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#2460236 - 03/02/18 08:42 PM 69 440 (A/C) coolant leak?
70runner Offline
super stock

Registered: 01/25/03
Posts: 1024
Loc: 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?


Edited by 70runner (03/02/18 08:42 PM)

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#2460254 - 03/02/18 09:26 PM Re: 69 440 (A/C) coolant leak? [Re: 70runner]
charles6970 Offline
mopar

Registered: 01/21/03
Posts: 452
Loc: santa anna, Tx.
Yes.
obviously.

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#2460355 - 03/03/18 02:37 AM Re: 69 440 (A/C) coolant leak? [Re: 70runner]
NANKET Offline
master

Registered: 12/13/03
Posts: 4126
Loc: 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.


Attachments
image.jpg

image.jpg



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#2460390 - 03/03/18 07:46 AM Re: 69 440 (A/C) coolant leak? [Re: 70runner]
fastmark Offline
master

Registered: 01/20/03
Posts: 4627
Loc: 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.


Edited by fastmark (03/03/18 07:46 AM)

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#2460482 - 03/03/18 11:06 AM Re: 69 440 (A/C) coolant leak? [Re: 70runner]
RapidRobert Offline
Circle Track

Registered: 11/20/03
Posts: 34004
Loc: 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.


Attachments
SAM_0604.JPG


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#2460491 - 03/03/18 11:30 AM Re: 69 440 (A/C) coolant leak? [Re: 70runner]
70runner Offline
super stock

Registered: 01/25/03
Posts: 1024
Loc: Avocado country
Thx all, appreciate replies. The air pressure test with temp sender port is great idea.

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#2460492 - 03/03/18 11:31 AM Re: 69 440 (A/C) coolant leak? [Re: RapidRobert]
mgoblue9798 Offline
enthusiast

Registered: 03/16/10
Posts: 227
Loc: Atlanta, GA
Now that is a slick idea and I am kicking myself for not thinking about it before.

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#2460709 - 03/03/18 10:54 PM Re: 69 440 (A/C) coolant leak? [Re: mgoblue9798]
RapidRobert Offline
Circle Track

Registered: 11/20/03
Posts: 34004
Loc: 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.
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live every 24 hour block of time like it's your last day on earth

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#2461153 - 03/04/18 06:37 PM Re: 69 440 (A/C) coolant leak? [Re: RapidRobert]
bboogieart Offline
master

Registered: 01/12/08
Posts: 3566
Loc: 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.
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I have mechanical Aptitude.
I can screw up anything.

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#2461244 - 03/04/18 09:16 PM Re: 69 440 (A/C) coolant leak? [Re: bboogieart]
RapidRobert Offline
Circle Track

Registered: 11/20/03
Posts: 34004
Loc: Lincoln Nebraska
^^^ agreed, get several PSI in there/turn off the stereo/listen closely & you'll likely hear it
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