After 10,000kms, this is an update to the thread.
When i had the head off, I got it reconditioned, and ported the water channels, in particular cleaning out the edges from the poor sand casting.
It also had 4 x 3mm holes drilled into the steel edges of the thermistat, and the multilayer steel HD head gasket (the one with the head protector shim).
So far, its well bahaved. It takes a little longer to warm up on cold mornings, but stays much cooler on highway drives, and under bonnet temps seem lower.
Here are some pics of the head mid clean up...
Cheers!
have you got any picks of the water ports that you touched up with the dremel before and after the work?
The 4wd Zone/Opposite Lock Bathurst
263 Stewart Street, Bathurst, NSW
http://www.the4wdzone.com.au/
Discounts for AULRO members, just shoot me a PM before you purchase.
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