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69 440 (A/C) coolant leak? #2460236
03/02/18 11:42 PM
03/02/18 11:42 PM
Joined: Jan 2003
Posts: 1,066
Avocado country
70runner Offline OP
super stock
70runner  Offline OP
super stock

Joined: Jan 2003
Posts: 1,066
Avocado country
Have a coolant leak, 69 Charger 440 with A/C, dripping from idler bracket lower bolt area. Does anyone know if either of the 2 idler bracket bolts enters a water jacket?

Last edited by 70runner; 03/02/18 11:42 PM.
Re: 69 440 (A/C) coolant leak? [Re: 70runner] #2460254
03/03/18 12:26 AM
03/03/18 12:26 AM
Joined: Jan 2003
Posts: 453
santa anna, Tx.
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charles6970 Offline
mopar
charles6970  Offline
mopar
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Joined: Jan 2003
Posts: 453
santa anna, Tx.
Yes.
obviously.

Re: 69 440 (A/C) coolant leak? [Re: 70runner] #2460355
03/03/18 05:37 AM
03/03/18 05:37 AM
Joined: Dec 2003
Posts: 4,509
northwest USA
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NANKET Offline
master
NANKET  Offline
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Joined: Dec 2003
Posts: 4,509
northwest USA
No they don't enter a water jacket. They are one inch deep and stop. But they do go through the water pump housing and attach it to the block. Could be heater hoses.

Here are pictures of an AC car with the idler removed and installed.

I'm working on a 1957 392 and I cannot believe how many bolt holes go into the water jackets. Crazy really.

image.jpgimage.jpg
Re: 69 440 (A/C) coolant leak? [Re: 70runner] #2460390
03/03/18 10:46 AM
03/03/18 10:46 AM
Joined: Jan 2003
Posts: 4,842
Abilene, Texas
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fastmark Offline
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fastmark  Offline
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Posts: 4,842
Abilene, Texas
I fought my newly rebuilt 70 Charger 440 with a water leak dripping from the lower rad hose. Ended up being the thermostat housing leaking behind the AC compressor. Had to remove it to find the leak. They can leak from anyplace.

Last edited by fastmark; 03/03/18 10:46 AM.
Re: 69 440 (A/C) coolant leak? [Re: 70runner] #2460482
03/03/18 02:06 PM
03/03/18 02:06 PM
Joined: Nov 2003
Posts: 34,750
Lincoln Nebraska
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RapidRobert Offline
Circle Track
RapidRobert  Offline
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Joined: Nov 2003
Posts: 34,750
Lincoln Nebraska
for diagnosing you can get a tank valve from O'reillys for less than $3 & screw it into the 1/8 NPT cooling temp sender port & pump it up to 10 lbs with shop air. some dish soap in a squirt bottle will help show bubbles.

SAM_0604.JPG

live every 24 hour block of time like it's your last day on earth
Re: 69 440 (A/C) coolant leak? [Re: 70runner] #2460491
03/03/18 02:30 PM
03/03/18 02:30 PM
Joined: Jan 2003
Posts: 1,066
Avocado country
70runner Offline OP
super stock
70runner  Offline OP
super stock

Joined: Jan 2003
Posts: 1,066
Avocado country
Thx all, appreciate replies. The air pressure test with temp sender port is great idea.

Re: 69 440 (A/C) coolant leak? [Re: RapidRobert] #2460492
03/03/18 02:31 PM
03/03/18 02:31 PM
Joined: Mar 2010
Posts: 304
Atlanta, GA
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mgoblue9798 Offline
enthusiast
mgoblue9798  Offline
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Joined: Mar 2010
Posts: 304
Atlanta, GA
Now that is a slick idea and I am kicking myself for not thinking about it before.

Re: 69 440 (A/C) coolant leak? [Re: mgoblue9798] #2460709
03/04/18 01:54 AM
03/04/18 01:54 AM
Joined: Nov 2003
Posts: 34,750
Lincoln Nebraska
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RapidRobert Offline
Circle Track
RapidRobert  Offline
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Posts: 34,750
Lincoln Nebraska
Bro I've been on here 13 yrs & I learn something new here EVERY day. there are many many off the charts extremely sharp/knowledgeable guys on here.


live every 24 hour block of time like it's your last day on earth
Re: 69 440 (A/C) coolant leak? [Re: RapidRobert] #2461153
03/04/18 09:37 PM
03/04/18 09:37 PM
Joined: Jan 2008
Posts: 3,763
Lost and Spaced
bboogieart Offline
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bboogieart  Offline
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Lost and Spaced
Yep, works great.
I got the idea from Robert as well.
Smart fella. up

Be careful using the air though.
Radiator only holds up to about 16# in good shape.
Don't need near that for leak to show itself.
I used a hand held bicycle pump.


I have mechanical Aptitude.
I can screw up anything.
Re: 69 440 (A/C) coolant leak? [Re: bboogieart] #2461244
03/05/18 12:16 AM
03/05/18 12:16 AM
Joined: Nov 2003
Posts: 34,750
Lincoln Nebraska
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RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
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Joined: Nov 2003
Posts: 34,750
Lincoln Nebraska
^^^ agreed, get several PSI in there/turn off the stereo/listen closely & you'll likely hear it


live every 24 hour block of time like it's your last day on earth

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