19 replies to this topic

[Dan]

This is going to have to become an FAQ I think. It's been stated many times.

The front centre stud is the head locating dowel. It has less clearance through the head than the others do. It doesn't take much corrosion to gunge it up completely. If you can't remove it with penetrating fluid (WD40 is NOT penetrating fluid, another future FAQ point I think) or with freeze spray or heat then the best thing to do is to remove absolutely everything else, including the manifolds and unscrew the whole assembly. Literally turn the whole head to remove the stud from the block. With the head on the bench it will be far easier to drift the stud through it. This may result in the block or head being scored by the gasket but it's unlikely and the thread is course so the clearance rapidly grows larger than the gasket thickness as you unscrew the head, releasing the gasket. If the head is sliding from side to side a little then it is already released and compression is lost so it's unlikely that any compression method of removal will work.

Edited by Dan, 27 November 2008 - 02:09 AM.

[Sam Walters]

that was the last efforts lol, i tried blowing it off, shocking it and all the other methods.

[Boomboy77]

Ive had this too, I tapped the 2 holes either side wound some big bolts in and using a piece of steel between them slowly pulled it off that way.
If you make sure the top of the stud is clean it will save you having to lift it so far.

But should you not have the taps and steel, I would rotate the whole head to unscrew the stud then sort it out on the bench.

[lrostoke]

Never tried this and no idea if it would work or cause problems..but it just popped into my head

But I wonder if stuffing string through the spark plug holes would work ?? turn engine so all pistons are mid way between TDC and BDC, fill up cavitiys, then turn crank nut so the pistons pushed against the string and in turn the head ??
I wouldn't risk trying turn with starter, but doubt you could get enough force to bend anything turning by hand ?

[scrippo]

That's great guys, thanks. I'm not gonna get time to get in the garage to attack it until tomorrow so I'll let you know.

Cheers,

Scrippo