Removal of rusted hose nipples?

[Joe L.]

Re: Removal of rusted hose nipples?

Thanks Joe. I'm assuming THIS IS THE PLACE?

Ed

Ed-------


Yup, that's it. And I see they still show the "Made in USA" logo so that answers that question.

[Edward B.]

Re: Removal of rusted hose nipples?

Ok, I'll get them a try. Thanks again.

Ed

[Jim S.]

Re: Removal of rusted hose nipples?

Ed-------

If you use the stainless steel nipples, when this job needs to be done again, I guarantee it won't be your problem. It'll be a problem for some guy or gal who hasn't even been born yet. Actually, even if you used stock-type nipples you'd probably never have to do it again but I'm an aficionado of overkill. Plus, I HATE RUST and I LOVE stainless steel.





I see absolutely no problem with stainless on aluminum. Certainly, no more than mild steel on aluminum. However, you can still use anti-sieze on the threads.

The nipples I've used are from an outfit called Performance Stainless. Beautiful pieces. The ones I bought and used were made in the USA. I don't know if they still are, though.

Joe and Ed ,

First off I see we need to all stop posting and writing at the exact same time ! LOL

Joe,

I never knew that stainless was a better option, so I didn't go that way either. I did cheat and use teflon tape , which I hoped would stop the chemical reaction from happening again , and also as an assist to help the seal , that I felt might be weaker after all the cutting and twisting I did to the threads on the manifold . Maybe I am wrong , but hopefully, as you say , I will never have to find out !

By the way , in the ultimate irony , I wound up sending my intake to Jerry a little while after all that work because I decided I wanted it to look great , not just good .


Jim

[William G.]

Re: Removal of rusted hose nipples?

I understand and it may be the process I will have to undertake for one fitting. I was able to get the fitting that goes to the bypass hose out of the manifold. It actually came out without too much resistance. However, the one on the other side, which attaches a heater hose, has not budged yet. While I am pretty sure I am the second owner of the car, a 67 AC roadster, which I purchased in 1975, It does appear someone previously messed with the fitting, as the corners are slightly rounded off. For sure, that complicates the issue of getting it out. My fear, being that the fitting is 48 years old and the surface area where the hose is clamped to it is getting pretty thin. If it were to break off while I am out with the car, it would be extremely difficult to repair to get the car home. It is a survivor car which is still being driven.
My reason for removing the fittings now is I'm in the process of putting the original 327 back into the car. Seemed like a good time to tackle replacing the fittings.
As for keeping the car 100% original, darn near impossible these days unless you have an unlimited amount of cash available. Therefore, if you have a source for stainless fittings, I would sure like to know where to get a couple myself. Do you have that information to share?

Bill

[Jim S.]

Re: Removal of rusted hose nipples?

William,

Go back to Edwards post and click on the " This is the place " in blue writing .

Jim

[Joe L.]

Re: Removal of rusted hose nipples?

Joe and Ed ,

First off I see we need to all stop posting and writing at the exact same time ! LOL

Joe,

I never knew that stainless was a better option, so I didn't go that way either. I did cheat and use teflon tape , which I hoped would stop the chemical reaction from happening again , and also as an assist to help the seal , that I felt might be weaker after all the cutting and twisting I did to the threads on the manifold . Maybe I am wrong , but hopefully, as you say , I will never have to find out !

By the way , in the ultimate irony , I wound up sending my intake to Jerry a little while after all that work because I decided I wanted it to look great , not just good .


Jim

Jim------


Well, you did Jerry a favor because he didn't want to do it, anyway.

[Joe L.]

Re: Removal of rusted hose nipples?

Ok, I'll get them a try. Thanks again.

Ed

Ed------


If you get the unpolished ones, they'll appear more like original but the polished ones sure are pretty.

I wish they made the "long hex" waterpump heater hose nipple but I don't think they do.

[Domenic T.]

Re: Removal of rusted hose nipples?

As Joe said " indifference in metals". They actually chemically weld. I did get one out using the heat method but the threads were damaged by the corrosion. The heat method I used varies a bit from the one posted but works great on cast iron also.
Not saying that this will work but I heated the fitting red hot then put a wax candle around the base of the fitting. The wax wicked between enough to allow me to get one out. The wax WILL catch fire, so prepare for that. Prior to that, years ago I broke the aluminum manifold and had a welding job on my hands. In a severe case like that and after reshaping the manifold, the texture ( casting look) can be duplicated by turning a piece of rough crocus cloth over with the grit side on the aluminum and tap the back of the cloth with a hammer to texture the metal.
I did that on one of my Brit motorcycle cases that I welded and filed to shape. After tapping the cloth the hammer it was not detectable.

Dom

[Larry E.]

Re: Removal of rusted hose nipples?

AACA Grand National Moline IL-2013 007.jpg

Larry------


That's the solution that I've used. However, I must say that Jerry was not too happy about my request that he remove the fittings. I got the impression it is a service operation he'd rather not perform.

