Red69

Anyone have any good tips on how to remove a rust hose fitting from an aluminum intake manifold? They have been in there a while and I suspect that previous owner did not want to chance cracking it...


Thanks

Stewart's74

To start, I'd get a set of line wrenches and a can of liquid Wrench.

Aflac

you may try to heat the intake slowy and try not to warp it.

gerry72

Get a propane torch. Heat up the fitting. Get a candle and place it all around the fitting so that the wax runs down into the threaded area. Give it a shot. You can also heat the aluminum fitting boss and try the wax trick or just heat the boss and try to turn it. Aluminum absorbs heat faster than iron and expands faster.

Red69

What are line wrenches?

stpman

It's a box wrench that has a cut out so the wrench will fit over a line. the good ones have 5 points of contact.

Steve :steering:

vetteboy1976kr

:iagree:
It's not worth the risk of cracking the intake by heating the fitting. Soak it in Kroil or PB Blaster for two days, then try. If that doesn't work, do the candle thing. Last chance is the torch on the manifold, but be careful. I think line wrenches are also called flare nut wrenches.

FeedVaal

As a last resort, soak area in CLR. The phosphoric acid will eat the rust but will discolor the other metal also.

noblejr

You can try tightening the fitting first to break the tention, then loosen it.

NHvette

My opinion: If it's rusted into the aluminum manifold that bad, then the
aluminum around the fitting is corroded, too. Even if you get it out, there
may not be much to screw a new one back into.

POR15 until it lets go for good.

GaryS

I am not sure I agree with heating up the fitting since the heat will expand it. I would gently and slowly heat the manifold. I have heard of others having good success with the candle and wax routine. Personally, my favorite is PB Blaster.
Gary

mapman

Is the intake manifold off the car? If so you might take it to a machine shop/engine rebuilder. The shop could remove the fitting and clean up the manifold (dip, etc) - might not cost much.


[Modified by mapman, 2:15 AM 4/9/2004]

R. Bruno

[ Personally, my favorite is PB Blaster.
Gary[/QUOTE]

:iagree: Get some PB Blaster and give it time to work. The stuff is amazing BUT sometimes you have to be patient. Let it soak a couple of days. Then give it a twist and :thumbs:

Red69

Well all... one of the fittings came out... after a little soaking with PB... I used the impact wrench on low and it broke loose. The other fitting in the front... wont budge, so for now, it will stay in there for a few more years... I dont have the guts to really lean into it... That on has the funny slot that is cut accross the front of the fitting...


Thanks for all the advice...