was wondering if anyone could tell me whats the chances of a 2001 1.8 a4 avant not having hit valves when the cambelt stripped cars was doing about 100 km/h and if theres a way of checking it without taking the head off
thanks

 

I'm thinking the chances are about zero.

As for checking while the head is still on; no problem, find a shop with bore scope equipment (they can image the cylinder via the spark plug hole).

 

Chances are Slim & None!

 

ooops, interference engine, simple compression test will suffice, also chances are it has shattered the valves depending on how high the revs were. If so, game over complete new block rather than just head.

 

thought as much
the scope is a bit of a problem as my workshop doesn't have on but thanks

 

Just compression check it. That'll tell you. If the valves are destroyed the head will need to come off anyway. That'll let you see the cylinders and decide if you can salvage the short block.

 

I'm thinking that to perform a compression test the OP would have to go through the bother of putting a new timing belt on an engine which probably needs major work.

 

Compression test is not possible without proper alignment of camshaft to crank.
A leak down test is possible but not too many diyers have a leak down tester.
I would remove the valve cover & look for excessive clearance between the cams & the followers , that will be a sure sign of valve damage.

 

Agreed with shipo and M5S5. Sorry for the brainfart.