Heater core restrictor - location placement

[85stanggt]

Almost done changing my intake gaskets and decided to replace the heater hose from the intake and check to make sure the restrictor was in there. To my surprise, no restrictor! So I bought one from Ford. The plastic one with the rubber doughnut for restriction. Part number XR3Z18599AA.

Scoured the net to find out install location and got various answers. I know the restrictor has to go in the inlet hose (one from the intake). But which end? Put it right next to the core or right at the intake? Putting it at the core would make the rubber hose absorb all that pressure which could lead to it popping?

[qikgts]

http://vb.foureyedpride.com/showthre...ore-Restrictor

The restrictor should go in the intake manifold end of the hose, but only because that location will
reduce noise transmission into the passenger compartment. Functionally, it makes no difference.

[Ourobos]

Next to the heater core in the S shaped hose..

[Haystack]

I've pulled them out of the hose on the firewall side on every car I've seen them in.

If it didn't have one, I just use a broken 1/4 drive socket.

[Walking-Tall]

Pressure contained within the intake manifold is better than within the heater hose...

Here's mine, homemade, a simple plumbing copper end cap with a 1/4" hole drilled in it, tapped into the intake elbow:

[Dave9052]

Pressure contained within the intake manifold is better than within the heater hose...

Here's mine, homemade, a simple plumbing copper end cap with a 1/4" hole drilled in it, tapped into the intake elbow:

Followed Walking-Tall's advice he gave me in past thread and it fits perfect, tapped right in. Cheap and simple

[KevinK]

I belive the Ford upgrade part gets inserted into the heater core inlet. Not sure if all their versions are the same size OD.

Others: I noticed on my 02 F150; that the restrictor was inserted into the heater hose just a few inches after leaving the engine. They used a crimp style clamp down stream to keep it from moving. Since it was plastic, I salvaged it to reuse on the Mustang.

[85stanggt]

Thank all for the input. I have the plastic one already, so I'll stick it in the intake end of the hose with a hose clamp to keep it from moving. The plumbing end cap is a great idea that I'd do if I didn't already buy the plastic piece.

[Mgino757]

Mine sits in the heater core inlet, which is attached to the intake manifold. I'd rather rupture a hose than a heater core any day.

[RazorbackGT]

Followed Walking-Tall's advice he gave me in past thread and it fits perfect, tapped right in. Cheap and simple

I was interested in doing this with the copper end cap. Does the end cap have threads or how does it attach to the elbow and what size of fitting is it, 1/2?

[Dave9052]

Yes 1/2" copper end cap. No threads it taps in, it is the perfect size. I tapped it in further than pic. so it was flush. I think it was 29 cents. Can't beat that

[RazorbackGT]

Yes 1/2" copper end cap. No threads it taps in, it is the perfect size. I tapped it in further than pic. so it was flush. I think it was 29 cents. Can't beat that

Great info, will take care of this soon, much appreciated!

[85stanggt]

Installed the restrictor at the intake side of the heater core inlet hose. Installed the new hose and finished up the intake gaskets. Aaaand now my heater core is leaking. I guess getting the old stuck-on hose off loosened the weld enough on the pipe to have it start leaking. There are times when I really hate this car.

[xctasy]

Hang in there buddy. You've gotten the 4180C beaten, so its just the heater core. Find some support from the guys who have done it here, sart a post, and get it replaced.

Don't have a melt down moment, because its what happens when your car is 32 years old, but easy to fix.

Once you've done the heater core, then focus on the Hot Idle Compensator, there is a tunning memo on it for all carb Fords with A/C and power steering dating back to 1962.

The best thing about FEP is the depth of knowledge you can draw on to fix things without a boat load of money. Information is Power.

[85stanggt]

Thanks for the moral support. The worst part is I had the dash out about 6 months ago to fix the shell that was cracking. Thought about just replacing the core at that time, but it wasn't leaking and had lasted for so long, I didn't want to make things worse. Of course, dumb dumb dumb dumb move.

What is this tuning memo for the hot idle compensator? Can you PM it to me?

[Walking-Tall]

Sorry about your core. FYI, specific instruction and torque spec for 3.8 WP bolts... I would like to add that when reinstalling or replacing bolts where their length will be residing within through holes, such as these do, a greasing along their non-threaded length never hurts...


(image from Haynes manual)

[xctasy]

Thanks for the moral support. The worst part is I had the dash out about 6 months ago to fix the shell that was cracking. Thought about just replacing the core at that time, but it wasn't leaking and had lasted for so long, I didn't want to make things worse. Of course, dumb dumb dumb dumb move.

What is this tuning memo for the hot idle compensator? Can you PM it to me?

http://vb.foureyedpride.com/showthre...pensator-Valve

The device was mae by Rochestor, Carter, and for Ford; each had the same rough method of setting. It was a great tool for the cranky behaviour of a V8 engine with too much under hood heat causing fuel vaporisation related carburation problems.

[srad2drag]

Late model restoration sells the restrictors pretty cheap..

[85stanggt]

http://vb.foureyedpride.com/showthre...pensator-Valve

The device was mae by Rochestor, Carter, and for Ford; each had the same rough method of setting. It was a great tool for the cranky behaviour of a V8 engine with too much under hood heat causing fuel vaporisation related carburation problems.

Thanks just posted to it. Want to know at what temperature it is supposed to open. I remember at one point it was staying open on my car and I tried to adjust it. Don't know if I screwed it up.

Late model restoration sells the restrictors pretty cheap..

Got the restrictor from Ford. It's in there but now the core is leaking anyway.