piston and head damage

[4door]

First run out didn`t go so well...ended up being towed home by the AA due to overheating problems.
AA man tested for the head gasket which showed it had gone. so I`ve openned it up.

what do you think?...this is the worst piston but samemarks on 2 others, not much scoring onthe bores and same marking on the head.

[johnaboyy]

OUCH!! First run too.....Gutted for you.
John.

[haadee]

If the sides are still good, you should be fine with them pistons.
Pic of the head?

[4door]

the inlet valves had a good 1mm of scale on them.

[Graham]

piston and head damage looks like detonation

[4door]

I think you could be on to something Graham as the timming was out.

[haadee]

Yes was thinking the same as Graham

[emtees]

piston and head damage looks like detonation

Exactly.

4door - what is CR in your engine?

[boXXer]

was gunna say looks like det to me not contact

[Graham]

looks to be running leaner on the effected cylinder too