could also look at the sticker on the bottom of your hood.

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Casually looking for a Clifford hyperpak intake for cheap.

all that is shown is the diverter valve and nothing else both in the manual and under the hood

Could it be that there is no air injection into the engine and the only air line goes to the capped bung on the exhaust?

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Yes. It is possible that in 79 you only had air injection either directly into the catalytic converter or into the exhaust pipe. Go by what your service manual and sticker say.

Does your head have the port to the rear of the #6 exhaust manifold? If so, is it capped?

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Casually looking for a Clifford hyperpak intake for cheap.

It has the port but it is capped and looks like it has always been that way from looking at the paint and bolt head.

There is nothing about the air pump on the sticker or in the manual. In the emissions section it stops at the diverter valve and in the exhaust part it stops between the cat and the engine.

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Sorry the only Van book (that I know I have) is this one, and I do not see the info you are looking for in it. I am in the middle of scan'n it to a pdf file and about 10 other book also.



again a fsm is worth its weight in gold, but an aftermarket book is good also ... just not as good.

I also just checked Direct Hit and Mitchel for a 1979 Dodge B100 3.7L, Vin B, Eng Cfg L6, USA/Canada and actually came up with nothing ... wow!

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"Marilyn" 64 Dart GT & "Stella" 64 Valiant V100 Sedan - 63 Norton Project

OK. If I am remembering correctly, the diverter valve sits on top of the air pump and directs flow to one of two places. The places could have been the port on the back of the head, the bung in the exhaust pipe directly below the exhaust manifold flange, the catalytic converter directly below the exhaust manifold, or the catalytic converter farther back in the exhaust line.

I will go through my service manuals and see if I can come up with a diagram close to what you need...............

OK. The oldest manual I have is for an 83 van, so all of this info is coming rom the 1983 factory service manual.

It is possible that what you have is not a diverter or switching valve, but a relief valve. The relief valve bolts to the air pump and looks very similar to a diverter valve or switching valve but it only has an output to the bung in the exhaust pipe directly below the exhaust manifold flange.

According to the 1983 FSM: "The purpose of the relief valve is to control the pressure within the system, by diverting excessive pump output at higher engine speeds to the atmosphere through silencer material in the relief valve."

In 1983 the switching valve was only used on California emissions packages. There was also a combination switching/relief valve, presumably also used only on California emissions packages.

I can post pictures of my shop manual (sorry, my scanner is a PITA to use) if you would like to see them.

Can you post a picture of your air pump including the valve as well as the emissions sticker under your hood?

Even if your van was a California model, I doubt it would have a switching or diverter valve on the air pump in 79. I am fairly confident that what you have is a relief valve that has no external vacuum control on it.

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Casually looking for a Clifford hyperpak intake for cheap.

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Seeking