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Unread 09-18-2011, 11:04 AM   #16
IrishCJ6
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1975 CJ6 
 
Join Date: Sep 2010
Location: Dublin
Posts: 104
Thanks guys for the responses, found the old top hose learking in the garage (with spring) and put it on and it works no more collapsed hose.

But I still have a standard bottom hose (no spring) can anyone give me the right part numbers of the top and bottom hoses (with springs) so I can get replacements.

As with being in Ireland the easiset distributor I've found is Rockauto so there parts numbers would be helpful.

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Unread 09-18-2011, 11:29 AM   #17
davbytrace
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1979 CJ7 
 
Join Date: May 2011
Location: clinton, MS
Posts: 479
Good info Jeephammer.

The voids created by the cavitation of an impeller are created by the low pressure on the backside of the impeller blade. The low pressure forces water to convert automatically from liquid to a gas, but it does not introduce air into the system because the pressure in the system and the (relatively) low temperature. It creates steam.

Since the water is at a near boiling point it only takes a little bit of negative pressure for the vapor pressure in the water molecules to exceed the system pressure. That negative pressure is created on the back side of the impeller. This creates little steam voids.

The steam voids collapse immediately on the other side of the impeller because the steam void is not created by heating (like a pot on a stove), it is created by negative pressure.
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Unread 09-18-2011, 02:25 PM   #18
bentring
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1976 CJ5 
 
Join Date: Sep 2011
Location: , Jackson TN
Posts: 229
I needed a new top radiator hose and two different places listed it as one that wasn't going to fit so I just decided my setup wasn't stock and bought a flex hose. Problem solved.
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Unread 09-18-2011, 03:06 PM   #19
80cj
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1980 CJ5 
 
Join Date: May 2002
Location: Hawaii
Posts: 5,805
Could it be possible that you have a water pump designed for a serpentine setup and it's turning the wrong way? Nah, impossible! Just a far fetched thought.
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Unread 09-18-2011, 06:18 PM   #20
John Strenk
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1976 CJ5 
 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 13,007
Not with the V8. They didn't have viper belts.
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