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proper EGR removal?

Discussion in 'The Garage' started by 78Suburban, Dec 4, 2005.

  1. 78Suburban

    78Suburban 1/2 ton status

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    [​IMG]

    [​IMG]

    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
     
  2. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    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.
     
  3. 78Suburban

    78Suburban 1/2 ton status

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    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
     
  4. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    You can see the one I made in this picture...Held on by the two allen bolts.
    [​IMG]
     
  5. roadnotca

    roadnotca 3/4 ton status

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    A motor with a flashlight, $29 from QVC. KidJethro is right.:D Make your plate the same shape as the gasket.
     
  6. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    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.
     
  7. 78Suburban

    78Suburban 1/2 ton status

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    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: ?
     
  8. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    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.
     
  9. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    This EGR plate is from Summit. $8.69.
    [​IMG]
     
  10. 78Suburban

    78Suburban 1/2 ton status

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    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
     
  11. 78Suburban

    78Suburban 1/2 ton status

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    So will not having an EGR system significatly change how the engine runs, one way or the other?
     
  12. clarkjw24

    clarkjw24 1/2 ton status GMOTM Winner

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    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.
     
  13. 78Suburban

    78Suburban 1/2 ton status

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    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 ;)
     
  14. clarkjw24

    clarkjw24 1/2 ton status GMOTM Winner

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    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.
     
  15. dyeager535

    dyeager535 1 ton status Premium Member

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    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.
     
  16. 78Suburban

    78Suburban 1/2 ton status

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    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?
     
  17. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    I'd run the egr valve , and help burn those gasses . Ain't gonna make the truck any slower :D
     
  18. 78Suburban

    78Suburban 1/2 ton status

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    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:
     
  19. dyeager535

    dyeager535 1 ton status Premium Member

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    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.
     
  20. 78Suburban

    78Suburban 1/2 ton status

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

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