how to remove rusted on bolts

[plunky]

been trying to get my cat off to put my decat on and the 2 bolts attached to the downpipe are well and truely rusted on, i cant budge them at all.
does anyone hae any effective methods of removing rusted on bolts apart from putting an angle grinder to it?
cheers

 

[Fred@BTM]

put an angle grinder to them!

 

[kully]

drill ?

 

[edde]

Penetrating oil or/and heat (just try not set the oil on fire).

 

[plunky]

yeah i was thinking the angle grinder might be the quickest and easiest option

 

[len_beach]

Two ring spanners. Work like mad until the head shears off of the bolt.

 

[V1NNY]

wd40

 

[Fred@BTM]

put an angle grinder to them!

what i said

 

[edde]

put an angle grinder to them!

what i said

Cheaper not to have to replace them though.

 

[Djw John]

Penetrating oil, then heat on the surrounding area and then grinder

 

[Fred@BTM]

what i said

Cheaper not to have to replace them though.

pointless putting them back on!

and edde how much do 2 nuts and bolts cost?

 

[edde]

Cheaper not to have to replace them though.

pointless putting them back on!

and edde how much do 2 nuts and bolts cost?

I'm truly cheap.

I still owe you a bolt any idea on what type you'd like?

 

[Graham Gooch]

Depends, where the bolt is.

Oxy-Acetylene has shifted 99.9% of all the 'impossible' to shift rusted bolts i have come across although its not always practical (or safe LOL) to use it.

Lots of wd40, come back the next day, you got impact wrenches to try. Push comes to shove grind off but thats pikey tbh.

 

[Djw John]

Yeah oxy acetyline is a gurantee, just dont use near fuel tanks! Usually just melts the both into submission!

 

[Graham Gooch]

....the subsequent fireball would melt your face also. LOL

 

[Djw John]

I was touching cloth the first time I used it!

 

[domjolly]

impact wrech i had the same problem changing my springs on the two bolts vy the front disc worked straight away

 

[Lee-182]

wd40 and leave it for a while