Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

how do you remove a half rounded off torx bolt?

depends if its a innie or an outie lol

soak it in wd40 over night an use molegrips and brute force

or get a bolt chop the head off it and get it welded ontop .. then undo with spanner

if its a female(innie lol)..then best way is to hammer an allen key headed bit for a ratchet..then need an airgun..cant use a normal ratchet or u will just round it off even more...also if your gonna weld a nut on,depends where it is..coz if its say underneath your seat like mine,u have to basically soak the carpets in water so theres a puddle to stop the welder setting it on fire lol.

if its big enough you can jus chisel it around


u on bout the seat bolt or summat to do with the sump ?

mines the seat bolt.

A large drill, bigger than the bolt. Drill the head off and remove the remainder with vice grips.

its an innie on the seat rails

same problem as me then lol..my mates gonna do mine but havnt got round to it..best way id say is to get a big hammer,and hammer an allen key headed bit for a air ratchet..something slightly bigger than the hole..then when u get the airgun on it will rip it straight out.

roperstun wrote:its an innie on the seat rails

hammer and chisel then ... knock a line in the side then move it round with hammer n chisel.

i deal with these every day in the motor mechanic world lol

i always soak it in wd 40 the get pair of mole grips on them should be easy just make sure you get them tight on other wise they will just slip

or you could try bolt extractors you may get lucky

im with tony chissel it round n use abit of wd40 when yu got it moving always works for me ::D lol

Got same problem at the moment except there not rounded off, I need a torx kit though and to my luck there the head bolts and I need to replace the F***in gasket cos its leaking

if all else fails weld a bolt on then its easy but change to a normal bolt when its out makes life easier