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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Big Block 460 Emissions Removal

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Old Apr 21, 2013 | 08:05 PM
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Big Block 460 Emissions Removal

I have a bone stock 1985 F250 with a 460, c6, and Dana 60. I'm going to remove all emissions taking this 460 down to bare bones, however I do plan on keeping the PCV, and EGR systems. Try to stay with me. I'm not good on computers and even though I was a Ford mechanic from the late Nineties into the early two thousands, I'm not to familiar with these older ones. I'll do my best. This is going to be the start of a frame off resto. I'm taking this summer to make sure the drivetrain is bulletproof before its pulled because it will not be rebuilt. Just cleaned up when it's out.
So here we go..........



I decided to start with this canister.
It's mounted to the passenger side fender well with Three studs running through to the underside of the well.



I used a 7/16 socket to remove these bolts. In the pick I left the nuts loose on the studs so you can see which ones they are.
For those of you that are trying to sacrifice these parts like I am, be carefull to not snap these studs as time has taken a toll on the hardware. You can see I snapped one. Guess I should have worked the nut back and forth a little more.
Anyway........ Moving on........


The air pumps were next.



After taking the belt off by removing the 9/16 adjustment bolt on the left lower side of the left air pump, there is one more longer 9/16 bolt in the rear of the same pump to remove. I then removed the hose that runs between this pump and the canister that I unbolted from the passenger inner fender well. To loosen the hose clamps, I used a 5/16 socket.



I could now remove the pump completely.

For the removal of the right side pump, you have to remove the pulley by removing the Three 10mm bolts. Then it's straight forward just like the last one.



I chose to leave this assemble mounted to the pump during removal. I traced the hoses back to what they were connected to, loosened the hose clamps, and disconnected the hoses there. This pump was now ready to be completely removed from the truck.





This is what's left after the pumps are removed. That's one heck of a bracket!
This mount also serves as an Alternator mount. I'm going to remove this mount and take the plasma to it cutting most of the material off except for what's going to serve as spacers for the alt just so I know that it will align perfectly with the other pullies. Here it is removed.....



Ones again I left the mounting bolts in so we can see the location.



You can see with the Two bolts in the top ears of the mounting bracket that the top right threads into the top of the water pump on the opposite side of the crossover hose.
The left one threads directly into the passenger side head in the top left corner of my pic.
And the long bolt in the middle threads through the Alt, and through the water pump into the block to hold it in place on the block. I used a 9/16 socket to remove the bracket hardware and 11mm to remove the electrical from the back of the Alt.

The next thing I did was move onto the plumbing that transports the air into the exhaust manifolds. Keep in mind, knowing that I was going to be doing this job, a couple weeks ago, literally every day, driving it or not, I'd spray the bolts down with PB Blaster. EVERY DAY! As much as I wanted to salvage these I was unable to do so. It was impossible to get a good enough grip on these with the open end of a wrench without rounding them. So I cut right above the nut, bent the tube above my cut out of the way enough to get the box end on them. Surprisingly I got no hard time out of these. They broke free fairly easily. After that, I removed the rubber air hose from what looks like an equalizer, or collector and removed them completely from the vehicle. I used the same process on both sides of the engine.




It looks like we're dealing with 5/8 inverted flares here. I'll find out the thread pitch and get some plugs ordered up. I know I won't be able to find these in the local parts store. I'll check tomorrow on the plugs and hopefully get my Alt bracket cut.
This is all I got done for the day. Weather prohibiting ill be back at it tomorrow.
I'll probably have some questions for you guys being that I've never done this before. There is a lot of crap under there!!!
Comments are welcome, and I'd love to hear suggestions.
Until tomorrow then.
 
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Old Apr 21, 2013 | 08:21 PM
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Am I posting these picture correctly? I started a photobucket account, I go to the pictures in the library, copy the URL from the top search bar, then paste on this forum correct?
 
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Old Apr 21, 2013 | 08:25 PM
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You should keep your evap system in place, otherwise you could have gas fumes venting in the engine compartment. If it is intact, it's a tidy way to prevent evaporation and fuel contamination compared to an open vent.
 
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Old Apr 21, 2013 | 08:34 PM
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Originally Posted by 85e150six4mtod
You should keep your evap system in place, otherwise you could have gas fumes venting in the engine compartment. If it is intact, it's a tidy way to prevent evaporation and fuel contamination compared to an open vent.
It's funny you mentioned that. I was looking at that after I finished up today. I shure would like to get rid of it, however I was thinking along the same lines as your suggestion. Not sure about that just yet. Sure would look good with it all gone, and a little gasoline smell never bothered me any. Brings back memories from the old muscle cars actually.
 
