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Re: More cooling system cleanliness issues
[Re: hooziewhatsit]
#1388444
02/17/13 03:11 PM
02/17/13 03:11 PM
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Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
pinkduster
master
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master
Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
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Quote:
Quote:
If it's that rusty internally then the original steel freeze plugs are probably iffy at this point. You may just be on limited time till one starts leaking.
  Especially if you start dumping acids in to clean everything up.
My 318 flushed clean, but still had a couple inches of crap behind the freeze plugs.
Back in the 90s when I was daily driving my 71 Duster Twister, one of the freeze plugs on the back of the block started to leak. I pulled the trans and replaced all of them on the back and sides. Couldn't believe all the rust and crap down in there that would not flush out. 
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Re: More cooling system cleanliness issues
[Re: Commando1]
#1388445
02/17/13 03:47 PM
02/17/13 03:47 PM
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Joined: Aug 2007
Posts: 1,271
Vista, California
67Satty
pro stock
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pro stock
Joined: Aug 2007
Posts: 1,271
Vista, California
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Quote:
Quote:
I have heard of people having good luck with Cascade, no joke.
Put some Tide in there, too.
No Tide would foam up too much. Seriously, look up what the chemical used for coolant system flushes is, then look at the first ingredient listed on your box of Cascade and you will see they are both Sodium Carbonate.
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Re: More cooling system cleanliness issues
[Re: JohnRR]
#1388446
02/17/13 03:55 PM
02/17/13 03:55 PM
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Joined: Sep 2010
Posts: 41
rockville va.
superbee68
member
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member
Joined: Sep 2010
Posts: 41
rockville va.
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knock out freeze plugs as posted by johnrr
Last edited by superbee68; 02/17/13 04:01 PM.
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Re: More cooling system cleanliness issues
[Re: 68_CONV_300]
#1388447
02/17/13 04:42 PM
02/17/13 04:42 PM
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Joined: Jan 2003
Posts: 27,468
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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Quote:
I'm with JDMopar on this one ... the block is going to have to come out ,be disassembled, and cooked clean. ...
I've found jut cooking or hot tanking it doesn't get everything.
You really need to physically get in there and pick it clean. Long wires, brushes, picks, curved radiator hose picks, screwdrivers, etc. That and compressed air.
I did that with two 340 block for my car and cruise them a 3500-4000 rpm is the blazing summer heat for hours. No cooling issues.
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Re: More cooling system cleanliness issues
[Re: Challenger 1]
#1388450
02/17/13 05:25 PM
02/17/13 05:25 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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BTW back in 2007 I pulled my 340 and 727 one Sat morning to replace all the core plugs since one was leaking. i REPLACE THE ONES BEHIND THE ENGINE TOO SO THE TRANNY GOT SEPARATED. Used a pressure washer to clean out the block real good. Put it back together with brass plugs Sat night and Sun by 3PM I was driving my car, all proud of a job well done!!  3 months later the motor won't turn over and I find water in #5 cylinder. Pull the motor and trans again to find a cracked cylinder, more like a really small hole from rust on the back. The car sat for 17 years in my garage with anti freeze in it, but was still rusted bad. I started the car about once or twice a year for 17+ years, not good for the cooling system.
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Re: More cooling system cleanliness issues
[Re: 67Satty]
#1388451
02/17/13 06:06 PM
02/17/13 06:06 PM
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Joined: Aug 2003
Posts: 1,062
Amherst,NY
challengermike
super stock
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super stock
Joined: Aug 2003
Posts: 1,062
Amherst,NY
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Quote:
I have heard of people having good luck with Cascade, no joke.
That works great if you have had atf in the cooling system but not so sure it would work for rust.
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Re: More cooling system cleanliness issues
[Re: JDMopar]
#1388452
02/18/13 01:41 AM
02/18/13 01:41 AM
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Joined: Jul 2005
Posts: 757
Toronto, Ont, Canada
boydsdodge
super stock
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super stock
Joined: Jul 2005
Posts: 757
Toronto, Ont, Canada
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Quote:
My GY3 71 Challenger was a California car for nearly 30 years. Apparently they never used antifreeze, because the cooling system suffered from the same thing you're describing. It's a small block, and had a leaking freeze plug in the back of the block. I was going to fix it when I replaced the transmission, but when I popped it out and saw what was inside..  I pulled it out, removed all the freeze plugs and used a pressure washer to clean out the block. About a half a yard of crud came out! Installed brass freeze plugs, and put it back in the car. I had the radiator flushed and put it back in, and never had anymore trouble with it gunking up. I know you don't particularly want to pull it, but that may be the best option. It will cost you more time than money. Good luck. 
I had to do just that on my 72 Polara Wagon 400.
Did it on a hoist with full wet unit and goggles.
It worked.
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