Joe: Alway like your response. Yes you are correct about J/M sometimes not too happy on the request. But at the end he always comes through.
Enclosed is picture of the manifold on my 69 Z28--Drop dead gorgeous I might add. Larry P.S He also did my Exhaust Manifolds in the picture.

[William G.]

Re: Removal of rusted hose nipples?

Hi Dominic,

What I am going to try first is to heat the aluminum around the fitting then squirt both Blaster Penetrating oil and WD-40. Hoping over the next few days, it will seep in and loosen the threads enough to get the fitting out. I'm thinking there may be some rust build up on the back side of the fitting inside the manifold. I may buy a liter of Coca Cola. Plug up the water jacket and pour the Coke inside, letting it sit for a couple of days. The small amount of Phosphoric acid in the Coke may loosen the rust as well. I also have much, much, stronger Phosphoric Acid, which I use for de-rusting bolts and small steel brackets, but that would likely be too strong for the aluminum.
A buddy of mine, who used to restore Model T's used to heat the outside metal and then put ice on the inside meta of two frozen parts. That might also be a possibility,
As a last resort, I may have to do a surgical cutting of the fitting and then try to bump what is left of the fitting out of the threads. This is a last resort though and one that I will try to avoid at all cost.
The heating and cooing along with the penetrating fluid is what I'm doing now and it just means having the patience to let the stuff do it's work.

Thanks,

Bill

[Richard M.]

Re: Removal of rusted hose nipples?

On both my original intakes (68 Camaro 3933163 and 69 Corvette 3947801), I sprayed them every day for a week with PB Blaster. No good. I then sprayed them every day for a week with Freeze Off. No good. I then used a torch to heat them up, cool them down, heat them up, etc... No good. I then tried heating them up and taping on them with a hammer. No good. As Joe said, nothing worked.

I ended up cutting them off close to the intake and then I cut four slots inside (at 12:00, 3:00, 6:00 and 9:00) in what was left, making sure NOT to cut into the manifold threads themselves and took a flat blade screw driver and a hammer and was able to chip the four pieces out. Most of the threads DID have small cuts in them from the hacksaw blade, but not deep enough to cause any leaks when I put the new ones in. And this time I used some anti seize on the threads so hopefully next time (if there IS a next time) I won't have to go through this again!

And by the way, you're right. Jerry HATES to do this and I don't blame him!

Ed

Edward.....Exactly the method I used.

Below are photos or a FI inlet manifold that had a cast iron plug in the heater hose fitting and a pipe fitting on top where the temp sender should have been. I was planning to send everything to Fred Hudson for refinishing, and I promised him I would remove the fittings before he got the pieces, if HE would remove the oil fill tube for me.

I knew I was in for a treat. I LOVE CRC Freeze-off, but it didn't help due to the heavy electrolysis corrosion on the front fitting. It did help on the top fitting though, but frightening when it "broke" free.

PA150008.jpg

About a hour or two later I got the forward plug removed. In the process of Freeze-Off and wrenching, the end of the plug broke off. I had to grind it flat, then step drilled to apx 3/16" or so of it left on it's circumference. I then used a hacksaw blade, carefully slicing in quadrants to just above the aluminum threads. Then with a fine pointed drift to break the pieces away from the threads. i then re-tapped the NPT threads a tad more to clean and "re-energize" them.

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Saved....
P1020059.jpg

Fred got the manifold and all of the other pieces and came out great.

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[Page C.]

Re: Removal of rusted hose nipples?

I have used the method that Jim Schwering in post #13 many times. Most of the other methods were a waste of time. Cut the nipple off leaving about 1/4 inch extending past the manifold. Take a hack saw blade and cut almost thru the nipple from the inside in 3 or 4 places. Take a punch and collapse the nipple and you sometimes turn them out by hand. This is about a 30 minute job with no damage to the intake manifold.

[Domenic T.]

Re: Removal of rusted hose nipples?

Page,
Had I tried that, I might not have broken & had to weld. Great TDB board.

Dom

[Paul S.]

Re: Removal of rusted hose nipples?

if you want a manifold done ,macneish does excellent work , but if he is still as busy as he was don't expect it back for a couple months or more . I sent him 2 manifolds in the last year ( at different times) and each one took over 60 days , but they were worth it.

[Domenic T.]

Re: Removal of rusted hose nipples?

Bill,
Although I did it opposite as we know that the heat will make the hole larger, the danger of heating a cast Iron block made me take a look at heating the fitting up and making it larger. That can also be dangerous but I think making the fitting larger also works. When the fitting cools down it wicked the wax.
What I have found was not rust but the white corrosion between the fitting and the aluminum. As Gary mentioned in his post, the threads will need a clean up and NPT gets deeper when that happens so if you need a lot of thread clean up, then I would test the depth of the fitting as you are doing so.

Dom