seized engine bolt advice

[mickey c]

Hi guys
I'm starting a resto on a Vega but not getting very far - the engine bolt is more stuck / seized than a stuck / sezied thing. I used about a can of WD40 and
previously I have found by tightening the nuts up against some big washers with a gap on the other side I've managed to free them up. However I've now stripped the threads on both sides! A lump hammer hasn't moved it a mm! But worried too much force will snap the engine mounts. I've tried a bit of heat and am now fully prepared to right off the silent blocks but before I just keep smacking away, I wondered if anyone has a top tip they could pass on please?

[Nobby]

I had the same problem with my s1, even had a sledgehammer on it!




In the end I cut it flush and drilled it out - gradualy bigger holes till there was no meat on the bolt left- it was quite quick and easy!, the bolt was made of surprisingly soft metal !

[mickey c]

thanks Nobby
I hadn't thought of that approach! given how easily my threads stripped, I hope my bolt is equally soft metal.
cheers again
Mike

[57Speedster]

WD40 doesn't work on steel bits which have rusted together.
A proper penetrating fluid like "PlusGas" works much better, as it creeps in and dissolves the rust. It does take a while to work, so I usually spray it on and leave overnight.
A bit of heat from a blowtorch always helps too.