Gary Lewis

Mine points at 0 with the engine off. I can't say it is perfect, but it seems to be about right.

I doubt it. Usually it either works or doesn't. But I can't imagine it would subtract 500 R's. I'm staying with the needle being on wrong.

The same radiator support does not fit "1980 - 1986 Ford Bronco F150". They changed in '85, so there are 1980 - 84 and 1985 & 6 supports. And there differences between gas & diesel engines, and standard vs super cooling. So the buyer had better beware. But, that one might be a good buy for the right application.

And now for that 97-page chapter in the 1980 FSM entitled "Light Duty and Heavy Duty Truck Engine Diagnosis and Service". I've added it to the page at Documentation/Engines/General Engine Service, which took a bit of reorganization of that page. And I've included the index page, below left, and the 2nd page about PCV valves on the right. (Did you know there two types of PCV valves???) So you can see the type of information that's in the document. As you can see, there is a whole more info in that document than just "engine diagnosis". So I may extract the "Emission Control System Diagnosis & Service Procedures" stuff, section by section and include them in the related pages. For instance, we have several pages on air cleaners (Documentation/Fuel Systems/Air Cleaners/...) and I could put the Air Cleaner Temperature Control Systems section there. So I'd like y'all to look it over and let me know if you see something in there that we need to include elsewhere. Or, something we should like to from elsewhere.

Also, I discovered in the 1980 document that there's the statement below on Page 5. So I did a bit of research and found SSD-4 & 5 in a 97-page chapter called "Light Duty and Heavy Duty Truck Engine Diagnosis and Service". I scanned it in and then extracted SSD-4 & 5 and inserted them at the end of the 1980 Thermactor FSM document. So if you click on the blue box around SSD-4 or SSD-5 (in the document, not here as that's a picture) you'll be taken to the respective page. For reference SSD-4 is "Thermactor System - Non-Catalytic" and SSD-5 is "Thermactor System - Catalytic". And they have testing and repair procedures. https://forum.garysgaragemahal.com/file/n107590/Thermactor_Statement.jpg

Also, I discovered in the 1980 document that there's the statement below on Page 5. So I did a bit of research and found SSD-4 & 5 in a 97-page chapter called "Light Duty and Heavy Duty Truck Engine Diagnosis and Service". I scanned it in and then extracted SSD-4 & 5 and inserted them at the end of the 1980 Thermactor FSM document. So if you click on the blue box around SSD-4 or SSD-5 (in the document, not here as that's a picture) you'll be taken to the respective page. For reference SSD-4 is "Thermactor System - Non-Catalytic" and SSD-5 is "Thermactor System - Catalytic". And they have testing and repair procedures.

I ran an Edelbrock intake and 600 CFM Performer carb on a warmed up 351M and it ran great. All the carb that engine needed. And I ran the same carb on Big Blue for a bit and it worked fine, but the 750 CFM has more high-end power so that's what I'm running. I think a 600 is probably adequate for a stock 400. (There's no "M" on a 400. There was no other 400 so Ford saw no need to add an alpha suffix for it like the did with the 351's.)

For today's announcement: We now have the 1980 factory shop manual section on thermactor systems on the site. And I've also included the sections from the 1982 and 1986 Engine Emission Diagnosis manuals on the page. They are at Documentation/Emissions/Thermactor Systems. (Yes, the '82 and '86 info is still on the pages in the respective Engine Emissions Diagnosis books, but it seemed appropriate to include it on the Thermactor page as well.) In '80 the thermactor chapter was in the Engine book of the FSM. But in '81 it says to refer to the Engine Emissions Diagnosis book so apparently that is when Ford came out with the generic info on the various emissions systems. I say "generic" as the emissions book covers all vehicles where the factory shop manuals cover specific vehicles.

Bill - Those might be very helpful to have on the site. And, easy to scan! I'll pay the shipping.

Thanks, Bill. I think the DeeZee info came from Scott/kramttocs, but I'm not sure. I probably should document those things.

Christopher - We now have the 1980 factory shop manual section on thermactor systems on the site. And I've also included the sections from the 1982 and 1986 Engine Emission Diagnosis manuals on the page. They are at Documentation/Emissions/Thermactor Systems. (Yes, the '82 and '86 info is still on the pages in the respective Engine Emissions Diagnosis books, but it seemed appropriate to include it on the Thermactor page as well.) Sorry that I don't have the 1981 info. In '80 the thermactor chapter was in the Engine book of the FSM. But in '81 it says to refer to the Engine Emissions Diagnosis book, and I don't have the '81 version of that. So 80, 82, and 86 were the best I can do. Hope that helps.

