Emissions piping and parts question

[Metatetron]

Hi yall,
I own a 87 cv 5.0 EFI. i also live in virginia so state inspections require emissions systems equipent to be installed as originally built.

Heres my problem & questions.

at the rear of the row of cylinders on the engine, a pipe runs to the paadenger side of tge engine and has bee cut and crimped about six inches from the manifold. Im told it is supposed to run to the catalytic converters with some sort of check valve in-line.
1) whats the pipw calked? Part number? And
2) this unknown cgeck valve. true or false? Part number?

Next one
the EGR valce has a hose attached ti tge rear facibg end pkugged. what attaches there?

Next
my smog pump has what appears to be two hose fittings/nipples abiut 5/16" where do i hook them to, both ends?

Every 302 i find at salvage has that damn pipe crimped off. anyone have a spare for sale?
Thanks y'all

john
john.jey9.reed@gmail.com

[gadget73]

It doesn't go to the cats. It comes out to a check valve with a hose nipple on it above the rear of the engine. Another pipe came up from the converters and ended nearby. There was a vacuum operated valve that switched air between these, and it was connected with rubber hoses. This is the Thermactor Air Diverter valve. Another valve was down near the smog pump and had an inlet from the smog pump and an outlet to the diverter valve. The one down below is the Thermactor air Bypass valve. Both of the metal pipes have a check valve that threads onto the end to transition between the rubber hose and the metal pipe.

Only two connections on the smog pump are used. the larger hose is output to the air valves. There are 2 above this, one on the side, one sticking straight up with a restrictor thing in it. The one on the side is plumbed into the cruise control system, the one on top vents to atmosphere. This isn't actually necessary to be hooked up, but if your state is stupid you'll have to do it.


The EGR valve should have a green hose that ends up at the bank of 3 control solenoids on the passenger side fender. it goes to the one above the other two, which is the EVR, EGR Vacuum Regultor. The two side by side are for the Thermactor Air Bypass and Thermactor Air Diverter. These use a white and a black hose, but I frankly do not remember which is which. I think its spelled out on the vac hose routing sticker under the hood though. There should be a red supply line from the tree on the back of the upper intake and this all goes through a plastic 4 hose connector thing that hangs in space. Usually the lines are all in terrible shape by now and you would probably do yourself a favor to can them all in favor of standard rubber hose. Color code them with electrical tape, zip ties, or heat shrink tube to ID them easier. Mine uses red and green zip ties.

[1987cp]

I can check what I've got squirreled away, if you aren't in a big hurry. Probably my most complete stuff is from a '81, but I imagine it would be comparable in function.

[gadget73]

The 81 pipe around the back of the head won't clear with the 86+ SEFI intake, or at least it will not be easy. The diverter valves and such also lived on the fender, so the plumbing is slightly different. Same function though.

[1987cp]

I'd forgotten about the valves on the fender. Pic from when the '81 was still stock:

[sly]

I'd forgotten about the valves on the fender. Pic from when the '81 was still stock:

that's a huge mess compared to the later setups.

[gadget73]

Its actually all of the same stuff, just in a different location. The early ones had some extra solenoids over there for unknown things though. The plumbing is certainly messier IMO.

[sly]

that double diverter though... dang

[oldschool84]

fuck that. i have true dual straight pipes and no cats.

[gadget73]

Thats fine if you don't live in emissions land like the OP does. I live in emissions country myself, but as long as it passes the sniffer I'm good.

[1987cp]

Fight! Fight!

[fmansfield444]

Yeah that's one thing I'm glad burnt up on my 85. I hated that nonsense, but like gadget said if you need it legally then you can't do a whole lot

[1987cp]

The insane thing is that if you take the US EPA website seriously, any street-driven car has to have every bit of emissions junk it came with, subject to a $2500 fine, apparently with no regard to how clean the car sniffs, and that any and all modifications HAVE to be CAFE approved for THAT SPECIFIC VEHICLE. Though in practice, it seems to be only your local sniffer operators (if you have any) who determine whether the equipment as-presented is good enough (and I've heard an entertaining story or two where OBD-II cars passed just because the computer told their scanner everything was fine even though the test guy insisted it "smells rich" - is not that, along with stories of new emissions schemes that burn more fuel to get lower emissions in PPM, proof enough that emissions testing isn't really about emissions?).

Good grief, have we digressed from the OP's question!

[Metatetron]

I highly appreciate the info and pix.

Information I have found so far, confirmed or unconfirmed.

The cut pipe I referred to is known as the catalytic Converter 'Secondary AIR Injection Tube" or
FORD A.I.R. PIPE (E5AZ-9B449-A)
http://www.oemfordpart.com/oem-part/...r=E5AZ-9B449-A

Sale Price: $51.05
List Price: $73.70
You Save: $22.65
Part Number : E5AZ-9B449-A

also see: http://www.amazon.com/Smog-Pump-E5AZ.../dp/B0068NSYUQ

Now, this pipe is cut right at where the threaded fitting that is NOT attached t the engine is.

I have on my smog pump: a large hose (5/8"?) that goes to a valve with a nipple on it. it is connected to yet another valve that is in place as well, but this one is blanked off with a large bolt & clamp on the rear-facing hose on it (I presumed it mated with aforementioned cut and crimped Tube.) I have small vacuum lines n place to these. I will try to get pictures up tomorrow of all this, and hrse up some sort of diagram of their attachments/routing as well.

My cats are blanked off at the cats themselves I see no evidence of any check valves on them, nor a place or way to route pipe between them, nor do I really understand where that tube would go to on the other end. Yet. Its starting to come together in my head though.

Crown vic net had this:

http://www.crownvic.net/ubbthreads/u...753#Post610753

I am thinking that I need to
Identify the cat piping and any valves or other parts inline with that piping and where it terminates [the Thermactor Diverter Valve(?)]
replace my 'Crossover' tube this requires pulling at least the upper manifold and so its probably going to be easier to fabricate and/or marry a pipe to its cut end, and route to its termination point. [the Thermactor Diverter Valve(?)]
continue to identify the two smaller nipples on the smog pump itself, as my cruise control works fine but these two nipples are open to air. (so Ill check my cruise control lines, Ive been eaing to do so anyway.

Thanks for your input thus far, Ill try to get clear pix tonight and post em tomorrow....

[Metatetron]

Pic I found on internets somewhere

I found this some where and cannot find the link now, or I would credit em