Walter, an okay daily and an okay offroader

[GrimsterGMC]

Oh, excellent advice. I did not think about that at all. I guess that's why all those cowl induction hoods go to the windshield. I wonder how old muscle cars handled that. It also brings up the issue of snow and dust. I might just cheat and fake it. I discovered that a lot of people just cut enough for the air filter. I figure if I get a taller air filter then it will be enough to need to cut into the hood.

If you have the air filter up in the scoop cavity then definately run a deflecter sheild around the front face of it as any water that gets onto the filter paper will stop the air passing through and your engine will start running rich from the lack of air.

 

[Orpedcrow]

Cool truck!
I just saw some sun/moon visors the other day… LMC maybe? Maybe eBay, I’m also hunting one for my bosses truck

 

[cjpett]

If you have the air filter up in the scoop cavity then definately run a deflecter sheild around the front face of it as any water that gets onto the filter paper will stop the air passing through and your engine will start running rich from the lack of air.

What do you mean by deflector shield? When I look it up all I get is bug shields, and I doubt that's what you're talking about.

Cool truck!
I just saw some sun/moon visors the other day… LMC maybe? Maybe eBay, I’m also hunting one for my bosses truck

Thanks! Once I figured out what to look for it was pretty easy to find them. Summit has them for 400 dollars, but I know you can find them cheaper.

 

[GrimsterGMC]

What do you mean by deflector shield? When I look it up all I get is bug shields, and I doubt that's what you're talking about.



Thanks! Once I figured out what to look for it was pretty easy to find them. Summit has them for 400 dollars, but I know you can find them cheaper.

By deflector shield I meant a curved strip of metal that sits in front of the filter so that any heavy objects like dirt or water drops get pushed to the sides and goes around the filter and keeps going whereas the the clean air will still get drawn through the back.

 

[cjpett]

By deflector shield I meant a curved strip of metal that sits in front of the filter so that any heavy objects like dirt or water drops get pushed to the sides and goes around the filter and keeps going whereas the the clean air will still get drawn through the back.

Oh, gotcha. I will definitely keep that in mind when I begin working on it. I still have a few things to figure out and more than a few projects to wrap up before I start.

 

[cjpett]

It took two and a half years, but by God I found it. The holy grail of GMT400 interior parts. That's right ladies and gentlemen, I found the fog light switch! Along with it came the rear hatch switch, and the rear windshield wiper switch. I'm really hoping I'll find another, but I doubt it.

I also saw an old GMC semi-truck cab so I was sure to pull some stuff from that unit. I got a little speaker for a CB radio, that I'm going to gut out and replace to use as a speaker for my CB radio, and one of the coolest things I've seen, a Speedometer/Clock combo.

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I decided that I'm going to fix the problems on Walter before I go for the stuff I was talking about earlier. They are pretty simple, so it shouldn't take long, I just need to find some free time. I'm going to fix the windshield wiper pump, the coolant overflow hose leak, my front right ABS sensor, and maybe replace my front brakes while I'm at it. Shouldn't take more than a day, but I just don't have the time right now.

That's about it. Pretty uneventful right now, hopefully things will pick up soon.

 

[GrimsterGMC]

It took two and a half years, but by God I found it. The holy grail of GMT400 interior parts. That's right ladies and gentlemen, I found the fog light switch! Along with it came the rear hatch switch, and the rear windshield wiper switch. I'm really hoping I'll find another, but I doubt it.

I also saw an old GMC semi-truck cab so I was sure to pull some stuff from that unit. I got a little speaker for a CB radio, that I'm going to gut out and replace to use as a speaker for my CB radio, and one of the coolest things I've seen, a Speedometer/Clock combo.

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I decided that I'm going to fix the problems on Walter before I go for the stuff I was talking about earlier. They are pretty simple, so it shouldn't take long, I just need to find some free time. I'm going to fix the windshield wiper pump, the coolant overflow hose leak, my front right ABS sensor, and maybe replace my front brakes while I'm at it. Shouldn't take more than a day, but I just don't have the time right now.

That's about it. Pretty uneventful right now, hopefully things will pick up soon.

I like that speedo/clock combo. That's the cool thing about old cars and trucks, the designers had free range to apply cool ideas, whereas now everything is virtually the same inside and out. No originality, and that's were we all come in. The pick 'n' pull is our palette and our truck is our canvas and we create whatever art that makes us happy.

 

[Erik the Awful]

Ooh, the speedometer goes all the way to 70!

 

[Orpedcrow]

What’s inside the secret cubby?

 

[cjpett]

So I learned some things about the clock/speedo. It is Stemco-Sangamo Tachograph. I'm not sure how Stemco is involved, but from what I found Sangamo produced these, or units like these, between the 40s and 80s. They put these in everything from buses, to tow trucks, to semis. It is almost entirely mechanical, with only three wires on the back. One is the ground, one is the backlight, and I'm guessing the other one is constant or ignition.

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This is a tachograph, so it's meant to clock the speed of a vehicle over a given amount of time. The way it does this is really simple yet really cool.

Inside the cubby on the left is where you can set and wind the clock. The clock will only run for 24 hours before you have to wind it again. The center circle with the rectangle is where you would put the sheet that records the speed.

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The three needles under the speedometer is how the speed gets recorded. The center one records the speed of the truck. I'm not sure how the top and bottom needles work, but I know the bottom is where 0 mph is, and the top is 70. As the sheet spins the speed gets recorded. I have absolutely no info on what the sheet looks like or anything like that but I am going to try and find something to see it work.

So like I said, this thing is almost entirely mechanical. The way the speedo works is really cool. I don't know if this is how all mechanical speedos work, but this one uses centripetal force and a bunch of springs. As the truck speeds up, the weights on the left spread out, stretching a spring that moves up the needle and also sets the speedo. At least that's how I think it works.

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This whole unit is really cool and works completely fine from what I can tell. The clock seems to keep time really well. I don't know what I'm going to do with this but I'm glad I have it.

That's all for now! I'm looking forward to learning more about this unit and how it works. I'm getting closer and closer to when I can start working on Walter again, so as soon as that happens I'll be sure to update you guys.