Manifold Hose Nipple removal

[COPO 70 RS/Z28]

Does anyone have any tips on trying to remove a hose nipple from an aluminum manifold.. Or is it just hold you breath and twist!!!! http://www.yenko.net/ubbthreads/images/graemlins/eek.gif

[SuperNovaSS]

I would heat the aluminum up well before removal. It will expand and make removal easier and less damaging.


Jason

[COPO 70 RS/Z28]

Is there any danger of melting with http://www.yenko.net/ubbthreads/images/graemlins/eek.gifpropane

[SuperNovaSS]

I use Mapp gas and have never had a problem. I think Mapp Gas is hotter.



Jason

[COPO 70 RS/Z28]

Ill give it a try!!!!!!!!!!!!!!!!&^%&%**%^$

http://www.yenko.net/ubbthreads/images/graemlins/eek.gif http://www.yenko.net/ubbthreads/images/graemlins/eek.gif

[John Brown]

FWIW, sometimes tightening a pipe fitting first will expand the hole making loosening it easier. http://www.yenko.net/ubbthreads/images/graemlins/dunno.gif

[VintageMusclecar]

You need some canning parafin (wax). If you don't have any handy, you should be able to find it at just about any grocery store.

Carefully heat the fitting with MAP gas or propane, just don't get carried away.

Once it's hot, apply some canning parafin to the base of the fitting where it threads into the manifold. The heat will cause the parafin to melt and wick itself down into the threads where it will act as a lubricant to ease dis-assembly. Might take a couple of trys, but it works.

Eric

[COPO 70 RS/Z28]

Ill Give it a try, It looks like who ever installed the Nipple (long long ago ) Many have used some form of brown colored compound.

Maybe form a gasket ???????????????

http://www.yenko.net/ubbthreads/images/graemlins/eek.gif

[VintageMusclecar]

Ooooooo.....that's nasty stuff to work with if it's the one that sets up hard.

Good luck!

Eric

[COPO 70 RS/Z28]

Do ya think the heat would break it down???????????
http://www.yenko.net/ubbthreads/images/graemlins/shocked.gif http://www.yenko.net/ubbthreads/images/graemlins/eek.gif http://www.yenko.net/ubbthreads/images/graemlins/shocked.gif http://www.yenko.net/ubbthreads/images/graemlins/eek.gif

[SuperNovaSS]

The heat should. In fact, it should be easier to remove as the compound most likely slowed the corrosion between the dissimilar metals. Eric, the wax trick sounds good. I've never used that trick but will now.



Jason


Jason

[Charley Lillard]

Crayola crayon also if you have kids

[169indy]

If you have a box of Crayons in your home and If you have Kid(s) give it a few days and you will have twice as many crayons. http://www.yenko.net/ubbthreads/images/graemlins/naughty.gif
Great tip.

KROIL, found at most auto parts stores. Works on rusty submarines good enough for a Rust Chevy.....

Jim

[L78steve]

None of the above has worked for me.What happens if there is corrosion is the aluminum transfers to the steel and when you unscrew the fitting it tears out the threads.The only thing that works is to drill a hole if its a plug.Then take a jigsaw and slowly and carefully cut from the drilled hole towards the thread stopping short of the alum.Then with a Vice Grip collapse the plug or fitting then unscrew.

[Eddie M.]

Same for mine I sent the manifold to Jerry McNish after I ended up cracking it along with the threads stripping out he did a great job fixing it http://www.yenko.net/ubbthreads/images/graemlins/biggthumpup.gif
Can't even tell now