Progress Thread Snow - 93 GT Vert. Prepping for sale

JAA · Jun 19, 2023

AeroCoupe said:
Do a base idle reset.

TY

Base Idle Reset

I'd like to post this for all the newer mustang owners and the others like me that never took the base idle reset seriously. I've had multiple engines and various setups but never once done the base idle reset. I just replaced the lifters in my car after having one collapse. I thought the...

stangnet.com

JAA · Jun 19, 2023

Throttle stop was adjusted a good amount to bring down from ~1200 to ~600. TPS voltage set from .65 to .96. Currently waiting the 20 min of battery disconnected.

JAA · Jun 19, 2023

Idling around 700-800 now. I will test drive shortly.

It sure 'sounds' like I have a vacuum leak. I would guess at the upper intake gasket/plenum whatever its called. Just sounds like it when I put my ear there.

Anyone have a smoke machine they like?

AeroCoupe · Jun 19, 2023

Shoot some brake cleaner around the gasket seam and if the rpm's bump up that will tell you if and where the leak is.

JAA · Jun 20, 2023

So I found another un-used harness. It is on the rear of the fuel line harness. It is a 2-pin connector with colors Red, Black/Blue. Its right next to EGR Position Sensor and the Throttle Position. Any ideas what it could be?

Here is a link to the diagram: https://stangnet.com/mustang-forums/threads/lower-intake-manifold-sensors.734820/#post-7301523

Pic

JAA · Jun 20, 2023

My temp sending unit keeps leaking (front of lower intake by thermostat housing somewhat under distributor). I had been using thread sealant. Is that not good enough? Should I be using plumbers tape instead? Any other tricks?

JAA · Jun 21, 2023

JAA said:
My temp sending unit keeps leaking (front of lower intake by thermostat housing somewhat under distributor). I had been using thread sealant. Is that not good enough? Should I be using plumbers tape instead? Any other tricks?

5 revolutions of plumbers tape and a light coating of sealant. Still went in smooth. It almost feels like retapping this made it too clean, lol.

85GTStangGuy · Jun 21, 2023

JAA said:
It almost feels like retapping this made it too clean, lol.

What did you chase the threads with?

Existing threads should never be chased with cutting taps or dies. The threads can actually be made too big (in the case of female threads) or too small (male threads). Always use chase taps and dies, like these (or similar)....

Amazon product ASIN B00DTEFSWY
I got a set of those and recommend them.

Taken from the AutoServiceProfessional website:
"Chaser taps are specifically designed to re-form and clean existing threads. The spirals on a chaser tap are designed in such a way to follow an existing helical thread spiral path without removing material. While you may be able to accomplish the task by using a standard cutting tap, you run the risk of weakening the existing threads."

JAA · Jun 21, 2023

85GTStangGuy said:
What did you chase the threads with?

Existing threads should never be chased with cutting taps or dies. The threads can actually be made too big (in the case of female threads) or too small (male threads). Always use chase taps and dies, like these (or similar)....

Amazon product ASIN B00DTEFSWY
I got a set of those and recommend them.

Taken from the AutoServiceProfessional website:
"Chaser taps are specifically designed to re-form and clean existing threads. The spirals on a chaser tap are designed in such a way to follow an existing helical thread spiral path without removing material. While you may be able to accomplish the task by using a standard cutting tap, you run the risk of weakening the existing threads."

Thanks for this.

I do have that set. The issue I am having is that the lower intake had either damage to the threads or some sort of power-coat-something which did not allow me to thread down the heater tube nor this 3/8 NPT. To be specific, this isnt gunk or sealant, tape, etc, but bad threading.

Back earlier in the thread I was discussing the heater tube issue as the chaser kit did not have the proper size. I was recommended to get a tap for it to clean up the threads. I went with the below one. I used that kit for this instance and that is how we got to where we are at today. When I cleaned the threads there was definitely metal particulate which came up. I figured this was a good thing as I was cleaning up whatever was in there that was blocking the 3/8 from threading all the way down.

So, if I retapped my threads 'too well', what is my next step here?

Thank you

Amazon product ASIN B07X2VFBZZ

85GTStangGuy · Jun 22, 2023

JAA said:
So, if I retapped my threads 'too well', what is my next step here?

Thread sealant (I like Loctite 565).... but it seems as if you've already gone down that route. So I'm not sure what your next step should be.

I definitely prefer thread sealant over thread tape. Loctite (Henkel) brought a demonstration truck to the company I work for and put on a really good show for the engineering dept, and ever since then I've been sold on their 565 sealant. Not only is it a great sealant, but it's lubricity eases part assembly and also helps prevent thread galling.

JAA · Jun 22, 2023

85GTStangGuy said:
Thread sealant (I like Loctite 565).... but it seems as if you've already gone down that route. So I'm not sure what your next step should be.

I definitely prefer thread sealant over thread tape. Loctite (Henkel) brought a demonstration truck to the company I work for and put on a really good show for the engineering dept, and ever since then I've been sold on their 565 sealant. Not only is it a great sealant, but it's lubricity eases part assembly and also helps prevent thread galling.

