Manifold studs

Anonymous-0 · Aug 14, 2012

When removing manifold studs (coming out with the nuts) is there any benefit to have the engine hot?

mite-help · Aug 14, 2012

don't know your exact situation, but could be helpful--i would think a good shot of penetrate oil while hot--work slowly both directions--let cool-repeat

Uncle Ernie · Aug 14, 2012

I have sprayed them with penetrant when hot and that seems to help but it always seemd like they come out better cold.
I have heard of applying stick wax to them when hot so the melted wax creeps down the threads. Sounds like a reasonable idea to try at least.

Anonymous-0 · Aug 14, 2012

I'm changing the manifold on a Wis V-4. The parts engine bolts/studs aren't rusted too bad and I got one nut off but the stud came with it. Soaked 'em with Kroil.

The running engine's nuts are rusted real bad. I can get new studs if they come out. I think I can get the impact wrench on the nuts with a u-joint and extension or possibly a nut splitter.

Greg1959 · Aug 14, 2012

Try two nuts on one stud. Tighten them against each other. That may help you get the rusted studs out.

Anonymous-0 · Aug 14, 2012

You're more likely to snap them off with an impact wrench. A normal wrench or a socket lets you feel how how much torque you're applying. You could try welding the nuts to the studs first. The heat from welding often will loosen the studs/broken bolts.

rustyfarmall · Aug 14, 2012

(quoted from post at 10:01:21 08/14/12) When removing manifold studs (coming out with the nuts) is there any benefit to have the engine hot?

More often than not the studs coming out WITH the nut is a blessing in disguise. It is a whole bunch better than the stud breaking or twisting off.

Just grab that stud with the nut still on it, clamp it in your bench vise, heat it up cherry red, let it cool down, and more than likely the nut will be loose and can be removed from the stud. Then you can reassemble the way it is supposed to be.

heavyhaulertoo · Aug 14, 2012

I would heat it up and use the small impact on low, just shake it.

Anonymous-0 · Aug 15, 2012

No one solution will necessarily work for all the studs on the same motor. I kroil everything, then I have a favorite 1/4 drive impact gun, which I set to tighten each nut, just a little. When you perceive that the nut has moved tighter, hit the switch, and reverse the impact. If it slows down, hit the switch, and reverse, again. Back and forth, till either the nut comes off, or the stud backs out. No matter whatcha do, you break one off flush, every once in a while. If I don't have Kroil handy, beeswax, on a propane heated nut, and stud, seems to do the same trick!

Manifold studs

Anonymous-0

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mite-help

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Uncle Ernie

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Anonymous-0

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Greg1959

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Anonymous-0

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rustyfarmall

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heavyhaulertoo

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Anonymous-0

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