Broken timing belt, which car next?

Richard53

gilbert_and_sullivan wrote: »

At the bent con rods?

Some mechanics have x-ray vision, Superman-stylee. Or they just 'know'.

Muscle750

In 30 years as a mechanic I've never seen the con rods bend due to a bust cambelt bent valves plenty bent con rods never apart from cars that have been driven throu floods by complete idiots

Stooby2

gilbert_and_sullivan wrote: »

At the bent con rods?

If the con rods were bent it would show by the pistons reaching different heights in the bores.

gilbert_and_sullivan

Stooby2 wrote: »

If the con rods were bent it would show by the pistons reaching different heights in the bores.

The OP wasn't having the engine stripped |(and hasn't said if they did), so how did the mechanic measure these minute differences in piston height.

Stooby2

With a ruler, or a run out gauge, engineers blue around the top of the cylinder - a whole host of ways. But, the massive dink in the crown of the piston from the valve, that gave sufficient force to bend a con rod would probaly make it unuseable anyway.

gilbert_and_sullivan

Stooby2 wrote: »

With a ruler, or a run out gauge, engineers blue around the top of the cylinder - a whole host of ways. But, the massive dink in the crown of the piston from the valve, that gave sufficient force to bend a con rod would probaly make it unuseable anyway.

All without the mechanic removing the head, this i have to see.

Stooby2

D'oh I must be in early morning mode all day at the moment. I was going on the assumption the head was off, so my bad.

Although it's not beyond the realms of possibility to measure the piston height through the spark plug hole.

gilbert_and_sullivan

Stooby2 wrote: »

Although it's not beyond the realms of possibility to measure the piston height through the spark plug hole.

Don't, i'm having flashbacks of fingers down plug holes feeling for compression and feeding a welding rod down the same hole trying to find exact TDC...arrgh...NURSE..:eek:

The things we used to get up to when we literally didn't have the money to pay someone else to fix our cars.

Stooby2

I remember my Dad having a gadget that screwed into the plug hole of Austin engines that was graduated for TDC, then various degrees before and after. They're probably long gone by now.