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back flush 1937 Super-Eight (and others)
#1
Home away from home
Home away from home

Bob Supina
See User information
This is how I have done it many times:

Back flushing 1937 Super-Eights
1. Remove the upper radiator hose
2. Using a hose clamp and piece of leather or rubber seal off the inlet to the top tank.
3. Fashion a dual valve to the upper radiator hose with one port adapted to air pressure fitting and the other port adapted to a garden hose.
4. Take an old bed sheet and clamp it to a section of radiator hose (preferably ‘L’ shape)that can be press fit into the top of the radiator.
5. Rotate 180 degrees the fitting on the head.
6. Connect the radiator hose with dual valves to the fitting on the head.
7. Using a garden hose fill the radiator until the water runs out the top and close the valve.
8. Connect air compressor hose to the air valve and when compressor has 100 pounds, open the air valve.
9. Consider doing steps 7 and 8 a couple times.
10. Open up the bed sheet and see what has come out.
11. P.S. you might want to have an umbrella handy.

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Posted on: 10/23 21:52
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Re: back flush 1937 Super-Eight (and others)
#2
Not too shy to talk
Not too shy to talk

PackDan
See User information
I am going to give this a shot. Way better than the way I did it.

Posted on: 10/24 21:45
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Re: back flush 1937 Super-Eight (and others)
#3
Home away from home
Home away from home

TxGoat
See User information
Be sure the pressure can escape readily. The radiator won't stand high pressure.

Posted on: 10/25 14:17
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Re: back flush 1937 Super-Eight (and others)
#4
Not too shy to talk
Not too shy to talk

PackDan
See User information
I will 100% stand behind this method of flushing. I just finished up a weeklong soak with thermocure. Drained it all out, come out very dark green and cloudy, started flushing it. When I got clear water running out, I hooked up the compressed air and did a few rounds of fill and blow. I got more dark water out that was hiding in there somewhere. When no more funk came out I refilled with 50/50 antifreeze and got her hot. Wouldn't go over 165F, granted it's chilly here in Wisconsin.

Posted on: 11/14 13:50
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