pug_life 0 Posted April 26, 2006 tryed everywhere locally to get a snapped headbolt removed from the alloy block i have... all have said they don't do it and i'm about to tear my hair out anybody have an suggestions for places around manchester/cheshire as i can't really deliver the block anywhere so pickup preferable unless they do it mobile. thanks Jay Share this post Link to post Share on other sites
Guest Cartooner Posted April 27, 2006 tryed everywhere locally to get a snapped headbolt removed from the alloy block i have...all have said they don't do it and i'm about to tear my hair out anybody have an suggestions for places around manchester/cheshire as i can't really deliver the block anywhere so pickup preferable unless they do it mobile. thanks Jay Do it yourself! Drill a hole in it. Buy a counterclockwise tap to extract it. First use liberal amounts of penetraling oil though and give it time to do it's job. Share this post Link to post Share on other sites
ALEX 98 1 Cars Posted April 28, 2006 IF you manage to dril a straight concentric hole. Try screwing it down and out rather than up. Tap an M8 thread in it and use an 8.8 high tensile bolt with 2 locknuts locked together near the end so you can screw it down onto the face of the snaped stud. Heat will also make things easier. Or keep drilling it and fit a helicoil. It might be best stipping the block bare and taking it to the engineer shop. Someone will do it. The process is easy with the right tools. Share this post Link to post Share on other sites
pug_life 0 Posted April 28, 2006 well localengineering shops refused to do it don't really wanna have to go helicoil route so may be a thin drill bit and lots of precision movements on workbench tonight block is bare (again!) so its easily moveable Share this post Link to post Share on other sites
Rob_the_Sparky 9 Posted April 28, 2006 You can doa search as they have been sucessfully drilled out a couple of times to my knowledge by people on here (one quite recently) but it requires a bush to be made to get the drill central. If not central then you will most likely kill the thread and hence the block. Puma has also posted about doing it the right way and helocoiling it at a machineshop so it may just be a case of fiding the right machine shop to do the work. Rob Share this post Link to post Share on other sites
ALEX 98 1 Cars Posted May 8, 2006 (edited) Any news on this? We mangaged to drill the hole central in ours as the bolt broke leaving a flat face to mark with a centre punch. We buggrerd it up with the exctractor though that snapped in it. After 6 hours of drilling we acidently drilled out the threads as the hole went miss shaped with the bits of broken ectractor. We ended up bodging it by taking out the spacer for that head bolt and fitting an high tensile nut ground to shape to fit under the bolt hole in the block. A Perfect Bodge and it ran for a year, untill I got round to building a new engine for it. Edited May 8, 2006 by ALEX Share this post Link to post Share on other sites
petert 586 Posted May 8, 2006 I had to helicoil three holes in a block recently - two head bolt holes and one main cap. All from an idiot who did everything up too tight on the last rebuild. Share this post Link to post Share on other sites
