Build 1984 Root Beer in Vermont - Build

[Seth S]

Tried freeing the valve again but no go. So decided to see if the rail would come off so it was easier to work on. Managed to loosen a couple of the keepers and then had one where the end of the injector fitting broke off in the fitting. So I had to pull the rail. Thankfully #6 was not problematic. 3 came easy. Three are ugly. At this point if I had to put it all back together stock I’d just shell out for a clean used one. But I suspect that the bad fittings on this rail could be cut off and replaced. Not sure about what temp requirements are but it looks like new bends and screw caps could be made up, the old pipes cut, and then soldered on with a butt connector.

In my case desmog is the preferred route.

 

[Seth S]

Two fighting voices in my head. First one says take the driveline out and make it all pretty. Other voice says fix it and drive it you idiot. I’m in middle of desmog and just need some parts to finish. I’ll hokd off on voice number one until winter when it makes sense to park truck in a cave for the winter.

 

[Seth S]

With all the air pump stuff out of they way you can actually see the front of the engine and the top of the steering box . Unfortunately I was able to verify that all my steering slop is indeed coming from the box....so time for a rebuild or replace.....put it on the list.

 

[NeverGiveUpYota]

With all the air pump stuff out of they way you can actually see the front of the engine and the top of the steering box . Unfortunately I was able to verify that all my steering slop is indeed coming from the box....so time for a rebuild or replace.....put it on the list.

Rebuild the box. It’s really quite easy and straight forward. The bleepin jeep video is really great for lighting and speed. The box is enough the same that as long as your open minded, it’ll make complete sense.

 

[Seth S]

Rebuild the box. It’s really quite easy and straight forward. The bleepin jeep video is really great for lighting and speed. The box is enough the same that as long as your open minded, it’ll make complete sense.

I was considering doing it myself. I'll put it on the list for after I get the desmog done.

 

[vtcruiser60]

I’ve got a bunch of desmog parts here in Burlington if you need help. Just give me a shout.

 

[Seth S]

I’ve got a bunch of desmog parts here in Burlington if you need help. Just give me a shout.

I ordered a bunch of stuff from JimC yesterday thanks for the offer though. How hard is it to remove the egr from the exhaust manifold while its in the truck? i've gotten everything out so far from the intake manifold including the valve and plate. Still have to pull the piece off the side of the engine and then figure out best way to plug that lower pipe...or figure out if I can pull the pipe and seal the exhaust manifold while its in the truck.

 

[NeverGiveUpYota]

I ordered a bunch of stuff from JimC yesterday thanks for the offer though. How hard is it to remove the egr from the exhaust manifold while its in the truck? i've gotten everything out so far from the intake manifold including the valve and plate. Still have to pull the piece off the side of the engine and then figure out best way to plug that lower pipe...or figure out if I can pull the pipe and seal the exhaust manifold while its in the truck.

Some have pulled the pipe and plugged the hole w/ a coin and jb weld, I think... or get someone to weld it.

 

[Seth S]

Some have pulled the pipe and plugged the hole w/ a coin and jb weld, I think... or get someone to weld it.

Nevermind...I'm just an idiot with poor picture recognition

I'll just make my own block off plate for the port on the side of the intake manifold.

 

[FJACS]

You can desmog and keep the functionality of the EGR.

 

[vtcruiser60]

I ordered a bunch of stuff from JimC yesterday thanks for the offer though. How hard is it to remove the egr from the exhaust manifold while its in the truck? i've gotten everything out so far from the intake manifold including the valve and plate. Still have to pull the piece off the side of the engine and then figure out best way to plug that lower pipe...or figure out if I can pull the pipe and seal the exhaust manifold while its in the truck.

I believe I bought the part from JimC that plugged the exhaust manifold itself. There are a bunch of vendors that sell that exhaust manifold block off plate. I cut the stainless steel pipe off of the exhaust downpipe, and welded that closed on the exhaust pipe.

 

[NeverGiveUpYota]

Nevermind...I'm just an idiot with poor picture recognition

I'll just make my own block off plate for the port on the side of the intake manifold.

And I’m aflake too cuz I was thinking of the other end that some plug w/ a coin.

 

[Seth S]

I was looking at Jim's parts list and he sells a machined plug that is intended to plug pipe that comes off the intake manifold and goes into the EGR valve. I skipped that plug thinking the block off plate was for the intake. So I'll just run over you my friends shop and machine up an aluminum plate to block off the manifold itself and then probably use some gasket material to make a gasket to seal it. Loctite 518 would likely also work but gaskets are easy to make for these applications.

 

[Seth S]

A side note: while I was pulling things apart I found a lot of broken vacuum lines that were hidden from view with all the parts in there. Also found the lower BVSV that appeared to be connected....did have two lines going to it but upon closer inspection realized both nipples were broken off the valve. So moral of story...truck ran pretty well and was driven many thousands of miles with no observed ill affect. Looking forward to seeing if anything feels different once Desmog/EGR delete is done. Will make a good baseline before swapping to EFI.

 

[NeverGiveUpYota]

moral of story..

Our tractor engines can take a ton of neglect. It’s amaxing how well they can run when so much is wrong.

 

[Seth S]

Progress. Head plugs are in and EGR is removed. Air pump out and air control system out.

That little plate was a pain to get to but I got all kinds of lucky in that everything came apart and nothing broke or stripped. Only piece left that I need to make is a block off plate for the intake manifold. And then reroute the lines. I’ll call Jim C this week and find out about carb and distributor. A month turn around would work well given my schedule.

 

[Seth S]

 

[Seth S]

Working my way slowly through the vacuum line routing on the desmog. And trying to make it look nice too.

 

[Seth S]

Ok truck started up and is running fine. I have just about everything hooked up but I’m confused by a few things. Maybe @FJ40Jim or another can shed some light.

First there is a vacuum line running off the vanes post fitting on the back of the head....the one with the vacuum hose feeding the brake booster. The line runs to some sort of valve with an electrical connector and then I don’t remember where the second line off that valve goes. Or if the piece should be removed and capped.

Second bit of confusion is that there are 3 vacuum diaphragms on my stock Aisin carb. I left the first one connected as stock. But not sure about the other two and the write ups I have on desmog are losing me. Also can’t quite understand the Toyota diagrams.

 

[Seth S]

Ignore that vac line running off the top left diaphragm. I was playing with things.

Ok. Found a note at the end of the how to desmog write up. The vacuum line and switch are part of the AC idle up circuit. I’m guess it attaches to the left most diaphragm on the carb. Now I’m just not sure about how the choke opener is supposed to be.