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proper EGR removal?

78Suburban

78Suburban

1/2 ton status
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missingEGR2.jpg


missingEGR1.jpg


I just snapped these pics of my new motor with a flashlight.
I believe that these two places on the motor are where the EGR was removed (I think).... so how should I properly plug them?
thanks,
James
 
Just make a block off plate to go over it. Or I think you can actually buy one. I don't remember. Anyways, I just made a block off plate and used an old gasket.
 
KidJethro said:
Just make a block off plate to go over it. Or I think you can actually buy one. I don't remember. Anyways, I just made a block off plate and used an old gasket.
Click to expand...

so I make a block off plate for the thing on the left? what about the little hole thing on the right? (pardon my overly technical jargon :haha: ) got any pics of the block off plate? So I can buy an EGR gasket at the parts store?
thanks,
James
 
A motor with a flashlight, $29 from QVC. KidJethro is right.:D Make your plate the same shape as the gasket.
 
Yeah jsut tell them you need an EGR valve gasket. Use that as a template for the block off plate. You only need to transfer the two bolt holes and the outter shape of the gasket to make your plate.
 
roadnotca said:
A motor with a flashlight, $29 from QVC. KidJethro is right.:D
Click to expand...
so the block off plate is $29? what is QVC? I may just make a plate, can't be too hard...

So how should I plug the stuff on the right, is that part of the EGR too?
thanks,
james

PS: how do you like my "motor with a flashlight" :p: ?
 
LOL! QVC is the home shopping thing you see on tv...He was taking a stab at your flashlight/camera. An EGR block off plate certainly wouldn't be $29. Just make one, it's free.

The stuff on the right is for a hot air choke. You don't need to block those of, as all it does is carry heat from the manifold to the choke.
 
cool, I'll make a plate :D guess I'll try to get an EGR gasket and put a little red RVT on it for good measure.

The truck has an electric choke, so does that hot air choke thing even go with that? or was that from a previous carb?
thanks,
james
 
So will not having an EGR system significatly change how the engine runs, one way or the other?
 
James I meant to tell you a that. :o

I was going to make you a plate but once again was short on time. I think you may be able to get them from advance also for a couple of dollars. The old egr and bolts are under the motor on the pallet.
 
clarkjw24 said:
The old egr and bolts are under the motor on the pallet.
Click to expand...
sweet, I was just wondering about the bolts.. I think I'll just make a plate, it can't be that hard. If I get an EGR gasket and some gasket maker, it should seal up fine. :p:
Is there anything else I'm gonna need to plug or address that I haven't noticed?
thanks,
James

PS: John, thanks so much for helping me out with my motor situation ;)
 
All I can think of is:

Block off egr.
2 bolts in the fuel pump ( I had to take it loose to get the motor mount bolt out)
plug in your oil press line at the back of the block.
 
If you have the stock carb on the motor, it will affect part throttle cruise.

Some people fail to understand that fueling is different when EGR is factored into the equation, and the Q-jet factors that in with the primary metering rods. If you pull EGR, and don't change the rods/jets on the primary side, you will run lean at cruise.
 
dyeager535 said:
If you have the stock carb on the motor, it will affect part throttle cruise.

Some people fail to understand that fueling is different when EGR is factored into the equation, and the Q-jet factors that in with the primary metering rods. If you pull EGR, and don't change the rods/jets on the primary side, you will run lean at cruise.
Click to expand...
OUCH... whats the proper way to address this tuning issue, so that I won't be lean? How lean are we talking, like screw up the motor lean, or just not optimaly tuned?
 
so how do I tune the carb to run correctly without EGR? Will it cruise lean enough to harm my engine? Please help, what should I do?
thanks,
James :bow:
 
Engines CAN run lean without damage, but to determine at what point it's too lean, well, it would take a whole lot of research.

In cases where I've run a Q-jet that was originally on an EGR equipped motor, the lean condition evidenced itself by the vehicle surging at light throttle cruise.

I richened the rods up one "step", and the surge went away, without a penalty in economy. Again, the operation of a carb is fairly precise if you actually want to spend the time tuning it (power piston spring, inches of vacuum, etc depending on year of carb) but you could always run an O2 sensor setup if you just wanted to verify it wasn't constantly lean.
 
dyeager535 said:
Engines CAN run lean without damage, but to determine at what point it's too lean, well, it would take a whole lot of research.

In cases where I've run a Q-jet that was originally on an EGR equipped motor, the lean condition evidenced itself by the vehicle surging at light throttle cruise.

I richened the rods up one "step", and the surge went away, without a penalty in economy. Again, the operation of a carb is fairly precise if you actually want to spend the time tuning it (power piston spring, inches of vacuum, etc depending on year of carb) but you could always run an O2 sensor setup if you just wanted to verify it wasn't constantly lean.
Click to expand...

how do you richen it up one "step"? which screw did you turn to do that?
 
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