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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Freeze Plugs

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Old Sep 10, 2014 | 01:47 AM
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Freeze Plugs

Truck: 1972 F100, 4X4, 390 engine, manual transmission.

Does anyone know if there is a freeze plug on the back of the engine, between the engine and the transmission?

I found one bad freeze plug just in front of the starter motor, leaking onto the headers.

I have antifreeze dripping (very very slowly) from the flywheel dust cover hole, and I am unable to understand where it is coming from.

Thanks in advance for the help!
 
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Old Sep 10, 2014 | 06:50 AM
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No water jacket freeze plug on the rear of the block. Your leak is possibly coming from rear of the intake manifold. Get a cooling system pressure tester to help locate the leak.
 
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Old Sep 10, 2014 | 03:07 PM
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Originally Posted by instig8r63
No water jacket freeze plug on the rear of the block. Your leak is possibly coming from rear of the intake manifold. Get a cooling system pressure tester to help locate the leak.
2x Bobby. Also a small mirror. Swipe your wife's compact.
 
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Old Sep 11, 2014 | 10:32 PM
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Originally Posted by JEFFFAFA
2x Bobby. Also a small mirror. Swipe your wife's compact.
#1. Jeff what if his wife is a plain Jane kind of gal and don't wear any
makeup and don't even powder nose or face ??

#2 What if no wife?

# What's a guy to do?

Orich
 
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Old Sep 12, 2014 | 12:09 AM
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Originally Posted by orich
#1. Jeff what if his wife is a plain Jane kind of gal and don't wear any makeup and don't even powder nose or face ??
Answer: Time to treat her to a day spa - fingers, toes, a massage, and a makeover for your hot date (dinner and a show) with her in that evening. You get a day's worth of uninterrupted wrenching. Priceless. .. prolly get layed too.

Originally Posted by orich
#2 What if no wife?
Answer: Break out a putty knife and pry off the fisheye mirror on the passenger side of your daily driver. Alternatively, remove one head from your Western mirrors.

Originally Posted by orich
# What's a guy to do?
Answer: Head to your local Harbor Freight and plunk down $3.99 for Item#7361.

 
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Old Sep 12, 2014 | 01:40 AM
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Thanks

Hope I am doing this right. I want to thank the people who responded to my post.

I learned that there is something that looks like a freeze plug that is actually the rear cam shaft plug. This plug is not part of the water jacket.

My son found leaks in the rear two freeze plugs that showed a clear trail of antifreeze that blew back to the clutch dust cover. We looked inside and there were no leaks.

Both plugs have been replaced with brass.

Again, my thanks!
 
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Old Sep 12, 2014 | 01:48 AM
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Originally Posted by instig8r63
No water jacket freeze plug on the rear of the block. Your leak is possibly coming from rear of the intake manifold. Get a cooling system pressure tester to help locate the leak.
Thanks for the help! Problem was freeze plugs leaking back to the dust cover.
 
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Old Sep 12, 2014 | 04:51 PM
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Originally Posted by HIO Silver
Answer: Time to treat her to a day spa - fingers, toes, a massage, and a makeover for your hot date (dinner and a show) with her in that evening. You get a day's worth of uninterrupted wrenching. Priceless. .. prolly get layed too.


 
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Old Sep 12, 2014 | 05:18 PM
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Originally Posted by OldFord72
Thanks for the help! Problem was freeze plugs leaking back to the dust cover.
OldFord72

Those FE freeze plugs or "core plugs" should be 1 49/64" diameter. Frequently a 1 3/4" plug will be substituted but they can sometimes pop out. Dorman makes a 1 49/64" plug set sold at O"Reilly's for a bout $9.99. I can provide a part number for the kit if needed but need to get home and lay eyes on it first. It's been long enough I can't possibly remember it at this point....
 
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