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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » Do you have to plug the lower intake EGR port?

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    6/10/2020 9:23 AM  #1

    TremendousWand
    I FYI 24-7

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    Registered: 5/16/2013
    Posts: 657

    Do you have to plug the lower intake EGR port?

    1966 Mustang Coupe, 1988 5.0 Swap, GT40 Heads, GT40 upper and lower intake, T5z, MAF, EFI

    I did the EGR delete.  I just bout the aluminum spacer plate that has the mounting holes for the throttle cable and did away with the whole thing.

    The heater rail port was plugged.  The back of the lower intake never had a port drilled so that took care of that and like I said I just replaced the EGR throttle body spacer w/ a plate.  But there is still the EGR port in the center of the lower intake. 

    https://ibb.co/YWSCKst

    If I don't plug that, what happens? 
    If I do plug it, what happens?

    thanks

     

    6/10/2020 3:05 PM  #2

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,509

    Re: Do you have to plug the lower intake EGR port?

    Typically the intake gaskets come with plugs for the ports in the heads.  That's how that port is blocked.  If it has nowhere to go though I wouldn't worry about it.  Its just going to deadhead where it hits the spacer that has no provisions for it. 

     

    6/10/2020 3:05 PM  #3

    Nos681
    Senior 24-7 FYI Addict

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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,337

    Re: Do you have to plug the lower intake EGR port?

    TW...I am asking to clarify
    .
    Do you have the matching upper?
    From my understanding, you blocked the egr ports at both cylinder heads?

     

    6/10/2020 3:16 PM  #4

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,509

    Re: Do you have to plug the lower intake EGR port?

    No, he removed the factory EGR spacer and installed a solid spacer with no EGR provision.  The spacer sits between the throttle body and the upper intake. 

     

    6/10/2020 4:34 PM  #5

    Nos681
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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
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    Re: Do you have to plug the lower intake EGR port?

    Understand the spacer plate replacing the EGR spacer.

    I’m a bit corn...fused about:

    “The back of the lower intake never had a port drilled so that took care of that and ....”

    Then adds picture of early Explorer lower intake with egr passage.

    Just wanted to verify ports at cylinder heads were blocked prior to giving advice.

    I wasn’t going to assume that TW has a matching intake set.
    Especially if you get early lower and later upper and don’t have cylinder heads blocked off.

     

    6/11/2020 5:22 AM  #6

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,509

    Re: Do you have to plug the lower intake EGR port?

    Yes, that's confusing because the only port in the back of the intake I know if is for the PCV valve and filter.  This may have been eliminated on later designs if the PCV was moved. to another location. 

     

    6/11/2020 7:12 AM  #7

    TremendousWand
    I FYI 24-7

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    Registered: 5/16/2013
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    Re: Do you have to plug the lower intake EGR port?

    TKOPerformance wrote:

    Yes, that's confusing because the only port in the back of the intake I know if is for the PCV valve and filter.  This may have been eliminated on later designs if the PCV was moved. to another location. 

    Let me try and clear this up:

    https://ibb.co/HpMrF2x
    https://ibb.co/RPbjsxj

    Talking about 2 different things, but I'm only asking about one.
    The coolant lines that normally would run from the heater rail and then to the EGR Spacer and then to the back of the intake coolant port are all taken care off.  My particular lower intake is from a newer explorer that didn't have the port for the rear coolant line drilled anyway.  (See image)  My question is regarding plugging the center exhaust port in the lower intake.  Is this required since I removed the EGR throttle spacer all together?

       •Thread Starter
     

    6/11/2020 7:14 AM  #8

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,509

    Re: Do you have to plug the lower intake EGR port?

    TKOPerformance wrote:

    Typically the intake gaskets come with plugs for the ports in the heads.  That's how that port is blocked.  If it has nowhere to go though I wouldn't worry about it.  Its just going to deadhead where it hits the spacer that has no provisions for it. 

     

     

     

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