Exhaust manifold nut

[benny3008]

When i eventually manage to get this nut off of my exhaust manifold, the nut is not going to be in a fit state to use again, where can i get a replacement bolt, do i need to get an identical bolt or can use one of the same size but different style?

[ELVIS68]

Nut or bolt?

[benny3008]

Errr, the ones i have already got out which are the same are studs with sections of thread on and a nut on the top, although i have a feeling the nut might be attached to the stud somehow. :-/ it is definitely a nut on top though because there is a small section of thread above it and below it.

[benny3008]

hope that makes sense.

[ELVIS68]

Easiest way to get them out if WD40 doesn`t work is to heat them up first.

[jomifl]

Remove the nut by the usual method and you can get one the same size almost anywhere, free probably from a scrap yard

[benny3008]

how ill heating help, sorry for all the questions, im just curious because i thought heat would make it expand and therefore be more difficult to get out. :-/ where would i find a replacement stud/nut once i remove it?

[benny3008]

will*

[ELVIS68]

The mechanics next door to my old workshop always used to heat any manifold nuts that wouldn`t budge, I don`t think you can use any old nuts or bolts to replace them, modern nuts and bolts are metric, I think the old ones are imperial or whitworth

[Toureman]

1, You don't use WD40, you use nut release fluid.

2.. If it's a stud don't heat it up, that will make it harder to get out.

3. if it's a nut then heating it up will expand it so it will be looser.

4. Why can't you say what make of vehicle it is so we can help?

[dougielogan]

go to the dealer of your make of car and get a replacement stud and nut, it will only be coppers, if you used a 13mm socket to remove the others it will be 8mm nuts and studs.

[sigma]

If its a bolt, heat up the manifold and block around the bolt. If its a nut buy a nut splitter from Halfords. For a replacement nut go to the main dealer.

[benny3008]

it's a rover 214 if that makes any difference, thanx for all your answers

[benny3008]

I managed to get the bolt of using a 9/16 socket, a hammer and a bit of persuasion, thanx for all your answers. :-)

[RATTER15]

Nut is female and bolt is male

Work it out :-)

[benny3008]

i know the difference, it is just that the bolt/nut i was trying to get out is kind of a stud with a nut on the end which makes it look like a bolt, it's weird, but i know what i mean lol.