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Old 10-22-2004, 01:37 PM
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Stuck nipple

Well I have a problem. I have a 351M/400 Ford and on the front of the block passenger side there is a nipple in the block for the heater hose. I believe it is threaded in, but I can not get it out.

When I put some PB blaster on it to loosen the oxidation, the fluid goes down in the crevice between the block and the nipple.

I have also put some heat to it, I don't know if I put enough though.

Anybody have any suggestions?

Greg

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Old 10-22-2004, 01:55 PM
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PB Blaster and heat

Your on the right track...Blaster will sometimes take a day or even two to completely loosen the crud so you can loosen the nipple. With the heat you would need to concentrate it to the outside of the nipple and around the nipple where it hits the block and use a hex 6 point box end wrench or socket if it will fit over the nipple. Don't trust a 12 point to grab and not round off the corners!!!


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Old 10-22-2004, 02:22 PM
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That's probably about 1/2" I.D.. As a last resort you could drill it almost to the threads and use an EZ out, could be pretty risky...

Larry
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Old 10-22-2004, 02:25 PM
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That nipple is pressed in.

tom
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Old 10-22-2004, 02:51 PM
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Someone a while back suggested heating the area surrounding the object and then dripping hot wax into the crevice. I tried it a couple times. It worked once...I think.
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Old 10-22-2004, 03:50 PM
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nipple

Doc here

STUCK NIPPLE?? Ouch!!!!!! I just hate when that happens...

Oh, on the manifold....


IF it's threaded and not pressed as Tom said, you might try some penetrating oil, or heat and a Socket and impact gun...

Doc
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Old 10-22-2004, 04:16 PM
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Impact gun should remove it. If that doesn't work the all time best trick is get it hot then crack a can of automotive refrigerant open on it.
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Old 10-22-2004, 06:05 PM
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Quote:
Originally posted by machine shop tom
That nipple is pressed in.

tom
Tom's right, it's pressed in.

You can use a die grinder to grind through the side of the fitting and then use a punch to collapse it when your close to breaking through.
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Old 10-22-2004, 07:36 PM
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A lot of discussion on that nipple

Maybe I should explain a bit further. This is a smooth round nipple, can't use a wrench or hex key. It actually turned a bit today with vise grips.

I am inclined to believe it may be pressed in after reading everybodys reply.

So lets work on that assumption. Also if it is pressed in and I get it out what can I put in the place of it to close off the hole.

DOC it is on the block!!

Thanks for everybodys help

Greg
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Old 10-22-2004, 07:45 PM
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A freeze plug will work if you can find one the right size...
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Old 10-22-2004, 07:47 PM
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If it is pressed in and you get it to turn with vice grips,grab a small pipe wrench to try and turn it with.You will get better leverage,unless it is in tight quaters.You can measure the i.d. of the hole,or take the pipe to a machine shop and get them to match it with the correct size freeze plug.
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Old 10-23-2004, 01:54 AM
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Ford sells the proper replacement press in nipple. You will likely need to freeze it to tap it in, it's a snug fit.
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Old 10-23-2004, 02:17 AM
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well what you need to do is twist the nipple
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Old 10-23-2004, 02:56 AM
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nipple

Doc here

Maybe a Large (1/2 or so) "Grip type" Easy out down the center of the Nipple, with a Socket drive to twist it while you pull out on the nipple with vise grips??

If you have the room..

Doc
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Old 10-23-2004, 07:41 AM
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My query is, why take it out? If they are in good shape, we just leave them in.

tom
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