Intake manifold question. - Ford Mustang Forum
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post #1 of 14 (permalink) Old 01-18-2020 Thread Starter
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Intake manifold question.

I just bought the Ford racing Intake manifold, and on the crossover part it’s got two holes in the top. What are these for? Do I need to plug them?

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post #2 of 14 (permalink) Old 4 Weeks Ago
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They are for the coolant temp sensor. Install the temp sensor in the corresponding location as your original and use the supplied plug for the other. Be sure to use thread sealant on both. The un-used hole is for other vehicle applications such as the F150 and Crown Vic which have the coolant temp sensor located on the other side.


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post #3 of 14 (permalink) Old 4 Weeks Ago Thread Starter
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I got the sensor hole but there are two more holes on top of the actual crossover and I don’t know what they are for? The sensor hole is the big drilled and tapped hole but there are two more little holes in the actual crossover itself.
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post #4 of 14 (permalink) Old 4 Weeks Ago Thread Starter
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As I bought the ford racing Intake from ford it came with nothing. But the intake.
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post #5 of 14 (permalink) Old 4 Weeks Ago Thread Starter
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The two tall ones in the middle.
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post #6 of 14 (permalink) Old 4 Weeks Ago
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It might be handy to mention the model year of your car. For example are we dealing with a 1996-1998 non-PI or a 1999-2004 PI?

Why is this important? Because a 1996-1998 non-PI has two sensor bosses on the coolant crossover. Where as a 1999-2004 has a single coolant sensor boss.

If your car has a PI motor then one would expect it to have only a single ECT sensor boss.

BUT.....If your replacement has two coolant bosses, THEN:
  • The Ford product intake that you have is actually for a non-PI motor.
  • The intake that you have is actually an after market "Dorman" replacement and not a Ford unit.

EDIT: the two tall "things" of the picture posted are not for a coolant sensors but are actually for the alternator support bracket. You can see the location for the 2nd coolant boss that is clearly not drilled out.

Here's what the alternator support bracket looks like. The bracket ties the cross over to the alternator.

https://lmr.com/item/LRS-10153A/99-0...inum-Crossover

https://www.americanmuscle.com/ford-...et-9904gt.html

https://www.ebay.com/itm/1999-2004-F...UAAOSwKPNdILWO
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post #7 of 14 (permalink) Old 4 Weeks Ago Thread Starter
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Well I figured I am the in 4.6 section, but your right it’s for a 4.6 2v pi intake. That really only explains one of the hole? How can plug the other one. Sorry about my lack of word on the “tall things”. So I’m assuming that it will leak if I don’t plug them?
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post #8 of 14 (permalink) Old 4 Weeks Ago Thread Starter
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So your telling me i got the wrong intake? That’s a non pi intake? Your kidding me?
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post #9 of 14 (permalink) Old 4 Weeks Ago Thread Starter
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Seeing this bracket which one has one side drilled out for the mounting points and there being two on there has me really confused.
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post #10 of 14 (permalink) Old 4 Weeks Ago
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Quote:
Originally Posted by Jsmith01 View Post
Seeing this bracket which one has one side drilled out for the mounting points and there being two on there has me really confused.
The two center tall boss in the attached picture is for the alternator support bracket. Please go back to review the updated post #6 with examples of what the alternator support bracket looks like.

Here's an example of why it's important to include all of the details of the car in question. It avoids confusion and help us out here in Internet land to give you the best help we can. Best not to guess.

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post #11 of 14 (permalink) Old 4 Weeks Ago Thread Starter
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I got it bro be more specific! And I will I was just in a confused cluster! Now my question being if I don’t use them holes will it leak?
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post #12 of 14 (permalink) Old 4 Weeks Ago
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Quote:
Originally Posted by Jsmith01 View Post
I got it bro be more specific! And I will I was just in a confused cluster! Now my question being if I donít use them holes will it leak?
No it will not leak if you leave the support bracket off. The tall bosses do NOT go all the way into the crossover.

But the bracket does provide some support for the alternator that will not be present if the bracket is left off.

Just wondering. Didn't the original car have this bracket?

I have replaced several modular intakes. It's a fair amount of work. It seems short sighted to me to cut such a corner on such a big job. Do the job right the first time. Do the job one time!

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Last edited by wmburns; 4 Weeks Ago at 11:27 AM.
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post #13 of 14 (permalink) Old 4 Weeks Ago
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Maybe this will help.




Depending on your year, you may need to also buy the revised alternator bracket.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I believe Ford revised the bracket with all 4 holes. The bracket that LMR has only shows 3 holes.When installed correctly both of the alternator standoffs on the coolant crossover are used (5:46 on the LMR video). I just did a manifold replacement on my mom's '99 GT, though it was with a aftermarket manifold from RockAuto it did not have the correct bracket. I got the alternator bracket from Amazon. All worked really well.
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post #14 of 14 (permalink) Old 4 Weeks Ago
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Sounds like you are talking about the mounting holes for the alternator bracket
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