Dangerous repair techniques

[LotusOmega375D]

What sort of idiotic risks have you taken during car repairs.

My parents had a collection of classic cars. Some of them wouldn't be driven for months on end and often ended up with a seized clutch. Our standard practice for solving this was to jack up the back wheels, start the car in gear and get up to max revs in top and then stamp simultaneously on the brake and clutch pedals. Et voila: one freed clutch.

Looking back though it was madness: had the car slipped off the jack at maximum speed, we'd have gone straight through the garage wall, through the kitchen, down the garden and out into the field beyond!

Who's got other experioence of dodgy repair techniques that we probably shouldn't all follow?

[5lab]

LotusOmega375D said:

Looking back though it was madness: had the car slipped off the jack at maximum speed, we'd have gone straight through the garage wall, through the kitchen, down the garden and out into the field beyond!

surely it'd just have wheelspun/stalled?

[Codswallop]

You'd have been fine;

http://www.youtube.com/watch?v=pTRow32_TLQ

[Byard]

5lab said:

surely it'd just have wheelspun/stalled?

My guess is it would have twisted the driveshafts.