Coolant Draining Troubles - JeepForum.com
 
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post #1 of 10 Old 01-21-2013, 08:07 PM Thread Starter
marksud
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Coolant Draining Troubles

I'm currently underway with removing the head to replace some freeze plugs and the head gasket. I drained the coolant through the radiator however, I'm not sure if there is a drain plug on the block. After draining the radiator I did notice some coolant remaining in the intake manifold and the hose. It's a 85 with a 258 inline 6 (just for reference).

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post #2 of 10 Old 01-21-2013, 08:23 PM
Mean Max
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Driver's side of the block, below the 2nd & 4th freeze plugs.



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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

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post #3 of 10 Old 01-21-2013, 09:23 PM Thread Starter
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Thanks.
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post #4 of 10 Old 01-21-2013, 09:29 PM Thread Starter
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Max... upon closer inspection I don't have that many freeze plugs on my drivers side. I'll post a picture tomorrow morning for you all to look at.
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post #5 of 10 Old 01-21-2013, 10:14 PM
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Max... upon closer inspection I don't have that many freeze plugs on my drivers side. I'll post a picture tomorrow morning for you all to look at.
Quite possible. The pic I used is just one I found quickly online to use for reference. But you should still have at least one threaded bung on the driver's side.

I have several 258 equipped CJs at my shop, and a 1984 model 258 on the floor. I'll verify the exact location in the morning.

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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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post #6 of 10 Old 01-22-2013, 08:32 AM Thread Starter
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Thanks! Appreciate your time to help!
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post #7 of 10 Old 01-22-2013, 08:57 AM
82JeepCJ7
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I know this is on an AMC V8, but the same can be used on an inline 6.
Remove the radiator cap. After draining all the coolant out, install a airline quick disconnect male into the threads of the block. Hook up some regulated air, not to exceed 10psi. That air will force out any fluid that is still in the block to the radiator.

When I did my block, I made a device to inject air and water to flush the block. I used higher psi, but I didn't have any hoses, etc hooked to it. You would be amazed at what comes out....




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post #8 of 10 Old 01-22-2013, 12:23 PM
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damn 82 that'll make the grass grow
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post #9 of 10 Old 01-23-2013, 06:47 AM Thread Starter
marksud
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Wow! Didn't see that coming out of the block. Another question. Is it necessary to drain all the coolant in the entire engine just to remove the head? Or will draining everything that is currently in the radiator enough? I've heard it both ways.
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post #10 of 10 Old 01-23-2013, 06:49 AM Thread Starter
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I should also point out that the only plug I'm replacing is the one on the rear of the head (culprit to the the green puddles I seem to leave everywhere...)
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coolant , head , head gasket , radiator drain

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