new bottom radiator hose leaking

[JSeery]

This sounds like a clamp or hose issue if tightening the clamp makes it worse. All of this is a bit strange, I have almost never had a hose leak. Be interesting to see what the issue is when you get it figured out.

[rockfla]

I have two new clamps I got from Mike at Third Gen I think I will replace and see what happens.

[Clem Clement]

I'm using original clamps

[glennpm]

I like to use "Constant Torque" hose clamps. they are smooth all around the ID and with Belleville spring washers, adjust to cold to hot temperatures.


https://www.mcmaster.com/constant-torque-hose-clamps

[aussie merc]

curiosity question the necks are still round? if they are out of round youve got buckleys of getting then to seal ive found that a small tailpipe expander great for rerounding rad necks but gently does it you only want to reshape not expand

[Clem Clement]

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Hose fixed and in static test. Hoped to drop the truck today but cooked 2 wire and it is fixing wire time..

Great help folks thanks.
Found: I'm using used and cleaned hose clamps. Found one was a size A15, not the A12 In that I needed. On the heater hose lines, found that clamp's pinch closed completely as clamps were wrong size.

Also I had to open the rad. hose clamps to get them over the installed hose.
when tightening the clamp the nut comes down the bolt threads and stopped outside the holding nut arm. Thus when nut spins an stops secure. This was hard to see with the 2 horns I have installed under the radiator.

[JSeery]

Not sure I understand the issue other than the hose clamps were the wrong size and/or not working. That would sure do it in the won't seal department!

[19Fordy]

Try using 2 clamps at each end of hose. I also use Permatex non hardening sealer.

[rockfla]

I solved my issue. First.....on one side the Indian Head didn't seem like it was "thick" enough and didn't adhere like it should in combination with the "old" hose clamp. The other side adhered 3/4 of the way around with the "old" hose clamp. I pulled them both off, cleaned the neck of the head and insided the hose, then I scotch brite the neck of the heads (even though they were fresh from the machine shop from the start) and THEN cleaned them with acetone. I took a knife and scraped the inside of the hose clean and completely smooth of "ANY" build up of rust and gunk and cleaned it with acetone. THEN re-applied the Indian Head Shellac making sure there was a "good" even coat around both the neck and the hose. Then installed with "NEW" hose clamps. Dry as a bone!!!!

[19Fordy]

X-e-lent !

[ford38v8]

Originally Posted by Clem Clement

I'm using original clamps

Original clamps worked with original soft rubber hoses. Modern hoses are harder, and require the stronger modern clamps.

[Clem Clement]

My truck has not left the garage in months. Today I noticed the hose I had trouble with looks different and the clamps are rusting. Did I damage the hose by all the squashing and bending I did?

[wga]

Celm - take that truck out and drive it.

[nickthebandit]

A & L Parts Specialties, 1- 860-693-0112, or 1-860-693-2620

[russcc]

A &L is in CT. Good reputation. Model A supplier.