Flushing engine coolant passage
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Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Flushing engine coolant passage
Just need to yes or no. I have my 302 heads ready to install, but the coolant passages where I scraped the block have crud in under the surface. I have already cleaned the threads for the bolts.
Can I just assemble everything, roll truck out of the garage, hook my garden hose up to my flushing "T" I have installed in the heater hose, and flush the block out with the block plugs removed, and then use my air compressor to remove as much water from the block, before adding fresh coolant?
Weather here tomorrow is supposed to be in the 50's, so it will be a prime opportunity to do so. Literally, this step is all that is stopping me now, because, I can't go further without knowing for sure. Only other option is to Carefully put water in the exposed passages, and then drain and pray not to get water in the cylinders or inside the block itself.
Thanks again for any ideas and help.
Can I just assemble everything, roll truck out of the garage, hook my garden hose up to my flushing "T" I have installed in the heater hose, and flush the block out with the block plugs removed, and then use my air compressor to remove as much water from the block, before adding fresh coolant?
Weather here tomorrow is supposed to be in the 50's, so it will be a prime opportunity to do so. Literally, this step is all that is stopping me now, because, I can't go further without knowing for sure. Only other option is to Carefully put water in the exposed passages, and then drain and pray not to get water in the cylinders or inside the block itself.
Thanks again for any ideas and help.
Cargo Master
Joined: Nov 2013
Posts: 2,168
Likes: 4
From: South Central,MO
I would do it with the engine assembled and running. The heat will help to break everything loose. Add a good system flushing agent and go for a drive, then come back and do the garden hose thing, fill it with water, go for another drive, garden hose thing one more time, and then you will be ready for coolant.
Thread Starter
|
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
I would do it with the engine assembled and running. The heat will help to break everything loose. Add a good system flushing agent and go for a drive, then come back and do the garden hose thing, fill it with water, go for another drive, garden hose thing one more time, and then you will be ready for coolant.
I'm sick of being stuck inside not being able to get it done in nice weather and it not being driveable.
Cargo Master
Joined: Nov 2013
Posts: 2,168
Likes: 4
From: South Central,MO
Remove the upper rad hose too before you put in the coolant. Sometimes at final flush you can get some goo trapped on top of the t-stat. If you do this, you can get away with not removing it for flushing.
Cargo Master
Joined: Nov 2013
Posts: 2,168
Likes: 4
From: South Central,MO
Oh yea, almost forgot. If you do remove the t-stat for flushing, block off enough of the radiator to bring it up to normal temp. Not too much, though. You don't want to ruin those new heads!
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