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Old Apr 21, 2013 | 08:45 PM
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Originally Posted by Inside Man
Am I posting these picture correctly? I started a photobucket account, I go to the pictures in the library, copy the URL from the top search bar, then paste on this forum correct?
The way to get the pictures to show up in the forum is when you're on the picture you want to insert (on the forum) in photobucket, copy the "Direct Link" that's found to the right of the page on image links, and then, when you're back on the FTE forums, hit the "Insert Image" button, and paste what you copied earlier. Atleast that's the way I do it.
 
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Old Apr 21, 2013 | 08:53 PM
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Why are you keeping the EGR? That's the one thing I would get rid of after I got a new carb. The EGR is prone to failure, burns out the gaskets and eats away at the carb spacer.
 
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Old Apr 21, 2013 | 09:05 PM
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Originally Posted by Franklin2
Why are you keeping the EGR? That's the one thing I would get rid of after I got a new carb. The EGR is prone to failure, burns out the gaskets and eats away at the carb spacer.
I'm keeping everything stock on this motor until it needs a rebuild down the road. Even after the resto. Though I have been thinking about bolt on's like carb, intake, MAYBE a mild cam, and heads. Not sure yet. Being that the drivetrain doesn't have that many miles on it, and runs flawlessly, I'd like to focus all money on everything else.
 
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Old Apr 21, 2013 | 11:09 PM
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Gas fumes and a spark = not such good memories.

Unlikely you'd have that happen, but it would be nice to make sure it doesn't.
 
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Old Apr 22, 2013 | 05:18 AM
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I'll take that into consideration.
 
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Old Apr 22, 2013 | 02:36 PM
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Yea, if it's damaged or otherwise fubar'd, just rig up your vents to be at the back of the vehicle. Rollover protection would be fairly easy to adapt, if you are in the habit of rolling your vehicles regularly.
 
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Old Apr 22, 2013 | 03:42 PM
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Originally Posted by 85e150six4mtod
Yea, if it's damaged or otherwise fubar'd, just rig up your vents to be at the back of the vehicle. Rollover protection would be fairly easy to adapt, if you are in the habit of rolling your vehicles regularly.
How would you go about venting it out the back of the truck? I'm fine with letting it vent into the engine compartment. I'll use the old muscle cars as an example again. Do you guys have any photos for an example of a CLEAN way to vent? I didn't consider this to be a big deal until you guys mentioned it. Now you have my gears turning. Oh, let's hope this thing can keep all Four rubbers on the road.
 
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Old Apr 22, 2013 | 03:52 PM
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So it looks like I'm not gonna be working on the truck today. My sons sick so........ Looked around last night for some Double Inverted Flare Plugs for the Exhaust Manifolds. No luck, but I was talking to a guy from Fastenal. Said he should have something to plug those holes up the right way. So it could be a couple of days for those. I also didn't cut the Air/Alt bracket yet. Hopefully tomorrow, but today my son owns daddy
 
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Old Apr 22, 2013 | 08:06 PM
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If you simply remove the vent lines at the tanks, then they will vent under the truck. On the exhaust air tubes, if you can get the fittings out of the manifolds, they are a tapered pipe thread. There is also a pipe across the rear of the heads that the air system feeds into. If you simply remove the air check valve from it and either cap or plug the tube you will be OK on that one.

EGR, mine had a BB installed in the vacuum line from shortly after I bought it. Leave the thermal valve in the spark advance though.
 
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Old Apr 22, 2013 | 09:26 PM
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Heres what the brain surgeons came up with on plugging the emissions on my truck. Note the sharpie in the air tube. If you find the size of the plugs for the manifold please let me know.

 
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Old Apr 23, 2013 | 12:20 AM
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Originally Posted by 85lebaront2
If you simply remove the vent lines at the tanks, then they will vent under the truck. On the exhaust air tubes, if you can get the fittings out of the manifolds, they are a tapered pipe thread. There is also a pipe across the rear of the heads that the air system feeds into. If you simply remove the air check valve from it and either cap or plug the tube you will be OK on that one.

EGR, mine had a BB installed in the vacuum line from shortly after I bought it. Leave the thermal valve in the spark advance though.
You can route the vent hoses to the highest point you can find near the tank.

Ford had a few cars blow up when evaps first were intro'd. A few people fueled up in a cold weather area and drove south, into a hot day. More fumes and liquid than the system could handle. Poof! Like I said, probably won't happen, but have you ever been involved in a gasoline fire?
 
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