Stavros

Just taking the fannymoulds off the 5litre V8 and all the bolts undid easily barring one, i left it overnight soaking in WD, i heated the fuck outa it, nothing, and finally it snapped off...

That enabled me to get the manifolds off, but I cant get the rest of the bolt out the head!

Its not even flush, its sticking out about 1cm, but i cant get the fucker out still with Molegrips etc.

Any ideas?

SapphyMike

drill it out..

Stavros

drill it out? thatd fuck the threads on the head tho? or am i missing summat there?

vroooom ptssssh

could hacksaw the sticky out bit off, and drill the remaining part out?

weld a nut onto it and use a socket/spanner?

Use a smaller drill bit than the bolt, and it wont fuck the thread if your carefull, then use a tap to get the remaining shit out of the threads, gotta be carefull when drilling tho

Stavros

fuck the threads?

if i could weld thatd prob be a fantastic idea

wirralphil

centre punch it in an anti clockwise direction

SapphyMike

you could re tap the head.

i'd suggest an easy out, but that may not work as it seems the bolt is in it for the long run..

NEIL A

iTrader: (6)

As said above cut the bolt flush with the head, centre punch it then drill it out with a drill bit smaller than the bolt. Then use a tap to clean up the threads.

Fast Guy

You might have to drill it out (if it won't move any other way) and retap larger and helicoil the thread to get back to where you started.

vroooom ptssssh

fuck what threads? the ones on the bolt thats useless now it's snapped and are probably already fucked from your use of mole grips? . .yes

Cut it flush with the head, centre punch & drill

Graceland

Get the blowlamp or an oxy-aceteline gas torch on the head and gentilly warm it up, then try removing the bolt working it in both directions

Stavros

not the bolts, who care about them, i mean the threads in the head you fucking spastic

thanks everyone else for advice, just not this unemployable scottish goon

vroooom ptssssh

Stavros, Why on earth would you fuck the thread in the head if you cut the bolt flush with the head. . infact HOW on earth would you do it? ou dont even touch the head. . who's the spaz now

Fast Guy

You could try some of this. Seen it the other day at the local motor factors, don't know how good it is.

Loctite Freeze Release (comes in a WD40 style can)

http://www.engineeringtalk.com/news/hec/hec137.html

Stavros

You cut the bolt flush, that wont cause a prob.

But to get it out, if you just drilled the bolt out, your gonna the threads and need the thing heicoiled or whatnot...

Or am I misunderstanding your meaning of drilling it out...

FastGuy- Looks good, best go get some

NEIL A

iTrader: (6)

If you use a drill bit a size smaller than the bolt (4.5mm drill for 5mm bolt) it wont damage the thread, you should be then able to clean out what is left with a tap.

Eagle

iTrader: (2)

get a dremel type device and flatten off the stud till its flush with the head using a cutoff wheel or grinding head...

use a small drill bit in the dremel to start a pilot hole in the centre..

using diferent sized drill bits slowly enlarge the hole with a drill..

once you get to a drill bit that will drop inside the other holes in the head stop..

go find a tool shop and purchase a tap of the correct size and use that to open up the thread without damage to it. you will not be able to do all of the hole..

use a bolt of the same size to do the last few mm of the thread but remove it once you have done one turn each time and blow out the swarf each time ..

takes some time to do it properly but will be ok ..

i use this method to remove broken studs on presssure vessels that run at upto 2.5 bar

can normally do it in 15 mins so allow yourself about an hour

just be patient and remember the first hole is the most important...

kjc300

iTrader: (1)

DO NOT cut it off until you've tried these!!!! or something like it!!!


http://www.toolsnstuff.co.uk/product...dd208db472accb


heat the head up like someone said too, then blast the stud with that freeze stuff and get the stud extractor on it!!

