overheating

[63gal427]

The bottom hose has to have the wire in it or otherwise it can collapse and not let coolant through it.

[FirstEliminator]

Sounds like the winning solution here is to take that wire from the top hose and put it in the bottom hose....if it fits properly. Or, get the correct diameter spring for the bottom hose. The top hose has pressure, so there is no need to have a spring for support in there. The bottom hose is the suction side and can vacuum the hose down until it pinches itself off. Especially when it's hot and the rubber is soft. What psi is your radiator cap and does it seal properly?

[fryedaddy]

i think you may be right,i had a flex hose on the bottom with my old engine.when i put my new 428 in,i put new hoses on.i bought a stock hose for the bottom,and i had to get a flex hose for the top because i had problems finding one local.my new high flow alu. water pump may add to the problem.it may be sucking that bottom hose flat.im going to get my car out and get it up to temp,run it hard a time or two.if it starts getting hot i can jump out and check the bottom hose while revving the engine and see what happens.if this cures it thanks for all the ideas,i might have never figured it out.my memory is not the greatest these days but it seems like i barely remember that might be why i had that flex hose on the bottom of that other motor.

[machoneman]

I'd shade tree it first although I've run this trick for years in some old beaters. 

Take a bat handle or other round object and wrap a steel coat hanger around it (or similar stiff wire) to get the shape right. Bend in the two ends so they don't cut into the lower hose. Slip same into the hose and tighten it up. If this works, yes your lower hose is collapsing and blocking flow. Leave it as is or later get a proper wire- reinforced lower hose.   

[fryedaddy]

I'd shade tree it first although I've run this trick for years in some old beaters. 

Take a bat handle or other round object and wrap a steel coat hanger around it (or similalt stiff wire) to get the shape right. Bend in the two ends so they don't cut into the lower hose. Slip same into the hose and tighten it up. If this works, yes your lower hose is collapsing and blocking flow. Leave it as is or later get a proper wire- reinforced lower hose.

thank you ,i was trying to figure out how to fix it for now without spending any money. now lets see if my wife will let me have a coat hanger

[fryedaddy]

i gutted out my stat and added a shroud.it runs 170-180 now.thanks for all the info.i wish i had all this good info back in the 70s and 80s when i first started running FEs

[fryedaddy]

 my bottom hose was sucking shut.i went for a ride and then i started it up about a half hour later.i had the hood up and hit the gas and noticed something out the corner of my eye.it was the bottom hose sucking flat every time i revved it up. i added some stiff wire that i had twisted around a wooden handle.it should be fine now. thanks for the ideas everyone

[machoneman]

Great! Glad to hear that shade tree engineering stills works in 2016! Hurray!