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Engine Water hoses that feed throttle body

  • Thread starter Thread starter Mcmahst
  • Start date Start date Apr 8, 2025

Mcmahst

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#1
  • Apr 8, 2025
  • #1
I’ve got an 87 TBird 5.0 in my 73 Mustang and I want to replace the two hoses that feed hot water to the throttle body. They seem like a thicker wall than typical hoses and I was wondering if they are unique for this application, over stock stuff. Thanks.
 

Rdub6

So while I wait to figure out my rear end issues
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#2
  • Apr 8, 2025
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https://lmr.com/item/LRS-9424B-CLNT/mustang-egr-coolant-line-kit-86-93?utm_source=google&utm_medium=cpc&adpos=&scid=scplp&sc_intid=&gad_source=1&gbraid=0AAAAAD62FUzT8RfQkNKhMxGo_6KdKlAqE&gclid=EAIaIQobChMIq4yPk7TJjAMVsEf_AR3zeDetEAQYAiABEgJ30fD_BwE
 
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evintho

20+ Year Stangneter
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Apr 8, 2025
#3
  • Apr 8, 2025
  • #3
Before you spend over $30 (w/tax and shipping) at LMR, just go to your local NAPA and see if they have any 1/4" heater hose sold by the foot, in the back. Probably cost you $5 or $6 and you can have it today vs. waiting a week and paying $30+. Just my $.02.
 
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AeroCoupe

lube between the nut and the face. I know my lubes
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#4
  • Apr 8, 2025
  • #4
Or better yet just remove them. I haven’t had them on my car since I swapped it from a 4 cylinder to a V8 25 years ago.
 

Mcmahst

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#5
  • Apr 9, 2025
  • #5
I’ll try the NAPA route first. Never heard of 1/4” heater hose, but there’s always a first.
 

Mcmahst

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#6
  • Apr 9, 2025
  • #6


I stand corrected.
 
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General karthief

wonder how much it would cost to ship you a pair
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#7
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I believe the coolant running through the plate between the TB and the upper intake is to cool the in coming exhaust gas from the EGR, no EGR no need for the hoses
 
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Noobz347

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General karthief said:
I believe the coolant running through the plate between the TB and the upper intake is to cool the in coming exhaust gas from the EGR, no EGR no need for the hoses
Click to expand...

There are many theories but nobody knows for sure, "Why the water, Ford?".

Some say, it ties in with the dude that stalks teen campers and can only be identified by a hook that he wears for a hand.
 

General karthief

wonder how much it would cost to ship you a pair
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Noobz347 said:
There are many theories but nobody knows for sure, "Why the water, Ford?".

Some say, it ties in with the dude that stalks teen campers and can only be identified by a hook that he wears for a hand.
Click to expand...
Read that IIRC, years ago, makes sence......the 'stalking teen campers' thing
 

Mcmahst

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#10
  • Apr 9, 2025
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That theory is interesting. Just wondering, why are those fittings/lines missing from the Corba intakes? I’m starting to wonder if I should just cap the water ports and eliminate the lines? While I don’t have a Corba level motor, just a plain TBird boat anchor, it would help to cleanup the overwhelming clutter of the engine bay vs a simple carb engine.
 

Noobz347

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Mcmahst said:
I’m starting to wonder if I should just cap the water ports and eliminate the lines?
Click to expand...
This is what most folks do.
 

AeroCoupe

lube between the nut and the face. I know my lubes
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#12
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Cobra uppers do not require the EGR spacer coolant lines nor do they have provisions for them. The one barbed nipple on the front of the upper by the throttle body is vacuum and goes to the charcoal canister solenoid valve.
 

Mcmahst

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#13
  • Apr 9, 2025
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I just think the existence of Cobra manifolds tends to indicate the water is not for cooling of the exhaust heat. BTW, are those water inlets from the pipe and manifold, 1/2” NPT. I wanna get two brass plugs and live the dream.
 

limp

wrap a little cheese around it and its a done
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#14
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Equated to a Carb intake, the warm water heats up the intake during the warm up phase of start up...???
 
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Noobz347

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limp said:
Equated to a Carb intake, the warm water heats up the intake during the warm up phase of start up...???
Click to expand...

That is also one of the possible explanations.

Thing is: Water and coolant during startup can be below freezing.

Still, the theory exists that it's something like a "heat riser" on OEM carb'd cars.
 
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AeroCoupe

lube between the nut and the face. I know my lubes
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#16
  • Apr 10, 2025
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Well this one has been beat like a dead horse years ago so here you go:

Thread 'Bypassing the throttle body coolant lines?'

Dec 30, 2005
I've heard of this being done on F-bodys and other cars but curiously I have never seen an article on doing this to 5.0s. Has anyone done this? Is it even possible on our cars?
  • warpd
  • Replies: 36
  • Forum: Fox 5.0 Mustang Tech
 

limp

wrap a little cheese around it and its a done
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#17
  • Apr 10, 2025
  • #17
Noobz347 said:
That is also one of the possible explanations.

Thing is: Water and coolant during startup can be below freezing.

Still, the theory exists that it's something like a "heat riser" on OEM carb'd cars.
Click to expand...
Yes, but it warms up fairly fast.... And maybe not so much for start up but for better driving characteristics as the car gets to full operation temp...
I would guess that sucking in some very cold air would kee;p the entire air intake area cold for quite a while and this would be a fast way to generate some warmth to it.... Just a guess here.....
 

Mcmahst

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#18
  • Apr 10, 2025
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I’m banking on wester Az and So Cal as not having anything but Optimum tempatures to drive my play thing.
 
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Noobz347

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#19
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Mcmahst said:
I’m banking on wester Az and So Cal as not having anything but Optimum tempatures to drive my play thing.
Click to expand...

Mine went away with the Kenne Bell and 80mm Accufab.

Have not missed it, even a tickle.
 

Mcmahst

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#20
  • Apr 11, 2025
  • #20
So, does anyone know the NPT of those feed nipples?
 
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