What is this?
Senior User
Joined: Mar 2018
Posts: 112
Likes: 0
Is there a write-up anywhere on total emission systems removal? For example what can be removed, what needs to be plugged or capped off, any replacement parts needed? I bought my 75 specifically because it's smog exempt but the engine bay looks like a cluster-f. I'll save the planet the 29 days a month I'm not driving the truck.
Thread Starter
|
Mountain Pass
Joined: Jun 2016
Posts: 168
Likes: 0
I didn't remove anything, pulled the motor cause son blew it. The only emission stuff on the motor is that smog pipe and egr plate. Whoever had it before me must have got rid of all of it except what I listed. I am going to go back with aluminium intake and won't put the egr plate back on. I suppose I will try to see if matching shop will plug the hole where pipe went.
Lead Driver
Joined: Jul 2017
Posts: 9,608
Likes: 1,177
From: San Jose, CA
I hate to be the one to suggest one more layer of hassle, but things like that are actually very sellable at the right time. Most of it got tossed, but as soon as someone tries to register a '76 or later truck in CA they're SOL on getting it smogged if they can't find the replacement parts.
So with trucks being so popular these days, more and more people are looking for that kind of thing.
Paul
So with trucks being so popular these days, more and more people are looking for that kind of thing.
Paul
Trending Topics
Post Fiend
Joined: Jun 2003
Posts: 8,209
Likes: 12
From: Black Hills of SD
I think the front of the head has the same holes only blocked so you can see what size of welch plugs you need to block the holes. It's been a long time but I think I plugged some off in the car by just using a piece of strap with a hole drilled for the bolt and sealer.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
Since I don't know the year or engine size, I cannot post the parts catalog pic.
Logistics Pro
Joined: Jul 2005
Posts: 4,217
Likes: 154
That is an Upstream Air tube. Smog pump sends air to the heads until warmed up, and then the air gets routed Downstream to the exhaust/converter.
The hose with clamps and large bolt aren't necessary because they're connected to a check valve which prevents exhaust leaks - unless the check valve is bad.
I've never seen one like that, and I can't tell how it's fastened to/at the heads. There's almost no way that both bolt-head-ends could thread into both heads, but they look like the heater hose 'rail' on an EFI 5.0 SBF - and that does thread into the lower intake on those engines. Maybe one side threads in, and the other is merely pushed in? I don't see any retaining bolts on either side.
On the SBF heads you can thread a spark plug into the hole on the heads. Or you can cut the head ends off of the tube and bolt them on backwards, and they'll plug the holes good enough.
The hose with clamps and large bolt aren't necessary because they're connected to a check valve which prevents exhaust leaks - unless the check valve is bad.
I've never seen one like that, and I can't tell how it's fastened to/at the heads. There's almost no way that both bolt-head-ends could thread into both heads, but they look like the heater hose 'rail' on an EFI 5.0 SBF - and that does thread into the lower intake on those engines. Maybe one side threads in, and the other is merely pushed in? I don't see any retaining bolts on either side.
On the SBF heads you can thread a spark plug into the hole on the heads. Or you can cut the head ends off of the tube and bolt them on backwards, and they'll plug the holes good enough.
Thread
Thread Starter
Forum
Replies
Last Post
Alcaeus
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
17
Sep 19, 2010 07:48 PM
wetzel2nd
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
1
Mar 5, 2006 10:30 PM
rich gill
1987 - 1996 F150 & Larger F-Series Trucks
18
Jan 19, 2004 10:19 PM
jrs_big_ford_f150
Ford Inline Six, 200, 250, 4.9L / 300
4
Dec 25, 2002 11:43 AM