Does Timing Belt failed will affected cylinder head?

Its Spectra 1.6 Auto 16 Valve.

Let me tell you the problem that i faced now, i suspected that the mechanic trying to sabotage my cylinder head with tapping on the cylinder head. (previous pictures shown - why only certain area). Yes, there was a bent valves as the mechanic told me but most of the mechanic here did not really see the tapping affects on the cylinder head in their years of experienced. If that the taping caused by the broken valves, why its only at one area and not at all particular cylinder head area?
In your experience when the small valves broken; does it look like in the pictures?

If its crack or else it totally can be accepted but then the tapping affects seems doesn't really right in the eyes.

Yes i did get back the cylinder head, piston and broken valves yesterday and today i'll send for appropriate testing.

I guess this is something to do with the attitudes toward getting the good business margin in particular case especially to me who are not really know the engine aspects.

What is your opinion?
HERE IS ANOTHER IMAGES to be evaluates

Your first picture on the left side was actually looks like my problem but it has both side tapped effects. Was it because of the broken valves, and how technically it happened? In my cylinder head there is effects on the upper side, and I just want to make sure that it wasn't cause by the timing belt failed but in fact by the human which sabotage my cylinder head. I can't still believe that there is an example of the same problem.

Please help and tell me the technical and mechanical of this problem. In your experience, it possible to have the broken cylinder head that cause by the timing belt failed?

I really need this explanation and proof that my cylinder head isn't really that way by the broken valves. Why I am saying that is because most of the mechanics here didn't really see this problem if I drove at 60KM per hour. They have one similar case and the driver drove his car at 100KM per hour but then nothing broke his cylinder head. That's is a big question to me, why it happen to my car?

Could you really give some more clear advise. I will send the close up of the piston and 2 broken valves.

You can see what I meant toward this discussion. See the broken valve and try to match the edges of broken each of it. It is clear didn't match and I suspect that the rsponsible mechanic had sabotage my thing.

Thank you. I appreciate it.

Here is the pictures. For your information, i might use your explanation as one of my arguments toward the workshop plus my experience dealing with the responsible tech.

Hope you could help me in facts and mechanical statements.

See the piston, its was a huge damaged on it with a hole and tapped effect.

I'm wondering why on the cylinder head itself only one part caused a damage.
Within that cylinder another bigger valves didn't get any effects at all. How could you trust it? It suppose affected to all things in the cylinder head based on the piston damages..

See the small valves, it was broke and the edges didn't match (sorry for the out of focus images - using N80 phone though). Imagine the damages on the piston and see the valves, are you really think that the valves cause the hole? The valves itself didn't really has huge damage, am i right?

What is your judgement and evaluations?

Thank you. I appreciate it.

Thanks Paul, i'm kinda satisfied with your explanations on the piston and valve. Again back to the cylinder head, was it possible to have one upper side to be damaged? (Refer to my case), As you described, "When this kind of situation occurs it may be in one, two, three or four of the cylinders. The head that I showed was an extreme situation, thus why I saved it. More typical is one or two cylinders that get damaged and usually the valves only bend not snap. It was so extrodinary it was worth documenting. "

So, i'm just curious on how the badly piston can cause the one side cylinder head damaged. I assumed that it must damage all rounded in the cylinder head face. But it won't, right? THAT'S question didn't really answer and I wanted to have the wider opinion among your colleagues.

YES, techs are paid on labor but telling you the truth, in Malaysia this don't really applied to most of the techs. They tends to mark up the prices and then be able to get their own profits out of it. Not to give bad interpretation of Malaysian techs but they are most likely to do that.

I suspect they change my cylinder head with another car because during that time there was one case that has similar situation and it might happened.

The truth is, I did filed the case to the consumer court and will be hearing on the coming 1st October. I want to win this case and had them pay for me. Unfortunately, as an expert you are not on my side and I have to be ready to face any consequences.

The motivation he had to do that is for the profits margin.

The curiosity of his sincerity would be these
1. He did asked me that time, was it me really know about an engine? My answer was definitely, I don't know anything about that.
2. I asked him to show me where was the damage, he refused to do that until I towed it back without any repairs.
3. I asked him why I can have the pics that he captured at the first stage of opening the engine. He said, that pics was for company goods and it was confidential.
4. I asked him how he tested the cylinder head? Any report or techical expalantion? He didn't really show his professional attitude where he just mentioned that the other workshop had an agreement with that the cylinder was faulted.
5. He took a week to revealed the cylinder head problem. In facts the quotation was too shocked. RM10,000.00 about U.S2940.00 to repair the whole engine. It was unbelieveable here in Malaysia.

My question to you:

Between cylinder head and piston, which one on the top of its configuration? If the cylinder head on the top, the cylinder head must be opened and clearly reveals the damages right?

BUT in my situation, at the first day he showed to me the piston, why he didn't shows the cylinder head? He said that he had to test the cylinder head first, if he was very sincere, he must show to me the damaged area then I can trusted him. It didn't really happened that time, after 2 days he just mentioned cylinder head fault but didn't show the damages. I suspected him hiding something. I'm not satisfied then I towed it to the other workshop and they revealed to me damaged cylinder head. How should I trust him?

Paul, I need some other opinions on this matter. Thank you. I appreciate it.

Paul

Another suspected issues.

During the first I saw the piston, everything was locked in to its place - all the valves was jammed. Can't pulled out. If its broke, for sure the two broken valves can easily fall off right? But it did not happened.
The tech demonstrated to me how it was hard to pull off.
My question, was it really hard to pull off the broken valves - as my pics. Was it did not fall off when you opened up the thing? Erm? BIG QUESTION, though.

Thank you.

Do agree our culture is different because i've been to San Francisco and stayed there for 2 years. 2002 - 2004.

Today, i will admit that the damaged of the piston, cylinder head, valves and any other mechanical proof was proven true. It is because after few days searching, investigated and reviewed your comments; I totally agree that my jugdement was wrong but not to the attitude of that technician/mechanic.

Yes i do not like the repairs cost becuase he play around with the figures and put 2 method in the quotation. I'm so surprised that he put cost for the inlet valve seat regrinding for the old head and also charged me with the new cylinder head.

My understanding if the old head can be repairs with regrinding, skimming etc he should not put the new head for an extra cost. I do believe if i agreed with his quotation, he will definitley go for the old one and have repair it and yet i do not know anything just pay the amount stated. Luckily i knew his tricked and now wait for the consumer lawsuit on coming Monday.

Wish me luck paul. I appreciate your explanation and great knowledge ya.
Here me and my family. We are at Lake Tahoe Area. Just for fun with you paul.