Hi, Thanks for the reply the engine has only done 69,000Km from new, the last owner didn't do any thing about the bad rad an blew the head gasket, I have to do some repairs on the front chassis legs so pulled the engine out on close inspection the ideal periods had allowed the rust to rampage, the engine was taken down to its component parts and is now ready to be rebuilt, the head has been ported and polished and skimmed new valve stem seals ect ect. Thanks for the suggestion.