B21 block heater install

[joea99]

Today was the day I was going to install a block heater on my B21. Thought I had a hex large enough to fit the plug that has to come out. I was wrong, or lost it.

Anyone know a cheap source of large hex wrenches, etc?

 

[sandyc]

Amazon. Also use tape. I tried to used the pipe dope and couldn't get it to seal.
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[OrangeB2400]

Harbor Freight has large Allen wrench sockets. You will need a breaker bar and some heat to get the factory plug out. It was hard to get mine out of my B2400 block. I used a piece of hex rod and a 3 foot pipe wrench and preheated the plug with a torch.

 

[joea99]

I got the set from HF. I'm changing the thermostat while I have it drained. Anyone know the proper torque for the 12 mm bolts?

 

[joea99]

So, filled the cooling system then went to get a fan belt. Got back and there was a little pool of green liquid in the heater housing. Cleaned it up thinking I may have spilled some. In less than ten minutes the puddle was back. Keeps growing too. Wonderful.