1984 k5 6.2 emissions

[Cucv_M1008]

Put a J code intake on that thing.

 

[RYNO84]

Put a J code intake on that thing.

I’m gonna see if she runs first! if she checks out I have all the goodies from a 6.5 to turbo it. I run into some electrical problems today. Hopefully I can get them sorted out soon.

 

[Simple91]

Here’s the pics I promised you of the egr shutter that you should cut out. See the restrictiveness? If you don’t want to cut it out or disconnect the exhaust, you can disconnect/remove the actuator and weld or wire the shutter open.

1. Make sure crank turns with a 24mm deep socket and breaker bar.

2. Replace ALL fluids and ALL filters including fuel and grease every zerk on the truck.

3. Prime oil and prime fuel.

4. Test glow plugs and make sure they work.

5. Good batteries hooked up to a set of jumper cables on another vehicle and crank away to get it running. Might take awhile to get the fresh fluid flowing threw the whole system. You could easily see 30+ minutes of cranking with breaks before it fires up. Crank 8 seconds, take 1 minute break. Repeat.

6. You can pour some diesel fluid in the intake or WD-40 to help ease the hard start.

7. Once it is running, expect every gasket, O-ring, hose, etc to leak or sweat from the old age of dry rot.



The 6.2/6.5 diesels are exempt from smog and emissions in all states from my understanding because they are considered a classic/vintage car. Some motors even have an exempt sticker on the motor/valve cover so the inspector can verify. Best to ask an inspector and double check the codes before modifying anything.

Edit: Also get the compression test done asap! If your compression is good, I recommend a turbo! Adding a turbo to a 6.2 really makes a huge difference and will bring you big smiles. Also expect to get many many compliments and questions every time you stop at a gas station. After awhile, they get annoying.

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I was thinking on my 91 EGR suburban I could remove the passenger side manifold butterfly valve and all and replace it with a non EGR/J-code exhaust manifold eliminating the valve piece and the exhaust will bolt right back up. Am I right?

 

[2INSANE]

I was thinking on my 91 EGR suburban I could remove the passenger side manifold butterfly valve and all and replace it with a non EGR/J-code exhaust manifold eliminating the valve piece and the exhaust will bolt right back up. Am I right?

Yes a non egr j code exhaust manifold will work and bolt right up. Might have to lift the motor to clear the frame

 

[Simple91]

Yes a non egr j code exhaust manifold will work and bolt right up. Might have to lift the motor to clear the frame

The J code is the same length as a C code with the valve section?

 

[2INSANE]

The J code is the same length as a C code with the valve section?

I don’t have both side by side to compare for you at the moment.

 

[RYNO84]

@2INSANE so I’ve finally started on my engine repairs and had a question about the vacuum pump. The one I have doesn’t have speed sensor! If this is right where is it? T-case?

 

[2INSANE]

@2INSANE so I’ve finally started on my engine repairs and had a question about the vacuum pump. The one I have doesn’t have speed sensor! If this is right where is it? T-

That pic I posted of the ESS oil pump drive with the sensor on top was just a reference picture to help you out. It gives a signal for a tachometer not for speed. Your speed signal/cable is on passenger side of your transfercase.