quick update .. was in the deep wood single track up the hill and rock very slow speed ,,, engine over heat ..impeller mostly melt ,, engine start making nose ,,i need to get out of wood ,,finally get out of wood engine stop no coolant left .... impeller gone ,,, pull the head of,, head is melted ,,, the rest not sure yet more to fallow tomorrow ,,, now do i get an original head or do i get s3 head ??? 100$ difference ,,, are the 14 to 17 head prone to break / overheating ??? as they are same part number ..18 different part number
thanks
henri

Head is melted?!??
Description of damage please.

Even better post some pictures if possible.

One would have to assume that the impeller is just a victim of the loss of water.

If a massive alloy heat sink like the head melted what hope did a plastic water pump gear have??