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 Post subject: Re: 1983 Bronco Project
PostPosted: Tue Jul 28, 2015 10:11 pm 
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Yeah, I should've been more clear. It is where the intake manifold and the head make contact.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Sat Aug 01, 2015 5:26 pm 
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I pulled the manifolds today.
Image

It's too hot to do any more work outside until tomorrow. Some small pieces of metal tubing that ran up from the exhaust manifold to the carb also had rusted through and broke off. My guess is their purpose is to heat up parts of the carb. I'll do some more research later.

Tomorrow I'm going to start cleaning stuff up, and after it gets hot again I'm going to go get more tubing and the tools needed to bend it.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Sat Aug 01, 2015 6:30 pm 
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Looks like a sweet project! My brother had one very similar, but black, and was an '84. Same powertrain configuration though. Good luck with it!

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 Post subject: Re: 1983 Bronco Project
PostPosted: Sun Aug 02, 2015 10:35 am 
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should have been a part of the EGR/ AIR tube

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 Post subject: Re: 1983 Bronco Project
PostPosted: Mon Aug 03, 2015 1:02 am 
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It looks like they're called "choke tubes". Every other vehicle I've owned has either had electronic or mechanical fuel injection (K-Jetronic FTW). I'm learning a lot working on this project.
The EGR pipe is fine.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Sun Aug 23, 2015 12:47 pm 
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She's back together now, and I'm getting about 21" of mercury on the gauge.

When I pulled the intake manifold, a couple of the flanges fell off. I went to the boneyard to get another manifold, but the only one I could find also had a broken flange. I picked up a new one and I'm back in business.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Sun Aug 23, 2015 5:33 pm 
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The tiny tube from the exhaust to the carb is a heat tube for the choke. You can get a whole new tube (and you should) for about ten dollars. A heat rise choke works wonderfully when the tube is good.

Good luck with the rest of the project, a friend bought a non-running '97 Bronco that we have been working on.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Sun Aug 23, 2015 7:50 pm 
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I just made another one out of brake line. I bought a big spool of it and bending tools pretty inexpensively.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Mon Aug 24, 2015 2:07 am 
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Did you ever fix the hole in the brake backing plate? The little flat spot that the shoe rides on?


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 Post subject: Re: 1983 Bronco Project
PostPosted: Mon Aug 24, 2015 10:28 am 
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I haven't yet. I need new leaf springs so I figure I'll take care of that around the same time.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Fri Sep 25, 2015 11:35 pm 
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Did you get new leaf springs yet?

My '90 RamCharger needs new front leaf spring bushings.

I am debating on whether to put a lift kit on it and larger tires

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 Post subject: Re: 1983 Bronco Project
PostPosted: Wed Oct 28, 2015 12:48 am 
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I didn't. I had some personal issues come up that ended up being pretty expensive. The clutch also started slipping, and I had a mechanic fix it instead of doing it myself. Financially I should be good to do the springs next month, but I don't know if the weather will cooperate or not (my garage was built around 1920, truck won't fit in it).
At least I have a nice new LuK clutch now, along with a resurfaced flywheel and a non-leaking rear main seal.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Mon Dec 12, 2016 7:49 pm 
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On Saturday I hauled a bunch of crap off to the dump. The truck was pretty grouchy between 1500 and 2000 RPM, and Mrs. Z noted black smoke coming out the tailpipe.
Yesterday I found and replaced fouled spark plugs. This improved things, but the problem is far from fixed. I tried to take it to the local mechanic, but he said that he's currently so busy that he's only taking non-running cars. He told me to try fiddling with the choke and see if it's stuck.
The choke isn't opening, but it isn't stuck either. I let it run for about 45 minutes to find it about half open. If I manually push it open the thing revs smoothly through the problem areas, but as soon as the pressure is gone the choke closes again.
My guess is that the bimetal spring isn't getting hot enough to get the choke to open, or is just plain broken. Assuming that the choke heater is getting power and the choke tubes are in place, I don't know why it wouldn't get warm enough to open. Assuming it isn't too cold or snowing too hard I'll probably get another look at it this weekend.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Tue Dec 20, 2016 10:22 pm 
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It did in fact start snowing and get much colder. Trying to work on the truck simply turned my hands into useless, fleshy flippers unfit for any kind of work. It's at the mechanic now.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Sun Jan 08, 2017 9:32 pm 
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At my request the mechanic converted it to a manual choke and I have it back. The factory air cleaner wouldn't work with the manual choke, so it has a cheapo aftermarket air cleaner box on it for now. After the weather improves I'll decide if I want to go back to the automatic choke, but for the time being it runs pretty well.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Thu Jun 22, 2017 11:55 am 
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I run a manual choke on my truck and after really learning how to use it, prefer it over an automatic. Pretty simply and it almost acts like an anti-theft device if you don't know how to use it. You'll be there cranking for a while.

Sweet Bronco man, a worthy project.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Thu Jun 22, 2017 12:33 pm 
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Thanks, I'm glad to get complements on it. After I finish some stuff around the property this Summer I hope to get some more work done on it.
When you think about it, most automatic chokes probably open long after they really need to. I opened the choke all the way when it was probably 15 degrees out about 45 seconds or so after I started it and it didn't seem to have any issues. Granted it was cold and a little sluggish, but it seemed to drive fine.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Thu Jun 22, 2017 3:07 pm 
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Scale of 1-10, how much of a "car guy" (well, "vehicle guy" I guess) were you prior to purchase? Did you know what you were doing from day one or have you been learning as you go?

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 Post subject: Re: 1983 Bronco Project
PostPosted: Thu Jun 22, 2017 5:09 pm 
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I'd say probably a 6 or 7, maybe an 8. My dad was a mechanic for most of his life and I picked up some things from him. I have never been and probably never will be a professional mechanic. For a long time I was also too poor to afford going to a mechanic, so I tracked down shop manuals for most of my cars. I ended up learning a lot more that way.
Before I owned the Bronco I mostly had Volvos, which are actually very easy to work on. Volvo ditched carburetors in '73 or '74 (they had fuel injection as an option starting in '72), so this is the only carbureted anything I've owned. This is also the only vehicle I've ever owned that has drum brakes.

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 Post subject: Re: 1983 Bronco Project
PostPosted: Thu Jun 22, 2017 5:35 pm 
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Nothing to add other than I love old Broncos. I'm looking forward to Ford's new introduction and I hope they don't ruin it (more raptor, less escape). Besides, I've always wanted an old Bronco after watching Cheap Truck Challenge on Youtube with the Road Kill guys (google it if you've never seen it).

How many bolts did you break getting that inline 6 manifold off? My dad's '93 F150 is in the shop for that reason right now actually...

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 Post subject: Re: 1983 Bronco Project
PostPosted: Thu Jun 22, 2017 5:42 pm 
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Believe it or not, I didn't break any. I hosed the whole thing down with PB Blaster and let it sit overnight. I learned to love that stuff when I had my '78 Volvo 240.

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