Last resort is cutting it off flush, then drilling!!

jameswrx

Ain't that the truth

Eagle

iTrader: (2)

if its 1 cm as he said then i doubt they will work .. not enough metal showing for it to grip onto .. but yes deffinitly worth a go .. (i have a set) also got the ones that are supposed to un wind as you wind them into a drilled hole ...

focusv8

If you have never removed broken studs/bolts from castings then you will be better off paying someone to do the job for you.
Someon like these: http://www.helicoilservices.co.uk/

After all you are going to have to buy some decent drills and a 3/8 unc tap to recut the threads and possibly a helicoil set to repair the damage you do when drilling it out. It might even cost you another head.
Unless the bolt is original its also possible it may hardened (I've ARP bolts on both my v8's) in which case you will need Cobalt drills and a lot of luck.
It doesn't help that the bolt holes are angled down so you can't see what's happening or is the engine out?
Don't buy Titanium coated drills they are a waste of money.

Any combination of tips that have already been posted will work if you have the ability.

Most important is to get the true centre of the broken bolt when you drill.

.

Rene

tap some new threads steve

Rene

dont worry steve ur quite handy so should manage

Stavros

Rene- no im not, im shit

Eagle, KJC- cheers, ill try some stud extractors, that freeze shit, and a blowtorch first i think

Esp as now theres a 2nd bolt thats the same One of the inlet manifold ones

Focus V8- Yeah mate, the engines out, and its reminded me that I really DO like working on cars, but only pushrod ones Its brought me back to the old Renault 5 Turbo days, soooo easy to work on pushrod motors, no fucking cambelt and shit to mess up for a start

Dont spose you know on an online 302ci Windsor workshop manual do you? Need to know head bolt sequence amongst other things...
Not doing major work on it, but thought its prob wise to change head gaskets and bolts, piston rings, bigends, and anything else i see fucked in the meantime.
AFAIK the engines only done 90k so its prob fine, but is still 20yrs old...

Rene

nah ur not

Stavros

Love you too

Charlie Chalk

iTrader: (1)

I always tighten the nut before loosing it

Eagle

iTrader: (2)

cleaned

Stavros

EDITED

Eagle- Thanks, shame some nobhead had to try and spoil it

foreigneRS

fight, fight, fight

as pennywise, it's always good if you suspect a bolt is gonna be a bastard to get out to tighten it a bit first to crack it.

it's too late for that now obviously. i would weld a nut to it, as doing so normally heats it enough to loosen it. but if you can't do that then drilling it out is the best way, but requires care to get the centre of the stud in the first place and to drill it sqaurely all the way through.

Stavros

Its not too late to weld it mate, but I cant weld

And I did have a quick blast at tightening it first, but no joy

Stavros

Clearly. Even the mod spotted it and binned the posts off.
But you back...

focusv8

Don't know of online manual but Torque spec HERE

Lots of info if you search here: HERE

Head sequence is:
Start with the Long centre bolt, then short centre bolt then work out each side alternate long/short pair.
Repeat on other head.

The inlet manifold is a bit tricky to get sealed.

.

Keith B

No one has recommended trying easy outs. These always worked for me.

Stavros

Sorry for what.

Your just posting more to try and ruin the post more.
If you got a problem PM me or summat, dont ruin perfectly good posts.
And if you not, just stop spamming this thread up.

foreigneRS

i meant it's too late to try tightening, rather than being too late to weld it

Keith B i think somebody already suggested easy outs. they're worth a go as they can be done when you are part way through the drilling out process. they need handling carefully so as not to put an uneven force on them though, as they can snap easily

wirralphil

easy outs on a stud that small will be pointless as they may well snap,

my other guess would be fuck it up then helicoil it

vroooom ptssssh

Yea, you've got what I meant, but as I said previously

Meaning. . use small drill bits working the size up till you get to a point where it will fuck the threads. . then tap the rest out with a . . 'tap' to clean the un-touched threads you know a tap and dye set. aslong as you drill it straight you wont touch the threads. . hopefully


for you!

did you get it out anyway?