Thread: Timing Belt Damage

It might help if you indicate what model car and what engine.

Just remembered that I forgot to do that.

1996 Disco 300tdi.

On a 300TDi, when the belt lets go, it is rare that there is any damage other than bent push rods.

However...

From your description, it sounds as though you may have ended up with at least a bent valve!! Then, if the valve is bent & was trapped when the piston came up, you could have damage to the piston and/or damage to the valve guide!

IMHO - It sounds as though it's going to be worth getting the head off for an inspection.

M

Thats what I suspected, the head is only a few months old (did it myself as a project), I foolishly did not replace the timing belt.

What is the worst case scenario here?

Originally Posted by kkjkeane

Thats what I suspected, the head is only a few months old (did it myself as a project), I foolishly did not replace the timing belt.

What is the worst case scenario here?

Worse case would be valve sized hole is piston, is the valve stuck open or closed ?

Worst case would be:

New head
New timing belt
New (OS) piston(s)
New pushrods
New rocker arm
(Rebore of block to OS)
Plus associated bolts, bearings and gaskets

You won't know how much of the above you need until the head is off.

Originally Posted by kkjkeane

.....I foolishly did not replace the timing belt......

Ouch.

Failure to replace 20 buck part, leading to (potentially) a major rebuild as isuzurover has said.

I really hope you're lucky and have best case scenario only, 1 valve, 1 pushrod and the belt.