Plenty of lube... soak overnight... a low density oil like WD40 will do. Then, strike the head a couple of times, try your luck. Following which, use a cold chisel and a mallet on the bolt head - build a notch with it, taking care to position the chisel facing anti-clockwise - the direction to loosen. It works if nothing else does... be patient though!

it hapend the same to me! i had to cut the head off and drill it out. but it didnt stay so good.
what you culd do allsow is;
- heat it up verry well
- grind two of the sides of the bolt so you can get a spaner on it
- our the hardest!!! drill a small houle on the bolt, get a bolt withe a left scrwe, titen it to the bolt on the manifold and scrwe it out!

Good luck!

By a Stillson I assume you mean one of those big pipe spanners.




Doubt I could get one in on this manifold bolt, but they really work hey? They just look like a big shifter...

oops I posted on the pic... anyway...
If your gonna try to hammer a socket over it, get the cheapest Chinesiest socket you can find, It will be more likely to stretch around the bolt. I think a decent socket would simply crack.

I say file down two sides so you can get a 13mm open ender at it. (In this case you'll want a quality tool, under no circumstances use a Chinese shifter)

I think the only problem using a cheap-ass chinese socket will be that the ratchet that comes with it cannot supply any torque to the bolt....a Kincrome (hi quailty brand in Oz) supplies the torque but I guess might be harder to belt down.

pitanando I have heard that heating up bolts breaks up the rust (heat the bolt to glowing). The rust burns off (I'm told).

I don't have a blow torch at the moment...but might be something I invest in.

Don't have a welder either or I could try some of the welding solutions I have heard of.

I'm home in a few hours, then the excitement will begin....

In that case just get the socket, hammer that on, then put a kingchrome handle on it and turn.
Quote:
My socket set is Kingchome, and Is very good, found out recently that Sidchrome (I always thought better than Kingchrome) are now made in China or Korea or something like that, have to see what quality/price is like now.

if all else fails, u can get these things called an ez-out its like a tap i think has left thread these are made for taking out bolt that are broken or wateva. cost a few dollars but work good....

Happy to report to all...the bolt came out.

Method:
Sprayed rust penetrant all over the area...left overnight.
Came back the next day sprayed rust penetrant all over...left overnight.
Belted the crap out of the bolt head with a hammer (well a few persuasive taps anyway)
Got a 13mm socket from the Kincrome set and belted it onto the head of the 14mm bolt.
Much grunting and elbow snapping and presto! Manifolds now separated.

Belting on 13mm (w/bolt cutters)
Couldn't find the hammer

Then removed bolt with some vice grips
Bolt removal

The finished product

Appreciate everybody's input!

Glad everything turned out alright, looks like it came out reasonably easy in the end

Yeah...could have been a lot worse.

I imagine it's the first of many...working on old cars is always going to lead to trouble sooner or later.

I still think one of the more satisfying points of owning the 1200 is the support, and sense of community the car creates on this site.