Only way to get an answer to that is remove the head,
Then you can check/compare the piston heights at TDC.
If they're all the same then I'd go ahead and fit a new head/chain and coolant pump.
BUT I'd recommend inspecting the oil pump and big end shells.
Timing chain is tensioned by oil pressure so lack of oil changes is what kills the chain,
And it can also kill the crank.
So head off and if good then sump off and check the shells.
Posted on Thursday 12th of January 2017Don't understand this? Ask a question