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01-30-2015, 10:05 PM | #1 |
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Join Date: Apr 2012
Posts: 141
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Model A radiator flush question
The water in the radiator in our '31 is a little dirty and I'd like to flush it out. Just got the car a few days ago and it's been sitting for a while. What is the best product and process for doing that? Thanks
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01-30-2015, 10:47 PM | #2 |
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Join Date: May 2010
Location: Portland, Oregon
Posts: 5,906
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Re: Model A radiator flush question
My dad taught me 55 years ago to put a hose in the fill neck and run the engine with the drain cock open, balancing the in and out flow, and running the engine at the same time. After about 15 minutes you're gonna get all you're gonna get. Fill with fresh water and a little water soluable oil or anti-rust stuff, and go. If you've got petroleum residue in your cooling system, that's a different trouble.
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01-30-2015, 11:39 PM | #3 |
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Re: Model A radiator flush question
I made up a couple of adapters to fit the lower hoses. One has an adapter to receive water from a hose, the other to a hose for a drain. I force the water onto the bottom of the radiator and out the block. After 15 minutes I reverse the adapters and 15 minutes the other way.
Fill with your favorite whatever.
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01-31-2015, 01:37 AM | #4 | |
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Location: Portland, Oregon
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Re: Model A radiator flush question
Quote:
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Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole. |
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01-31-2015, 07:55 AM | #5 |
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Join Date: Apr 2012
Posts: 141
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Re: Model A radiator flush question
Thanks for the help. Sounds easy enough and makes sense. I'll get that done today. Thanks again
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02-01-2015, 03:03 PM | #6 |
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Location: oroville calif
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Re: Model A radiator flush question
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02-01-2015, 04:11 PM | #7 |
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Join Date: May 2010
Location: santa cruz, calif
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Re: Model A radiator flush question
after flushing with water until it runs clean, put in a tablespoon or two of cascade dish detergent and drive it around for a while, then drain. . This will scrub out the grease from the water pump lubrications. Once the grease is removed, vinegar will have better access to attack the rust.
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02-03-2015, 11:24 AM | #8 |
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Join Date: Aug 2014
Location: Canotn, NC
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Re: Model A radiator flush question
Vinegar works well but be sure to clean up any spills or splashes from leaks or leaking water pump immediately as it will damage your paint (even base coat clear coat) and require a good buffing to fix. Guess how I know?
I had all kinds of little rust spots on the firewall and in and around the louvers on the hood panels that I attempted to wash off after one week to no avail.
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02-03-2015, 11:33 AM | #9 |
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Join Date: Jul 2013
Location: San Antonio, Texas
Posts: 687
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Re: Model A radiator flush question
After I did the vinegar flush, my head gasket started to leak. Don't know if the vinegar caused it or it just coincidentally started about the same time.
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02-03-2015, 11:43 AM | #10 |
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Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
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Re: Model A radiator flush question
I use evaporust for cooling systems...
Does not hurt the paint or internals... I guess if your frugal you take your chances |
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