The wire I'm talking about is just the ground that tells the tach to go into 8-cylinder mode. So I'd think it was either in 6 or 8 mode. But I think you are onto something about the needle. If it is consistently 500 R's off then it isn't that ground. In fact, it is hard to imagine what it could be other than the needle being offset. I've pulled the needles off tachs and put them back in, and it can be done fairly easily. I think I'd note where it is, pull it off, and put it back on 500 R's higher.

$23 and free shipping! Wow! Fits the rare/unusual 80/86 F-U100/350, Super Duty - - Hi-output heater

This is puzzling. The MPC has two entries for part number E1TZ 9047-J. 80 F250/350(81) E0TZ 9047-S r/b E1TZ 9047-J 81/on F100/350 (Regular Cab and Super Cab) & 81/on F250/350(Chassis Cab) E1TZ 9047-J The puzzling thing is the "81" that I made bold in the first entry. Ford uses "83" as the body code for Flaresides & "99" for Stylesides, and I first thought that it was a typo. But then I realized that there are several of them in that area of the MPC an they all take the form of "80/ FXXX/350(81)". So, are they saying that the 1981 F350's also used the original E0TZ 9047-S part?

Not a bad price for that. I tried to summarize what it fits in a few words, but decided it was easier to show you:

Bill - That makes sense. I love the mechanical gauges for their simplicity and the fact they normally have 270 degree sweeps. But I hate them for the bulb that is so hard to get through the firewall. So I fully understand. Good luck! HrdAngln - You have been BUSY! On the dual battery separator, I really like the Cole Hersee 48530 Smart Battery Isolator. It is rated for 200 amps continuous and 750 amps inrush, so will handle everything my 3G will throw and will let the aux battery help the main battery start the engine if needed. If I remember the specs correctly, it will parallel the batteries 2 minutes after one of the batteries reaches 13.2 volts, so you know the alternator is working and that battery has gotten some charge. And it will keep them paralleled until the batteries drop to 12.7 volts, so you won't drain both batteries if there is a load on one of them. And there's a function where you can push a momentary button and force the batteries into parallel for one minute, which allows the aux battery to help the main battery start the vehicle.

That's very possible.

Is it 500 RPM slow at all engine speeds? That doesn't sound like 6 vs 8 cylinder mode. In 6 cylinder mode the tach will show 3/4's of what the engine is turning, so at 800 RPM it'll show 600, and at 4000 RPM it'll show 3000. Have you checked for a ground on the black/light green wire going into the plug on the instrument cluster? That is Circuit 60 and is Pin 12 of the connector. If that isn't grounded then the tach will be in 6 cylinder mode. And since the ground comes from the distributor and the circuit goes through several connectors it is possible the circuit is broken. And, by the way, all engines use the same printed circuit on the back of the instruments. By that I mean the same printed circuit is used for 6 cylinder and 8 cylinder engines. The only way the tach knows which mode to go into is via Ckt 60. So if it isn't grounded you are in 6 cylinder mode.

Well, I think I helped things. I replaced "On Site" with the year of the publication. IOW, in the 1980 column all of the "On Sites" now read "1980", and the same is true for each year. So as you scroll down it is easy to tell what year something is. And, I changed the "1980" at the top of that column to "80", etc all the way across to "96". That let me make each column skinnier so the whole spreadsheet is narrower and there is less side-to-side scrolling needed. However, I haven't truly solved the side-to-side scrolling issue. Until I figure out something there you'll just have to keep your eyes on the row you are interested in if you are on a mobile device.

Looks good. But you said ""gonna do the heat gauge another day". Is the heat gauge the one dangling?

Thanks, Bill. I thought I'd put the '90 and '95 stuff on the shelf if you don't want it. And I won't tear up the '96 stuff. In fact, I may start scanning it tomorrow. We shall see. But I want to do the thermactor scanning first.

Interesting. I've only sold two Bullnose trucks after working on them "significantly". The '82 Explorer got a new engine and I ported the heads myself. And Rusty required both the rear diff and the t-case to be rebuilt, and I swapped engines with Dad's truck and then put it back. Plus there was a whole lot of other work done on both trucks. But in both cases I sold them because I was getting another truck - Dad's truck replaced the Explorer, and Big Blue replaced Rusty. But now that I have "extensive" work on both of these trucks I could never sell them. They've become part of me. Or I'm part of them. So I don't see how you do one so in-depth and sell it. But both you and Cory apparently do that.

That looks really good. With the POR-15 on top of it things should be well and truly sealed.

Sounds like the community is functioning well - sharing.

We don't have the shop manual section on the thermactor systems on the website, but I can probably fix that tomorrow. I have the '81 and '85 factory shop manuals and will cut the sections out, assuming they differ, and put them on the site. However we do have the 1982 Engine Emission Diagnosis manual on the site and there is a section on thermactor systems here: https://www.garysgaragemahal.com/thermactor-systems1.html