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Author aaaaaaarrrrrrrrrrrgggggggghhhhhhhhhhhhhhh
Dave A
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Registered: 10th Dec 03
Location: County Durham
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   22nd Jul 06 at 10:42   View User's Profile U2U Member Reply With Quote
in the middle of an engine re-build for a mate, just taking the head off and 2 of the head bolts were so tight that the head twisted off the bolt

its gonna be one of those days........
Gregor
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Registered: 28th Nov 03
Location: Paisley, Renfrewshire
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22nd Jul 06 at 10:44   View User's Profile U2U Member Reply With Quote
Oh god I can totally understand how shit that is

Unlucky matey
Dave A
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Registered: 10th Dec 03
Location: County Durham
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22nd Jul 06 at 10:47   View User's Profile U2U Member Reply With Quote
might just get another engine to re-build. cant be arsed spending 2 days drilling them out.
CORSA NUT
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Registered: 3rd Aug 01
Location: Wirral
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22nd Jul 06 at 10:55   View User's Profile U2U Member Reply With Quote
Can't you heat them up?? Might sound daft..
Gregor
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Registered: 28th Nov 03
Location: Paisley, Renfrewshire
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22nd Jul 06 at 10:56   View User's Profile U2U Member Reply With Quote
You can heat them up , but its getting them out thats the hard bit , when they have no head ?
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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22nd Jul 06 at 10:57   View User's Profile U2U Member Reply With Quote
Dave cant you just drill down inside them?
Gregor
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Registered: 28th Nov 03
Location: Paisley, Renfrewshire
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22nd Jul 06 at 11:00   View User's Profile U2U Member Reply With Quote
There head bolts he will go through about a kazillion drill bits

Dave A
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Registered: 10th Dec 03
Location: County Durham
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22nd Jul 06 at 11:03   View User's Profile U2U Member Reply With Quote
they are made from super hard steel. they can be drilled but its not an easy job.

Gregor
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Registered: 28th Nov 03
Location: Paisley, Renfrewshire
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22nd Jul 06 at 11:03   View User's Profile U2U Member Reply With Quote
Are they stuck in the block ?
Dave A
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Registered: 10th Dec 03
Location: County Durham
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22nd Jul 06 at 11:05   View User's Profile U2U Member Reply With Quote
well, the head is stuck on because only the top 3-4mm sheared off the bolt.
X 60RSA
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Registered: 20th Aug 01
Location: Lincoln
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22nd Jul 06 at 11:05   View User's Profile U2U Member Reply With Quote
its keeping the drill straight, alot easier on a vertical miller but not everyone has a milling m/c sat in there garage!
Dave A
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Registered: 10th Dec 03
Location: County Durham
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22nd Jul 06 at 11:08   View User's Profile U2U Member Reply With Quote
I need to buy some super tough drill bits.

any reccomendations?
Gregor
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Registered: 28th Nov 03
Location: Paisley, Renfrewshire
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22nd Jul 06 at 11:10   View User's Profile U2U Member Reply With Quote
So you were lossening the tight fucker and all of a sudden it became really loose.

Oh what a feeling
ajscorsa
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Registered: 30th Apr 02
Location: Perceton, North Ayrshire
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22nd Jul 06 at 11:46   View User's Profile U2U Member Reply With Quote
isnt there enough room to weld the head back on or weld on a not for you to try twist it out??
Dave A
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Registered: 10th Dec 03
Location: County Durham
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22nd Jul 06 at 11:47   View User's Profile U2U Member Reply With Quote
tried that before, doubt it would hold as they were rediculously tight.
ajscorsa
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Registered: 30th Apr 02
Location: Perceton, North Ayrshire
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22nd Jul 06 at 11:48   View User's Profile U2U Member Reply With Quote
worth a go before trying to drill them`
Dave A
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Registered: 10th Dec 03
Location: County Durham
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22nd Jul 06 at 11:50   View User's Profile U2U Member Reply With Quote
nah, aint got a welder handy, its over in mates garage.

im off out for the afternoon, then to buy some drillbits
langey
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Registered: 7th Sep 03
Location: Wigan
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22nd Jul 06 at 12:01   View User's Profile U2U Member Reply With Quote
keep plently of coolant on it and drill slowly
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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22nd Jul 06 at 12:03   View User's Profile U2U Member Reply With Quote
diamond tipped or titanium tungsten drill bits
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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22nd Jul 06 at 12:05   View Garage View User's Profile U2U Member Reply With Quote
i'm lost. the head has come off the bolt, but the cylinder head head wont come off? surely the headbolt without the head, would be just like a metal stud? so the cylinderhead should come off....
allza
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Registered: 14th Jun 04
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22nd Jul 06 at 17:08   View User's Profile U2U Member Reply With Quote
Yes i agree, cylinder head should come off if the head of the bolt has snapped? Also id the head of the bolt has snapped that should relieve the tension making it quite easy to get the bolt out by welding a nut on.
RobHayes
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Registered: 6th Sep 03
Location: Lincolnshire
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22nd Jul 06 at 17:24   View User's Profile U2U Member Reply With Quote
this happened on mine, come to think of it, you did it! i cut through the offending bolt with a dremel, and it came free then. only top top part of the head of the bolt snaps off, leaving the wider part holding the head down
Dave A
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Registered: 10th Dec 03
Location: County Durham
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22nd Jul 06 at 19:25   View User's Profile U2U Member Reply With Quote
yes rob, im jinxed!!!

explain more about the dremel method, ive drilled 1 out but its taken an hour, in total 3 sheared as the last person to do the head gasket was a complete chimp and didnt remove the water from the bolt holes in the block and they were rusted in solid!

it would be easy if all of the bolt head came off but it sheared just the top 3mm

 
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