Thank you

Funny enough I liberally used the permatex sealant on the heater tube. I swear it’s no more than 3 to 4 threads down. Hell if it’s leaking a smidge.

I watched a plumbing video about the tape/sealant application. I’ll be staring the car in a couple hours, we will see the outcome.

I looked a bit at the heli coil. Certainly an option, but not sure about it for pressurized coolant.

General karthief · Jun 22, 2023

It could be drilled, tapped and a brass bushing/reducer used?

JAA · Jun 22, 2023

General karthief said:
It could be drilled, tapped and a brass bushing/reducer used?

That is definitely an option

Knock on wood started the car for a few minutes this morning and all seemed well. In preparation i dropped my pants some in the back so my car knew I reppin serious plumber mojo. Im hoping it got the message.

General karthief · Jun 22, 2023

It may take a couple heat cycles to show up,
or not

85GTStangGuy · Jun 22, 2023

General karthief said:
It may take a couple heat cycles to show up,

The leak or the serious plumber mojo?

JAA · Jun 22, 2023

Don't know whey I didn't try this earlier, but I hooked up a vacuum gauge to the tree (the capped B/R port). I started the car and got a 19 reading (see below). I didn't see any flutter away from 19. When I would hit the gas it would go down and them come back up, even over 19 and then right back to 19 and stay solid. Is this expected?

JAA · Jun 22, 2023

PS - I saw a minor leak coming from my plumbers special on the temperature sending unit. WTF - is the right play here just to not start the car so I dont have any problems?

Ill take it for a ride today to see how bad it gets. I also ordered some of the loctite 565.

In all seriousness, Im wondering if Im not letting the sealant cure enough. It should be done in like 24 hours, but Im wondering if it would be helpful to give it more time. Id like to stop by the Friday afternoon car show again. As long as the leak is minimal ill prolly do that Friday night and then redo it with the 565 sealant liberally over the weekend and give it a number of days to settle.

If that doesn't work all I got is to tap a larger port and use a reducer, though that's a bit of scary territory.

JAA · Jun 22, 2023

This is the sealant Im using, pretty standard. Though I dont see any psi ratings on it: https://www.permatex.com/products/t...lants/permatex-thread-sealant-with-ptfe-4-oz/

The loctite 565 states this:

Product Description
Testing and approvals are CSA International, UL Listed for US, ULC Listed for Canada, NSF/ANSI 61, CFIA, AGA. Ideal for pipe, thread. Acrylic Ester chemical compound. Paste or Gel physical form. 10000.00 psi maximum pressure. Chemical resistance. 1.1 specific gravity. 300000.0 cP viscosity.

There is a Permatex high temp/psi here: https://www.permatex.com/products/t...rmatex-high-temperature-thread-sealant-50-ml/

SUGGESTED APPLICATIONS
Head bolts into through holes, oil PSI sending units and sensors, oil and coolant lines, fuel fittings, rear axle fill plug, brake and power steering fittings

AeroCoupe · Jun 22, 2023

19 psi of vacuum is right in the ball park with a stock cam.

JAA · Jun 22, 2023

Loctite 592 (im still going to go with the 565) Q/A from Amazon:

I have a brass engine coolant temperature gauge leaking. Do i have to drain the coolant before using and let dry completely?

Answer:
The fitting must be clean and dry prior to applying the 592, and it should be allowed to cure for at least 24 hours (preferably 72) before adding the coolant back into the system. Any other questions, please reach out to our technical team at 1-800-LOCTITE

By Elizabeth Casatelli MANUFACTURER on October 15, 2021
For best results, clean and dry the parts being mated before applying 592. Unless the gauge is on the bottom of the engine, you may not need to completely drain the fluid.

By Eugene on October 15, 2021
No! Remove gauge and clean gauge and engine threads. Wipe clean and dry. Put sealant on gauge threads one or two threads from end of threads.
Make sure rest of threads are evenly coated up to gauge back. Screw in gauge to desired position. Immediately remove all excess sealant. Let set for a few minutes. The longer it sets the harder it gets. It will be hard in a day or so

By william 111 on October 15, 2021

Progress Thread Snow - 93 GT Vert. Prepping for sale

JAA

Base Idle Reset

JAA

JAA

AeroCoupe

lube between the nut and the face. I know my lubes

JAA

JAA

JAA

85GTStangGuy

JAA

85GTStangGuy

JAA

General karthief

wonder how much it would cost to ship you a pair

JAA

General karthief

wonder how much it would cost to ship you a pair

85GTStangGuy

JAA

JAA

JAA

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AeroCoupe

lube between the nut and the face. I know my lubes

JAA

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Progress Thread Snow - 93 GT Vert. Prepping for sale

lube between the nut and the face. I know my lubes

wonder how much it would cost to ship you a pair

wonder how much it would cost to ship you a pair

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lube between the nut and the face. I know my lubes

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