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Secondary Air Mounting location behind Intake

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Old Aug 5, 2024 | 09:06 PM
  #1  
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Default Secondary Air Mounting location behind Intake

Need some help fellas.

2003 Disco II

Had a guy from my church helping me out (actually I was helping him, cause he couldn't find work, I know why now!) he pulled the upper intake to replace plug wires and plugs and in doing so he removed the secondary air. Well, he reinstalled it and hooked everything up correctly but after looking it over I noticed he did not bolt it down behind the intake. Where do the two bolts go into on the 90-degree mounting tab? Have ZERO idea where the location is. Also, what size bolts as mine are clearly missing.

This is the last thing I need to do to get this rig down the road (father in laws).

I appreciate all the help guys. Thanks again!
 
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Old Aug 6, 2024 | 02:06 PM
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Those are supposed to be on the top bolts for the coil bracket. If they aren't bolted down you'll have vibrations going through your SAI pipes and possibly causing them to eventually crack. If your coil bracket isn't bolted down, you can run into issues with poor grounding.
 
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Old Aug 6, 2024 | 06:53 PM
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Neither one needs to be bolted down, there will be no detrimental effects.
 
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Old Aug 7, 2024 | 08:36 AM
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Originally Posted by Extinct
Neither one needs to be bolted down, there will be no detrimental effects.
So why are there so many threads on here where an unbolted coil pack bracket causes poor spark?
 
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Old Aug 7, 2024 | 11:21 AM
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The bolts that secure the SAI pipes do only that. The bottom of the coil bracket is where you need a solid connection to the manifold. I struggled with this one this morning too, but essentially Extinct is correct. The SAI pipe mount that attaches to the coil bracket is not the one with the metal bellows. It's just a tube with rubber hose at the end that connects to the SAI valves. Yes, the could be some vibration there but the rubber should serve to isolate it. The bellows are known to crack so the definitely is some risk involved, but it's probably minor. I did a coil pack relocate on one of my trucks a couple weeks ago and had I thought of it at the time I probably would have installed an empty coil bracket back there to be safe, but I'm not sure it's worth going back for. Maybe one day when I'm really bored.

Edit: The OP didn't clarify if the coil bracket was also loose at the bottom, only the SAI pipes, but if this is also the case then it should definitely be reattached properly.
 

Last edited by ahab; Aug 7, 2024 at 11:29 AM.
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Old Aug 7, 2024 | 11:42 AM
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Weird. I just took the SAI pipes and coils off my parts truck last weekend. The coil pack bracket was bolted to the block using four bolts, with the top bolts also holding the SAI pipe. The same four bolts were there on my previous truck, which didn't have SAI at all. On both trucks, I would have ignition issues unless all four bolts were installed.
It's true that the SAI pipe across the back isn't likely to be too affected by vibrations because of the rubber parts, but I tend to err on the side of caution.
 

Last edited by mollusc; Aug 7, 2024 at 12:36 PM.
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Old Aug 7, 2024 | 12:12 PM
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Well, clearly I'm misremembering how that coil bracket attaches, despite it only being a couple weeks!! I just went out and looked at a non-SAI truck and you're 100% right. The top two bolts do not "just hold the pipe itself", those also bolt to the manifold.
 
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Old Aug 7, 2024 | 06:48 PM
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The issues with coil packs not being bolted down are not due to grounding but due ignition leads contacting other metal parts on the firewall. While it helps to have the coil packs bolted down to a solid ground it is not technically necessary as the ground lead is contained in the wire harness.
 
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Old Aug 8, 2024 | 01:13 PM
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Guys,

Thanks for the response(s).

My SAI pipe mounts is bent at a 90" angle and the bolts for the intake are on a 180 degree plane so I do not see how I can secure it. With all being said Im just gonna send it and fight the fight on the next one in my garage.

Thanks again!
 
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Old Aug 9, 2024 | 06:46 PM
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Originally Posted by ahab
The bolts that secure the SAI pipes do only that. The bottom of the coil bracket is where you need a solid connection to the manifold. I struggled with this one this morning too, but essentially Extinct is correct. The SAI pipe mount that attaches to the coil bracket is not the one with the metal bellows. It's just a tube with rubber hose at the end that connects to the SAI valves. Yes, the could be some vibration there but the rubber should serve to isolate it. The bellows are known to crack so the definitely is some risk involved, but it's probably minor. I did a coil pack relocate on one of my trucks a couple weeks ago and had I thought of it at the time I probably would have installed an empty coil bracket back there to be safe, but I'm not sure it's worth going back for. Maybe one day when I'm really bored.

Edit: The OP didn't clarify if the coil bracket was also loose at the bottom, only the SAI pipes, but if this is also the case then it should definitely be reattached properly.
which coil pack relocation kit did you chose?
 
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