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MG MGA - Removing nuts from the manifold bolts

Hello LBC folks

I am trying to replace the exhaust system on my 1956 MGA but the old pipe doesn't like my intentions.....

Can you please give me some good hints how I can loosen the three nuts from the bolts that hold the pipe-flange to the manifold.

Soaking the bolts/nuts with loosening spray didn't help.

Should I try to loosen the nuts with a pneumatic impact tool?

Your thoughts are deeply appreciated.

Hansueli

Hansueli Ryser

50/50 ATF (automatic transmission fluid) and acetone. Best penetrating oil ever and let soak overnight. Try again. If no sucess soak again and try again next day. If they still won't budge.... heat.
... CR
C.R. Tyrell

Heat. This isn't the time to consider treating this like a Swiss watch. Heat makes the nut larger and breaks the bond.

......
MAndrus

Thank you guys for your advices which are greatly appreciated.

I understand the answer is patience and perseverance.

MAndrus, I like your advice about the Swiss clock treatment, because as a Swiss citizen, I have a tendency to do exactly that... ;)
Hansueli Ryser

You can always take a dremel tool and cut them off. Then use brass nuts next time.
Art Pearse

sounds very painful :)
G C Pugh

Don't even think about it!
Art Pearse

I've had some success using a nut splitting tool on other stubborn nuts. This tool will not damage the stud threads like a Dremel can. My application was near the fuel tank so I was reluctant to use an open flame. Nut splitters are not expensive and readily available at many auto parts shops.
Tom
Tom Heath

This thread was discussed between 11/07/2015 and 16/07/2015

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This thread is from the archive. The Live MG MGA BBS is active now.