Member - DOZER replied:

Gday Johnny
Good motors these...from memory there is a small plug in the side of the block and to the rear,on the exhaust side to let water out.
Cant say where ther freeze plugs are, but there would be some somewhere...
Andrewwheredayathinkwer mike?

floyd replied:

Hi Jonny, I am not sure if you will get much help on block heaters from Australia. We do not use them here or need them (too warm). I lived in Canada (BC) for 5 years and do know what a block heater is however I have never seen one here. I actually live and work in the Australian alps and consult for a few of the ski areas and I also owned an HJ 61 with the 12HT motor for several years. I have never had cold starting problems with this motor in temperatures down to -10 C. Not sure how they go in colder temps like you get in Canada though. I certainly found the 12HT better than the non turbo 2H in the cold for starting so I reckon you have got yourself a good cold weather motor.

Mine also had the front and rear heaters and the rear one cooked like an oven. It was lucky for the rear passengers that it had a temp control on it. Mine also had 2 supply lines (one for each one). I guess that this is so as they both get even temperatures as if the water circulated through both then the second heater would run colder than the first. Sorry I know nothing about the block heater for that engine. Cheers Floyd.

Kiwi Ray replied:

Hi Johnny
The frost plugs are under the manifold on the RH side
If you care to give me a couple of days I will see if I still have the W shop manual and will get back to you
Ray

johnny replied:

thanks for your help guys. I still havent been able to install this heater but I plan on tackling it this weekend. As long as I can find that damn frost plug or drain then I'm in business.
cheers!